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.DS_Store
node_modules/
dist/
build/
coverage/
.cache/
.turbo/
*.log
*.tmp
*.swp
*.swo
.claude/
.idea/
.vscode/

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# Restored Claude Code Source
![Preview](preview.png)
This repository is a restored Claude Code source tree reconstructed primarily from source maps and missing-module backfilling.
It is not the original upstream repository state. Some files were unrecoverable from source maps and have been replaced with compatibility shims or degraded implementations so the
project can install and run again.
## Current status
- The source tree is restorable and runnable in a local development workflow.
- `bun install` succeeds.
- `bun run version` succeeds.
- `bun run dev` starts the restored CLI entrypoint and remains running as an interactive process.
- A number of modules still contain restoration-time fallbacks, so behavior may differ from the original Claude Code implementation.
## Why this exists
Source maps do not contain a full original repository:
- type-only files are often missing
- build-time generated files may be absent
- private package wrappers and native bindings may not be recoverable
- dynamic imports and resource files are frequently incomplete
This repository fills those gaps enough to produce a usable, runnable restored workspace.
## Run
Requirements:
- Bun 1.3.5 or newer
- Node.js 24 or newer
Install dependencies:
```bash
bun install
Run the restored CLI:
bun run dev
Print the restored version:
bun run version

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"cliui/wrap-ansi/ansi-styles": ["ansi-styles@4.3.0", "https://mirrors.cloud.tencent.com/npm/ansi-styles/-/ansi-styles-4.3.0.tgz", { "dependencies": { "color-convert": "^2.0.1" } }, "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg=="],
"form-data/mime-types/mime-db": ["mime-db@1.52.0", "https://mirrors.cloud.tencent.com/npm/mime-db/-/mime-db-1.52.0.tgz", {}, "sha512-sPU4uV7dYlvtWJxwwxHD0PuihVNiE7TyAbQ5SWxDCB9mUYvOgroQOwYQQOKPJ8CIbE+1ETVlOoK1UC2nU3gYvg=="],
"gaxios/https-proxy-agent/agent-base": ["agent-base@7.1.4", "https://mirrors.cloud.tencent.com/npm/agent-base/-/agent-base-7.1.4.tgz", {}, "sha512-MnA+YT8fwfJPgBx3m60MNqakm30XOkyIoH1y6huTQvC0PwZG7ki8NacLBcrPbNoo8vEZy7Jpuk7+jMO+CUovTQ=="],
"ink/wrap-ansi/string-width": ["string-width@7.2.0", "https://mirrors.cloud.tencent.com/npm/string-width/-/string-width-7.2.0.tgz", { "dependencies": { "emoji-regex": "^10.3.0", "get-east-asian-width": "^1.0.0", "strip-ansi": "^7.1.0" } }, "sha512-tsaTIkKW9b4N+AEj+SVA+WhJzV7/zMhcSu78mLKWSk7cXMOSHsBKFWUs0fWwq8QyK3MgJBQRX6Gbi4kYbdvGkQ=="],
"yargs/string-width/emoji-regex": ["emoji-regex@8.0.0", "https://mirrors.cloud.tencent.com/npm/emoji-regex/-/emoji-regex-8.0.0.tgz", {}, "sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A=="],
"yargs/string-width/is-fullwidth-code-point": ["is-fullwidth-code-point@3.0.0", "https://mirrors.cloud.tencent.com/npm/is-fullwidth-code-point/-/is-fullwidth-code-point-3.0.0.tgz", {}, "sha512-zymm5+u+sCsSWyD9qNaejV3DFvhCKclKdizYaJUuHA83RLjb7nSuGnddCHGv0hk+KY7BMAlsWeK4Ueg6EV6XQg=="],
"yargs/string-width/strip-ansi": ["strip-ansi@6.0.1", "https://mirrors.cloud.tencent.com/npm/strip-ansi/-/strip-ansi-6.0.1.tgz", { "dependencies": { "ansi-regex": "^5.0.1" } }, "sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A=="],
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}
}

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{
"name": "@anthropic-ai/claude-code",
"version": "999.0.0-restored",
"private": true,
"description": "Restored Claude Code source tree reconstructed from source maps.",
"license": "SEE LICENSE IN LICENSE.md",
"type": "module",
"packageManager": "bun@1.3.5",
"repository": {
"type": "git",
"url": "https://github.com/anthropics/claude-code.git"
},
"engines": {
"bun": ">=1.3.5",
"node": ">=24.0.0"
},
"scripts": {
"dev": "bun run ./src/dev-entry.ts",
"start": "bun run ./src/dev-entry.ts",
"version": "bun run ./src/dev-entry.ts --version"
},
"dependencies": {
"@alcalzone/ansi-tokenize": "*",
"@ant/claude-for-chrome-mcp": "file:./shims/ant-claude-for-chrome-mcp",
"@ant/computer-use-input": "file:./shims/ant-computer-use-input",
"@ant/computer-use-mcp": "file:./shims/ant-computer-use-mcp",
"@ant/computer-use-swift": "file:./shims/ant-computer-use-swift",
"@anthropic-ai/claude-agent-sdk": "*",
"@anthropic-ai/mcpb": "*",
"@anthropic-ai/sandbox-runtime": "*",
"@anthropic-ai/sdk": "*",
"@aws-sdk/client-bedrock-runtime": "*",
"@commander-js/extra-typings": "*",
"@growthbook/growthbook": "*",
"@modelcontextprotocol/sdk": "*",
"@opentelemetry/api": "*",
"@opentelemetry/api-logs": "*",
"@opentelemetry/core": "*",
"@opentelemetry/resources": "*",
"@opentelemetry/sdk-logs": "*",
"@opentelemetry/sdk-metrics": "*",
"@opentelemetry/sdk-trace-base": "*",
"@opentelemetry/semantic-conventions": "*",
"ajv": "*",
"asciichart": "*",
"auto-bind": "*",
"axios": "*",
"bidi-js": "*",
"chalk": "*",
"chokidar": "*",
"cli-boxes": "*",
"code-excerpt": "*",
"diff": "*",
"emoji-regex": "*",
"env-paths": "*",
"execa": "*",
"figures": "*",
"fuse.js": "*",
"get-east-asian-width": "*",
"google-auth-library": "*",
"highlight.js": "*",
"https-proxy-agent": "*",
"ignore": "*",
"indent-string": "*",
"ink": "*",
"jsonc-parser": "*",
"lodash-es": "*",
"lru-cache": "*",
"marked": "*",
"p-map": "*",
"picomatch": "*",
"proper-lockfile": "*",
"qrcode": "*",
"react": "*",
"react-reconciler": "*",
"semver": "*",
"shell-quote": "*",
"signal-exit": "*",
"stack-utils": "*",
"strip-ansi": "*",
"supports-hyperlinks": "*",
"tree-kill": "*",
"type-fest": "*",
"undici": "*",
"usehooks-ts": "*",
"vscode-jsonrpc": "*",
"vscode-languageserver-protocol": "*",
"vscode-languageserver-types": "*",
"wrap-ansi": "*",
"ws": "*",
"xss": "*",
"yaml": "*",
"zod": "*",
"color-diff-napi": "file:./shims/color-diff-napi",
"modifiers-napi": "file:./shims/modifiers-napi",
"url-handler-napi": "file:./shims/url-handler-napi"
}
}

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export type PermissionMode =
| 'ask'
| 'skip_all_permission_checks'
| 'follow_a_plan'
export type Logger = {
info(message: string): void
warn(message: string): void
error(message: string): void
}
export type ClaudeForChromeContext = {
serverName?: string
logger?: Logger
}
export const BROWSER_TOOLS: Array<{ name: string }> = []
export function createClaudeForChromeMcpServer(_context: ClaudeForChromeContext) {
return {
async connect() {},
setRequestHandler() {},
async close() {},
}
}

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{
"name": "@ant/claude-for-chrome-mcp",
"version": "0.0.0-restored",
"type": "module",
"main": "./index.ts"
}

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export type ComputerUseInputAPI = {
moveMouse(x: number, y: number, smooth?: boolean): Promise<void>
mouseLocation(): Promise<{ x: number; y: number }>
key(key: string, action?: 'press' | 'release' | 'click'): Promise<void>
keys(keys: string[]): Promise<void>
leftClick(): Promise<void>
rightClick(): Promise<void>
doubleClick(): Promise<void>
middleClick(): Promise<void>
dragMouse(x: number, y: number): Promise<void>
scroll(x: number, y: number): Promise<void>
type(text: string): Promise<void>
}
export type ComputerUseInput =
| ({ isSupported: false } & Partial<ComputerUseInputAPI>)
| ({ isSupported: true } & ComputerUseInputAPI)
const unsupported: ComputerUseInput = {
isSupported: false,
}
export default unsupported

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{
"name": "@ant/computer-use-input",
"version": "0.0.0-restored",
"type": "module",
"main": "./index.ts"
}

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export const DEFAULT_GRANT_FLAGS = {
accessibility: false,
screenRecording: false,
}
export const API_RESIZE_PARAMS = {}
export function targetImageSize(width: number, height: number) {
return [width, height] as const
}
export function buildComputerUseTools() {
return [] as Array<{ name: string }>
}
export function createComputerUseMcpServer() {
return {
async connect() {},
setRequestHandler() {},
async close() {},
}
}
export function bindSessionContext() {
return async () => ({
is_error: true,
content: [
{
type: 'text',
text: 'Computer use is unavailable in the restored development build.',
},
],
})
}
export type DisplayGeometry = Record<string, unknown>
export type FrontmostApp = Record<string, unknown>
export type InstalledApp = { name?: string; bundleId?: string }
export type ResolvePrepareCaptureResult = Record<string, unknown>
export type RunningApp = Record<string, unknown>
export type ScreenshotResult = Record<string, unknown>
export type ScreenshotDims = {
width: number
height: number
displayWidth?: number
displayHeight?: number
displayId?: number
originX?: number
originY?: number
}
export type CuPermissionRequest = Record<string, unknown>
export type CuPermissionResponse = Record<string, unknown>
export type CuCallToolResult = {
is_error?: boolean
content?: Array<{ type: string; text?: string }>
telemetry?: Record<string, unknown>
}
export type ComputerUseSessionContext = Record<string, unknown>
export type ComputerExecutor = Record<string, unknown>

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{
"name": "@ant/computer-use-mcp",
"version": "0.0.0-restored",
"type": "module",
"main": "./index.ts",
"exports": {
".": "./index.ts",
"./types": "./types.ts",
"./sentinelApps": "./sentinelApps.ts"
}
}

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export function getSentinelCategory() {
return null
}

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export const DEFAULT_GRANT_FLAGS = {
accessibility: false,
screenRecording: false,
}
export type CoordinateMode = 'screen' | 'viewport'
export type CuSubGates = Record<string, boolean>
export type Logger = {
info(message: string): void
warn(message: string): void
error(message: string): void
}
export type ComputerUseHostAdapter = Record<string, unknown>
export type CuPermissionRequest = Record<string, unknown>
export type CuPermissionResponse = Record<string, unknown>

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export type ComputerUseAPI = {
screens?: {
list(): Promise<unknown[]>
}
apps?: {
listInstalled(): Promise<unknown[]>
listRunning(): Promise<unknown[]>
}
}
const stub: ComputerUseAPI = {
screens: {
async list() {
return []
},
},
apps: {
async listInstalled() {
return []
},
async listRunning() {
return []
},
},
}
export default stub

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{
"name": "@ant/computer-use-swift",
"version": "0.0.0-restored",
"type": "module",
"main": "./index.ts"
}

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export {
ColorDiff,
ColorFile,
getSyntaxTheme,
getNativeModule,
} from '../../src/native-ts/color-diff/index.ts'
export type {
ColorDiffClass,
ColorFileClass,
Hunk,
SyntaxTheme,
} from '../../src/native-ts/color-diff/index.ts'

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{
"name": "color-diff-napi",
"version": "0.0.0-restored",
"type": "module",
"main": "./index.ts"
}

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export {
getModifiers,
isModifierPressed,
prewarm,
} from '../../vendor/modifiers-napi-src/index.ts'

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{
"name": "modifiers-napi",
"version": "0.0.0-restored",
"type": "module",
"main": "./index.ts"
}

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export { waitForUrlEvent } from '../../vendor/url-handler-src/index.ts'

6
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{
"name": "url-handler-napi",
"version": "0.0.0-restored",
"type": "module",
"main": "./index.ts"
}

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import { randomBytes } from 'crypto'
import type { AppState } from './state/AppState.js'
import type { AgentId } from './types/ids.js'
import { getTaskOutputPath } from './utils/task/diskOutput.js'
export type TaskType =
| 'local_bash'
| 'local_agent'
| 'remote_agent'
| 'in_process_teammate'
| 'local_workflow'
| 'monitor_mcp'
| 'dream'
export type TaskStatus =
| 'pending'
| 'running'
| 'completed'
| 'failed'
| 'killed'
/**
* True when a task is in a terminal state and will not transition further.
* Used to guard against injecting messages into dead teammates, evicting
* finished tasks from AppState, and orphan-cleanup paths.
*/
export function isTerminalTaskStatus(status: TaskStatus): boolean {
return status === 'completed' || status === 'failed' || status === 'killed'
}
export type TaskHandle = {
taskId: string
cleanup?: () => void
}
export type SetAppState = (f: (prev: AppState) => AppState) => void
export type TaskContext = {
abortController: AbortController
getAppState: () => AppState
setAppState: SetAppState
}
// Base fields shared by all task states
export type TaskStateBase = {
id: string
type: TaskType
status: TaskStatus
description: string
toolUseId?: string
startTime: number
endTime?: number
totalPausedMs?: number
outputFile: string
outputOffset: number
notified: boolean
}
export type LocalShellSpawnInput = {
command: string
description: string
timeout?: number
toolUseId?: string
agentId?: AgentId
/** UI display variant: description-as-label, dialog title, status bar pill. */
kind?: 'bash' | 'monitor'
}
// What getTaskByType dispatches for: kill. spawn/render were never
// called polymorphically (removed in #22546). All six kill implementations
// use only setAppState — getAppState/abortController were dead weight.
export type Task = {
name: string
type: TaskType
kill(taskId: string, setAppState: SetAppState): Promise<void>
}
// Task ID prefixes
const TASK_ID_PREFIXES: Record<string, string> = {
local_bash: 'b', // Keep as 'b' for backward compatibility
local_agent: 'a',
remote_agent: 'r',
in_process_teammate: 't',
local_workflow: 'w',
monitor_mcp: 'm',
dream: 'd',
}
// Get task ID prefix
function getTaskIdPrefix(type: TaskType): string {
return TASK_ID_PREFIXES[type] ?? 'x'
}
// Case-insensitive-safe alphabet (digits + lowercase) for task IDs.
// 36^8 ≈ 2.8 trillion combinations, sufficient to resist brute-force symlink attacks.
const TASK_ID_ALPHABET = '0123456789abcdefghijklmnopqrstuvwxyz'
export function generateTaskId(type: TaskType): string {
const prefix = getTaskIdPrefix(type)
const bytes = randomBytes(8)
let id = prefix
for (let i = 0; i < 8; i++) {
id += TASK_ID_ALPHABET[bytes[i]! % TASK_ID_ALPHABET.length]
}
return id
}
export function createTaskStateBase(
id: string,
type: TaskType,
description: string,
toolUseId?: string,
): TaskStateBase {
return {
id,
type,
status: 'pending',
description,
toolUseId,
startTime: Date.now(),
outputFile: getTaskOutputPath(id),
outputOffset: 0,
notified: false,
}
}

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import type {
ToolResultBlockParam,
ToolUseBlockParam,
} from '@anthropic-ai/sdk/resources/index.mjs'
import type {
ElicitRequestURLParams,
ElicitResult,
} from '@modelcontextprotocol/sdk/types.js'
import type { UUID } from 'crypto'
import type { z } from 'zod/v4'
import type { Command } from './commands.js'
import type { CanUseToolFn } from './hooks/useCanUseTool.js'
import type { ThinkingConfig } from './utils/thinking.js'
export type ToolInputJSONSchema = {
[x: string]: unknown
type: 'object'
properties?: {
[x: string]: unknown
}
}
import type { Notification } from './context/notifications.js'
import type {
MCPServerConnection,
ServerResource,
} from './services/mcp/types.js'
import type {
AgentDefinition,
AgentDefinitionsResult,
} from './tools/AgentTool/loadAgentsDir.js'
import type {
AssistantMessage,
AttachmentMessage,
Message,
ProgressMessage,
SystemLocalCommandMessage,
SystemMessage,
UserMessage,
} from './types/message.js'
// Import permission types from centralized location to break import cycles
// Import PermissionResult from centralized location to break import cycles
import type {
AdditionalWorkingDirectory,
PermissionMode,
PermissionResult,
} from './types/permissions.js'
// Import tool progress types from centralized location to break import cycles
import type {
AgentToolProgress,
BashProgress,
MCPProgress,
REPLToolProgress,
SkillToolProgress,
TaskOutputProgress,
ToolProgressData,
WebSearchProgress,
} from './types/tools.js'
import type { FileStateCache } from './utils/fileStateCache.js'
import type { DenialTrackingState } from './utils/permissions/denialTracking.js'
import type { SystemPrompt } from './utils/systemPromptType.js'
import type { ContentReplacementState } from './utils/toolResultStorage.js'
// Re-export progress types for backwards compatibility
export type {
AgentToolProgress,
BashProgress,
MCPProgress,
REPLToolProgress,
SkillToolProgress,
TaskOutputProgress,
WebSearchProgress,
}
import type { SpinnerMode } from './components/Spinner.js'
import type { QuerySource } from './constants/querySource.js'
import type { SDKStatus } from './entrypoints/agentSdkTypes.js'
import type { AppState } from './state/AppState.js'
import type {
HookProgress,
PromptRequest,
PromptResponse,
} from './types/hooks.js'
import type { AgentId } from './types/ids.js'
import type { DeepImmutable } from './types/utils.js'
import type { AttributionState } from './utils/commitAttribution.js'
import type { FileHistoryState } from './utils/fileHistory.js'
import type { Theme, ThemeName } from './utils/theme.js'
export type QueryChainTracking = {
chainId: string
depth: number
}
export type ValidationResult =
| { result: true }
| {
result: false
message: string
errorCode: number
}
export type SetToolJSXFn = (
args: {
jsx: React.ReactNode | null
shouldHidePromptInput: boolean
shouldContinueAnimation?: true
showSpinner?: boolean
isLocalJSXCommand?: boolean
isImmediate?: boolean
/** Set to true to clear a local JSX command (e.g., from its onDone callback) */
clearLocalJSX?: boolean
} | null,
) => void
// Import tool permission types from centralized location to break import cycles
import type { ToolPermissionRulesBySource } from './types/permissions.js'
// Re-export for backwards compatibility
export type { ToolPermissionRulesBySource }
// Apply DeepImmutable to the imported type
export type ToolPermissionContext = DeepImmutable<{
mode: PermissionMode
additionalWorkingDirectories: Map<string, AdditionalWorkingDirectory>
alwaysAllowRules: ToolPermissionRulesBySource
alwaysDenyRules: ToolPermissionRulesBySource
alwaysAskRules: ToolPermissionRulesBySource
isBypassPermissionsModeAvailable: boolean
isAutoModeAvailable?: boolean
strippedDangerousRules?: ToolPermissionRulesBySource
/** When true, permission prompts are auto-denied (e.g., background agents that can't show UI) */
shouldAvoidPermissionPrompts?: boolean
/** When true, automated checks (classifier, hooks) are awaited before showing the permission dialog (coordinator workers) */
awaitAutomatedChecksBeforeDialog?: boolean
/** Stores the permission mode before model-initiated plan mode entry, so it can be restored on exit */
prePlanMode?: PermissionMode
}>
export const getEmptyToolPermissionContext: () => ToolPermissionContext =
() => ({
mode: 'default',
additionalWorkingDirectories: new Map(),
alwaysAllowRules: {},
alwaysDenyRules: {},
alwaysAskRules: {},
isBypassPermissionsModeAvailable: false,
})
export type CompactProgressEvent =
| {
type: 'hooks_start'
hookType: 'pre_compact' | 'post_compact' | 'session_start'
}
| { type: 'compact_start' }
| { type: 'compact_end' }
export type ToolUseContext = {
options: {
commands: Command[]
debug: boolean
mainLoopModel: string
tools: Tools
verbose: boolean
thinkingConfig: ThinkingConfig
mcpClients: MCPServerConnection[]
mcpResources: Record<string, ServerResource[]>
isNonInteractiveSession: boolean
agentDefinitions: AgentDefinitionsResult
maxBudgetUsd?: number
/** Custom system prompt that replaces the default system prompt */
customSystemPrompt?: string
/** Additional system prompt appended after the main system prompt */
appendSystemPrompt?: string
/** Override querySource for analytics tracking */
querySource?: QuerySource
/** Optional callback to get the latest tools (e.g., after MCP servers connect mid-query) */
refreshTools?: () => Tools
}
abortController: AbortController
readFileState: FileStateCache
getAppState(): AppState
setAppState(f: (prev: AppState) => AppState): void
/**
* Always-shared setAppState for session-scoped infrastructure (background
* tasks, session hooks). Unlike setAppState, which is no-op for async agents
* (see createSubagentContext), this always reaches the root store so agents
* at any nesting depth can register/clean up infrastructure that outlives
* a single turn. Only set by createSubagentContext; main-thread contexts
* fall back to setAppState.
*/
setAppStateForTasks?: (f: (prev: AppState) => AppState) => void
/**
* Optional handler for URL elicitations triggered by tool call errors (-32042).
* In print/SDK mode, this delegates to structuredIO.handleElicitation.
* In REPL mode, this is undefined and the queue-based UI path is used.
*/
handleElicitation?: (
serverName: string,
params: ElicitRequestURLParams,
signal: AbortSignal,
) => Promise<ElicitResult>
setToolJSX?: SetToolJSXFn
addNotification?: (notif: Notification) => void
/** Append a UI-only system message to the REPL message list. Stripped at the
* normalizeMessagesForAPI boundary — the Exclude<> makes that type-enforced. */
appendSystemMessage?: (
msg: Exclude<SystemMessage, SystemLocalCommandMessage>,
) => void
/** Send an OS-level notification (iTerm2, Kitty, Ghostty, bell, etc.) */
sendOSNotification?: (opts: {
message: string
notificationType: string
}) => void
nestedMemoryAttachmentTriggers?: Set<string>
/**
* CLAUDE.md paths already injected as nested_memory attachments this
* session. Dedup for memoryFilesToAttachments — readFileState is an LRU
* that evicts entries in busy sessions, so its .has() check alone can
* re-inject the same CLAUDE.md dozens of times.
*/
loadedNestedMemoryPaths?: Set<string>
dynamicSkillDirTriggers?: Set<string>
/** Skill names surfaced via skill_discovery this session. Telemetry only (feeds was_discovered). */
discoveredSkillNames?: Set<string>
userModified?: boolean
setInProgressToolUseIDs: (f: (prev: Set<string>) => Set<string>) => void
/** Only wired in interactive (REPL) contexts; SDK/QueryEngine don't set this. */
setHasInterruptibleToolInProgress?: (v: boolean) => void
setResponseLength: (f: (prev: number) => number) => void
/** Ant-only: push a new API metrics entry for OTPS tracking.
* Called by subagent streaming when a new API request starts. */
pushApiMetricsEntry?: (ttftMs: number) => void
setStreamMode?: (mode: SpinnerMode) => void
onCompactProgress?: (event: CompactProgressEvent) => void
setSDKStatus?: (status: SDKStatus) => void
openMessageSelector?: () => void
updateFileHistoryState: (
updater: (prev: FileHistoryState) => FileHistoryState,
) => void
updateAttributionState: (
updater: (prev: AttributionState) => AttributionState,
) => void
setConversationId?: (id: UUID) => void
agentId?: AgentId // Only set for subagents; use getSessionId() for session ID. Hooks use this to distinguish subagent calls.
agentType?: string // Subagent type name. For the main thread's --agent type, hooks fall back to getMainThreadAgentType().
/** When true, canUseTool must always be called even when hooks auto-approve.
* Used by speculation for overlay file path rewriting. */
requireCanUseTool?: boolean
messages: Message[]
fileReadingLimits?: {
maxTokens?: number
maxSizeBytes?: number
}
globLimits?: {
maxResults?: number
}
toolDecisions?: Map<
string,
{
source: string
decision: 'accept' | 'reject'
timestamp: number
}
>
queryTracking?: QueryChainTracking
/** Callback factory for requesting interactive prompts from the user.
* Returns a prompt callback bound to the given source name.
* Only available in interactive (REPL) contexts. */
requestPrompt?: (
sourceName: string,
toolInputSummary?: string | null,
) => (request: PromptRequest) => Promise<PromptResponse>
toolUseId?: string
criticalSystemReminder_EXPERIMENTAL?: string
/** When true, preserve toolUseResult on messages even for subagents.
* Used by in-process teammates whose transcripts are viewable by the user. */
preserveToolUseResults?: boolean
/** Local denial tracking state for async subagents whose setAppState is a
* no-op. Without this, the denial counter never accumulates and the
* fallback-to-prompting threshold is never reached. Mutable — the
* permissions code updates it in place. */
localDenialTracking?: DenialTrackingState
/**
* Per-conversation-thread content replacement state for the tool result
* budget. When present, query.ts applies the aggregate tool result budget.
* Main thread: REPL provisions once (never resets — stale UUID keys
* are inert). Subagents: createSubagentContext clones the parent's state
* by default (cache-sharing forks need identical decisions), or
* resumeAgentBackground threads one reconstructed from sidechain records.
*/
contentReplacementState?: ContentReplacementState
/**
* Parent's rendered system prompt bytes, frozen at turn start.
* Used by fork subagents to share the parent's prompt cache — re-calling
* getSystemPrompt() at fork-spawn time can diverge (GrowthBook cold→warm)
* and bust the cache. See forkSubagent.ts.
*/
renderedSystemPrompt?: SystemPrompt
}
// Re-export ToolProgressData from centralized location
export type { ToolProgressData }
export type Progress = ToolProgressData | HookProgress
export type ToolProgress<P extends ToolProgressData> = {
toolUseID: string
data: P
}
export function filterToolProgressMessages(
progressMessagesForMessage: ProgressMessage[],
): ProgressMessage<ToolProgressData>[] {
return progressMessagesForMessage.filter(
(msg): msg is ProgressMessage<ToolProgressData> =>
msg.data?.type !== 'hook_progress',
)
}
export type ToolResult<T> = {
data: T
newMessages?: (
| UserMessage
| AssistantMessage
| AttachmentMessage
| SystemMessage
)[]
// contextModifier is only honored for tools that aren't concurrency safe.
contextModifier?: (context: ToolUseContext) => ToolUseContext
/** MCP protocol metadata (structuredContent, _meta) to pass through to SDK consumers */
mcpMeta?: {
_meta?: Record<string, unknown>
structuredContent?: Record<string, unknown>
}
}
export type ToolCallProgress<P extends ToolProgressData = ToolProgressData> = (
progress: ToolProgress<P>,
) => void
// Type for any schema that outputs an object with string keys
export type AnyObject = z.ZodType<{ [key: string]: unknown }>
/**
* Checks if a tool matches the given name (primary name or alias).
*/
export function toolMatchesName(
tool: { name: string; aliases?: string[] },
name: string,
): boolean {
return tool.name === name || (tool.aliases?.includes(name) ?? false)
}
/**
* Finds a tool by name or alias from a list of tools.
*/
export function findToolByName(tools: Tools, name: string): Tool | undefined {
return tools.find(t => toolMatchesName(t, name))
}
export type Tool<
Input extends AnyObject = AnyObject,
Output = unknown,
P extends ToolProgressData = ToolProgressData,
> = {
/**
* Optional aliases for backwards compatibility when a tool is renamed.
* The tool can be looked up by any of these names in addition to its primary name.
*/
aliases?: string[]
/**
* One-line capability phrase used by ToolSearch for keyword matching.
* Helps the model find this tool via keyword search when it's deferred.
* 3–10 words, no trailing period.
* Prefer terms not already in the tool name (e.g. 'jupyter' for NotebookEdit).
*/
searchHint?: string
call(
args: z.infer<Input>,
context: ToolUseContext,
canUseTool: CanUseToolFn,
parentMessage: AssistantMessage,
onProgress?: ToolCallProgress<P>,
): Promise<ToolResult<Output>>
description(
input: z.infer<Input>,
options: {
isNonInteractiveSession: boolean
toolPermissionContext: ToolPermissionContext
tools: Tools
},
): Promise<string>
readonly inputSchema: Input
// Type for MCP tools that can specify their input schema directly in JSON Schema format
// rather than converting from Zod schema
readonly inputJSONSchema?: ToolInputJSONSchema
// Optional because TungstenTool doesn't define this. TODO: Make it required.
// When we do that, we can also go through and make this a bit more type-safe.
outputSchema?: z.ZodType<unknown>
inputsEquivalent?(a: z.infer<Input>, b: z.infer<Input>): boolean
isConcurrencySafe(input: z.infer<Input>): boolean
isEnabled(): boolean
isReadOnly(input: z.infer<Input>): boolean
/** Defaults to false. Only set when the tool performs irreversible operations (delete, overwrite, send). */
isDestructive?(input: z.infer<Input>): boolean
/**
* What should happen when the user submits a new message while this tool
* is running.
*
* - `'cancel'` — stop the tool and discard its result
* - `'block'` — keep running; the new message waits
*
* Defaults to `'block'` when not implemented.
*/
interruptBehavior?(): 'cancel' | 'block'
/**
* Returns information about whether this tool use is a search or read operation
* that should be collapsed into a condensed display in the UI. Examples include
* file searching (Grep, Glob), file reading (Read), and bash commands like find,
* grep, wc, etc.
*
* Returns an object indicating whether the operation is a search or read operation:
* - `isSearch: true` for search operations (grep, find, glob patterns)
* - `isRead: true` for read operations (cat, head, tail, file read)
* - `isList: true` for directory-listing operations (ls, tree, du)
* - All can be false if the operation shouldn't be collapsed
*/
isSearchOrReadCommand?(input: z.infer<Input>): {
isSearch: boolean
isRead: boolean
isList?: boolean
}
isOpenWorld?(input: z.infer<Input>): boolean
requiresUserInteraction?(): boolean
isMcp?: boolean
isLsp?: boolean
/**
* When true, this tool is deferred (sent with defer_loading: true) and requires
* ToolSearch to be used before it can be called.
*/
readonly shouldDefer?: boolean
/**
* When true, this tool is never deferred — its full schema appears in the
* initial prompt even when ToolSearch is enabled. For MCP tools, set via
* `_meta['anthropic/alwaysLoad']`. Use for tools the model must see on
* turn 1 without a ToolSearch round-trip.
*/
readonly alwaysLoad?: boolean
/**
* For MCP tools: the server and tool names as received from the MCP server (unnormalized).
* Present on all MCP tools regardless of whether `name` is prefixed (mcp__server__tool)
* or unprefixed (CLAUDE_AGENT_SDK_MCP_NO_PREFIX mode).
*/
mcpInfo?: { serverName: string; toolName: string }
readonly name: string
/**
* Maximum size in characters for tool result before it gets persisted to disk.
* When exceeded, the result is saved to a file and Claude receives a preview
* with the file path instead of the full content.
*
* Set to Infinity for tools whose output must never be persisted (e.g. Read,
* where persisting creates a circular Read→file→Read loop and the tool
* already self-bounds via its own limits).
*/
maxResultSizeChars: number
/**
* When true, enables strict mode for this tool, which causes the API to
* more strictly adhere to tool instructions and parameter schemas.
* Only applied when the tengu_tool_pear is enabled.
*/
readonly strict?: boolean
/**
* Called on copies of tool_use input before observers see it (SDK stream,
* transcript, canUseTool, PreToolUse/PostToolUse hooks). Mutate in place
* to add legacy/derived fields. Must be idempotent. The original API-bound
* input is never mutated (preserves prompt cache). Not re-applied when a
* hook/permission returns a fresh updatedInput — those own their shape.
*/
backfillObservableInput?(input: Record<string, unknown>): void
/**
* Determines if this tool is allowed to run with this input in the current context.
* It informs the model of why the tool use failed, and does not directly display any UI.
* @param input
* @param context
*/
validateInput?(
input: z.infer<Input>,
context: ToolUseContext,
): Promise<ValidationResult>
/**
* Determines if the user is asked for permission. Only called after validateInput() passes.
* General permission logic is in permissions.ts. This method contains tool-specific logic.
* @param input
* @param context
*/
checkPermissions(
input: z.infer<Input>,
context: ToolUseContext,
): Promise<PermissionResult>
// Optional method for tools that operate on a file path
getPath?(input: z.infer<Input>): string
/**
* Prepare a matcher for hook `if` conditions (permission-rule patterns like
* "git *" from "Bash(git *)"). Called once per hook-input pair; any
* expensive parsing happens here. Returns a closure that is called per
* hook pattern. If not implemented, only tool-name-level matching works.
*/
preparePermissionMatcher?(
input: z.infer<Input>,
): Promise<(pattern: string) => boolean>
prompt(options: {
getToolPermissionContext: () => Promise<ToolPermissionContext>
tools: Tools
agents: AgentDefinition[]
allowedAgentTypes?: string[]
}): Promise<string>
userFacingName(input: Partial<z.infer<Input>> | undefined): string
userFacingNameBackgroundColor?(
input: Partial<z.infer<Input>> | undefined,
): keyof Theme | undefined
/**
* Transparent wrappers (e.g. REPL) delegate all rendering to their progress
* handler, which emits native-looking blocks for each inner tool call.
* The wrapper itself shows nothing.
*/
isTransparentWrapper?(): boolean
/**
* Returns a short string summary of this tool use for display in compact views.
* @param input The tool input
* @returns A short string summary, or null to not display
*/
getToolUseSummary?(input: Partial<z.infer<Input>> | undefined): string | null
/**
* Returns a human-readable present-tense activity description for spinner display.
* Example: "Reading src/foo.ts", "Running bun test", "Searching for pattern"
* @param input The tool input
* @returns Activity description string, or null to fall back to tool name
*/
getActivityDescription?(
input: Partial<z.infer<Input>> | undefined,
): string | null
/**
* Returns a compact representation of this tool use for the auto-mode
* security classifier. Examples: `ls -la` for Bash, `/tmp/x: new content`
* for Edit. Return '' to skip this tool in the classifier transcript
* (e.g. tools with no security relevance). May return an object to avoid
* double-encoding when the caller JSON-wraps the value.
*/
toAutoClassifierInput(input: z.infer<Input>): unknown
mapToolResultToToolResultBlockParam(
content: Output,
toolUseID: string,
): ToolResultBlockParam
/**
* Optional. When omitted, the tool result renders nothing (same as returning
* null). Omit for tools whose results are surfaced elsewhere (e.g., TodoWrite
* updates the todo panel, not the transcript).
*/
renderToolResultMessage?(
content: Output,
progressMessagesForMessage: ProgressMessage<P>[],
options: {
style?: 'condensed'
theme: ThemeName
tools: Tools
verbose: boolean
isTranscriptMode?: boolean
isBriefOnly?: boolean
/** Original tool_use input, when available. Useful for compact result
* summaries that reference what was requested (e.g. "Sent to #foo"). */
input?: unknown
},
): React.ReactNode
/**
* Flattened text of what renderToolResultMessage shows IN TRANSCRIPT
* MODE (verbose=true, isTranscriptMode=true). For transcript search
* indexing: the index counts occurrences in this string, the highlight
* overlay scans the actual screen buffer. For count ≡ highlight, this
* must return the text that ends up visible — not the model-facing
* serialization from mapToolResultToToolResultBlockParam (which adds
* system-reminders, persisted-output wrappers).
*
* Chrome can be skipped (under-count is fine). "Found 3 files in 12ms"
* isn't worth indexing. Phantoms are not fine — text that's claimed
* here but doesn't render is a count≠highlight bug.
*
* Optional: omitted → field-name heuristic in transcriptSearch.ts.
* Drift caught by test/utils/transcriptSearch.renderFidelity.test.tsx
* which renders sample outputs and flags text that's indexed-but-not-
* rendered (phantom) or rendered-but-not-indexed (under-count warning).
*/
extractSearchText?(out: Output): string
/**
* Render the tool use message. Note that `input` is partial because we render
* the message as soon as possible, possibly before tool parameters have fully
* streamed in.
*/
renderToolUseMessage(
input: Partial<z.infer<Input>>,
options: { theme: ThemeName; verbose: boolean; commands?: Command[] },
): React.ReactNode
/**
* Returns true when the non-verbose rendering of this output is truncated
* (i.e., clicking to expand would reveal more content). Gates
* click-to-expand in fullscreen — only messages where verbose actually
* shows more get a hover/click affordance. Unset means never truncated.
*/
isResultTruncated?(output: Output): boolean
/**
* Renders an optional tag to display after the tool use message.
* Used for additional metadata like timeout, model, resume ID, etc.
* Returns null to not display anything.
*/
renderToolUseTag?(input: Partial<z.infer<Input>>): React.ReactNode
/**
* Optional. When omitted, no progress UI is shown while the tool runs.
*/
renderToolUseProgressMessage?(
progressMessagesForMessage: ProgressMessage<P>[],
options: {
tools: Tools
verbose: boolean
terminalSize?: { columns: number; rows: number }
inProgressToolCallCount?: number
isTranscriptMode?: boolean
},
): React.ReactNode
renderToolUseQueuedMessage?(): React.ReactNode
/**
* Optional. When omitted, falls back to <FallbackToolUseRejectedMessage />.
* Only define this for tools that need custom rejection UI (e.g., file edits
* that show the rejected diff).
*/
renderToolUseRejectedMessage?(
input: z.infer<Input>,
options: {
columns: number
messages: Message[]
style?: 'condensed'
theme: ThemeName
tools: Tools
verbose: boolean
progressMessagesForMessage: ProgressMessage<P>[]
isTranscriptMode?: boolean
},
): React.ReactNode
/**
* Optional. When omitted, falls back to <FallbackToolUseErrorMessage />.
* Only define this for tools that need custom error UI (e.g., search tools
* that show "File not found" instead of the raw error).
*/
renderToolUseErrorMessage?(
result: ToolResultBlockParam['content'],
options: {
progressMessagesForMessage: ProgressMessage<P>[]
tools: Tools
verbose: boolean
isTranscriptMode?: boolean
},
): React.ReactNode
/**
* Renders multiple parallel instances of this tool as a group.
* @returns React node to render, or null to fall back to individual rendering
*/
/**
* Renders multiple tool uses as a group (non-verbose mode only).
* In verbose mode, individual tool uses render at their original positions.
* @returns React node to render, or null to fall back to individual rendering
*/
renderGroupedToolUse?(
toolUses: Array<{
param: ToolUseBlockParam
isResolved: boolean
isError: boolean
isInProgress: boolean
progressMessages: ProgressMessage<P>[]
result?: {
param: ToolResultBlockParam
output: unknown
}
}>,
options: {
shouldAnimate: boolean
tools: Tools
},
): React.ReactNode | null
}
/**
* A collection of tools. Use this type instead of `Tool[]` to make it easier
* to track where tool sets are assembled, passed, and filtered across the codebase.
*/
export type Tools = readonly Tool[]
/**
* Methods that `buildTool` supplies a default for. A `ToolDef` may omit these;
* the resulting `Tool` always has them.
*/
type DefaultableToolKeys =
| 'isEnabled'
| 'isConcurrencySafe'
| 'isReadOnly'
| 'isDestructive'
| 'checkPermissions'
| 'toAutoClassifierInput'
| 'userFacingName'
/**
* Tool definition accepted by `buildTool`. Same shape as `Tool` but with the
* defaultable methods optional — `buildTool` fills them in so callers always
* see a complete `Tool`.
*/
export type ToolDef<
Input extends AnyObject = AnyObject,
Output = unknown,
P extends ToolProgressData = ToolProgressData,
> = Omit<Tool<Input, Output, P>, DefaultableToolKeys> &
Partial<Pick<Tool<Input, Output, P>, DefaultableToolKeys>>
/**
* Type-level spread mirroring `{ ...TOOL_DEFAULTS, ...def }`. For each
* defaultable key: if D provides it (required), D's type wins; if D omits
* it or has it optional (inherited from Partial<> in the constraint), the
* default fills in. All other keys come from D verbatim — preserving arity,
* optional presence, and literal types exactly as `satisfies Tool` did.
*/
type BuiltTool<D> = Omit<D, DefaultableToolKeys> & {
[K in DefaultableToolKeys]-?: K extends keyof D
? undefined extends D[K]
? ToolDefaults[K]
: D[K]
: ToolDefaults[K]
}
/**
* Build a complete `Tool` from a partial definition, filling in safe defaults
* for the commonly-stubbed methods. All tool exports should go through this so
* that defaults live in one place and callers never need `?.() ?? default`.
*
* Defaults (fail-closed where it matters):
* - `isEnabled` → `true`
* - `isConcurrencySafe` → `false` (assume not safe)
* - `isReadOnly` → `false` (assume writes)
* - `isDestructive` → `false`
* - `checkPermissions` → `{ behavior: 'allow', updatedInput }` (defer to general permission system)
* - `toAutoClassifierInput` → `''` (skip classifier — security-relevant tools must override)
* - `userFacingName` → `name`
*/
const TOOL_DEFAULTS = {
isEnabled: () => true,
isConcurrencySafe: (_input?: unknown) => false,
isReadOnly: (_input?: unknown) => false,
isDestructive: (_input?: unknown) => false,
checkPermissions: (
input: { [key: string]: unknown },
_ctx?: ToolUseContext,
): Promise<PermissionResult> =>
Promise.resolve({ behavior: 'allow', updatedInput: input }),
toAutoClassifierInput: (_input?: unknown) => '',
userFacingName: (_input?: unknown) => '',
}
// The defaults type is the ACTUAL shape of TOOL_DEFAULTS (optional params so
// both 0-arg and full-arg call sites type-check — stubs varied in arity and
// tests relied on that), not the interface's strict signatures.
type ToolDefaults = typeof TOOL_DEFAULTS
// D infers the concrete object-literal type from the call site. The
// constraint provides contextual typing for method parameters; `any` in
// constraint position is structural and never leaks into the return type.
// BuiltTool<D> mirrors runtime `{...TOOL_DEFAULTS, ...def}` at the type level.
// eslint-disable-next-line @typescript-eslint/no-explicit-any
type AnyToolDef = ToolDef<any, any, any>
export function buildTool<D extends AnyToolDef>(def: D): BuiltTool<D> {
// The runtime spread is straightforward; the `as` bridges the gap between
// the structural-any constraint and the precise BuiltTool<D> return. The
// type semantics are proven by the 0-error typecheck across all 60+ tools.
return {
...TOOL_DEFAULTS,
userFacingName: () => def.name,
...def,
} as BuiltTool<D>
}

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function readAssistantModeFlag(): boolean {
return (
process.env.CLAUDE_CODE_ASSISTANT_MODE === '1' ||
process.env.CLAUDE_CODE_ASSISTANT_MODE === 'true'
)
}
export function isAssistantMode(): boolean {
return readAssistantModeFlag()
}
export function isAssistantModeEnabled(): boolean {
return readAssistantModeFlag()
}

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export async function discoverAssistantSessions() {
return []
}

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import axios from 'axios'
import { getOauthConfig } from '../constants/oauth.js'
import type { SDKMessage } from '../entrypoints/agentSdkTypes.js'
import { logForDebugging } from '../utils/debug.js'
import { getOAuthHeaders, prepareApiRequest } from '../utils/teleport/api.js'
export const HISTORY_PAGE_SIZE = 100
export type HistoryPage = {
/** Chronological order within the page. */
events: SDKMessage[]
/** Oldest event ID in this page → before_id cursor for next-older page. */
firstId: string | null
/** true = older events exist. */
hasMore: boolean
}
type SessionEventsResponse = {
data: SDKMessage[]
has_more: boolean
first_id: string | null
last_id: string | null
}
export type HistoryAuthCtx = {
baseUrl: string
headers: Record<string, string>
}
/** Prepare auth + headers + base URL once, reuse across pages. */
export async function createHistoryAuthCtx(
sessionId: string,
): Promise<HistoryAuthCtx> {
const { accessToken, orgUUID } = await prepareApiRequest()
return {
baseUrl: `${getOauthConfig().BASE_API_URL}/v1/sessions/${sessionId}/events`,
headers: {
...getOAuthHeaders(accessToken),
'anthropic-beta': 'ccr-byoc-2025-07-29',
'x-organization-uuid': orgUUID,
},
}
}
async function fetchPage(
ctx: HistoryAuthCtx,
params: Record<string, string | number | boolean>,
label: string,
): Promise<HistoryPage | null> {
const resp = await axios
.get<SessionEventsResponse>(ctx.baseUrl, {
headers: ctx.headers,
params,
timeout: 15000,
validateStatus: () => true,
})
.catch(() => null)
if (!resp || resp.status !== 200) {
logForDebugging(`[${label}] HTTP ${resp?.status ?? 'error'}`)
return null
}
return {
events: Array.isArray(resp.data.data) ? resp.data.data : [],
firstId: resp.data.first_id,
hasMore: resp.data.has_more,
}
}
/**
* Newest page: last `limit` events, chronological, via anchor_to_latest.
* has_more=true means older events exist.
*/
export async function fetchLatestEvents(
ctx: HistoryAuthCtx,
limit = HISTORY_PAGE_SIZE,
): Promise<HistoryPage | null> {
return fetchPage(ctx, { limit, anchor_to_latest: true }, 'fetchLatestEvents')
}
/** Older page: events immediately before `beforeId` cursor. */
export async function fetchOlderEvents(
ctx: HistoryAuthCtx,
beforeId: string,
limit = HISTORY_PAGE_SIZE,
): Promise<HistoryPage | null> {
return fetchPage(ctx, { limit, before_id: beforeId }, 'fetchOlderEvents')
}

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import axios from 'axios'
import { debugBody, extractErrorDetail } from './debugUtils.js'
import {
BRIDGE_LOGIN_INSTRUCTION,
type BridgeApiClient,
type BridgeConfig,
type PermissionResponseEvent,
type WorkResponse,
} from './types.js'
type BridgeApiDeps = {
baseUrl: string
getAccessToken: () => string | undefined
runnerVersion: string
onDebug?: (msg: string) => void
/**
* Called on 401 to attempt OAuth token refresh. Returns true if refreshed,
* in which case the request is retried once. Injected because
* handleOAuth401Error from utils/auth.ts transitively pulls in config.ts →
* file.ts → permissions/filesystem.ts → sessionStorage.ts → commands.ts
* (~1300 modules). Daemon callers using env-var tokens omit this — their
* tokens don't refresh, so 401 goes straight to BridgeFatalError.
*/
onAuth401?: (staleAccessToken: string) => Promise<boolean>
/**
* Returns the trusted device token to send as X-Trusted-Device-Token on
* bridge API calls. Bridge sessions have SecurityTier=ELEVATED on the
* server (CCR v2); when the server's enforcement flag is on,
* ConnectBridgeWorker requires a trusted device at JWT-issuance.
* Optional — when absent or returning undefined, the header is omitted
* and the server falls through to its flag-off/no-op path. The CLI-side
* gate is tengu_sessions_elevated_auth_enforcement (see trustedDevice.ts).
*/
getTrustedDeviceToken?: () => string | undefined
}
const BETA_HEADER = 'environments-2025-11-01'
/** Allowlist pattern for server-provided IDs used in URL path segments. */
const SAFE_ID_PATTERN = /^[a-zA-Z0-9_-]+$/
/**
* Validate that a server-provided ID is safe to interpolate into a URL path.
* Prevents path traversal (e.g. `../../admin`) and injection via IDs that
* contain slashes, dots, or other special characters.
*/
export function validateBridgeId(id: string, label: string): string {
if (!id || !SAFE_ID_PATTERN.test(id)) {
throw new Error(`Invalid ${label}: contains unsafe characters`)
}
return id
}
/** Fatal bridge errors that should not be retried (e.g. auth failures). */
export class BridgeFatalError extends Error {
readonly status: number
/** Server-provided error type, e.g. "environment_expired". */
readonly errorType: string | undefined
constructor(message: string, status: number, errorType?: string) {
super(message)
this.name = 'BridgeFatalError'
this.status = status
this.errorType = errorType
}
}
export function createBridgeApiClient(deps: BridgeApiDeps): BridgeApiClient {
function debug(msg: string): void {
deps.onDebug?.(msg)
}
let consecutiveEmptyPolls = 0
const EMPTY_POLL_LOG_INTERVAL = 100
function getHeaders(accessToken: string): Record<string, string> {
const headers: Record<string, string> = {
Authorization: `Bearer ${accessToken}`,
'Content-Type': 'application/json',
'anthropic-version': '2023-06-01',
'anthropic-beta': BETA_HEADER,
'x-environment-runner-version': deps.runnerVersion,
}
const deviceToken = deps.getTrustedDeviceToken?.()
if (deviceToken) {
headers['X-Trusted-Device-Token'] = deviceToken
}
return headers
}
function resolveAuth(): string {
const accessToken = deps.getAccessToken()
if (!accessToken) {
throw new Error(BRIDGE_LOGIN_INSTRUCTION)
}
return accessToken
}
/**
* Execute an OAuth-authenticated request with a single retry on 401.
* On 401, attempts token refresh via handleOAuth401Error (same pattern as
* withRetry.ts for v1/messages). If refresh succeeds, retries the request
* once with the new token. If refresh fails or the retry also returns 401,
* the 401 response is returned for handleErrorStatus to throw BridgeFatalError.
*/
async function withOAuthRetry<T>(
fn: (accessToken: string) => Promise<{ status: number; data: T }>,
context: string,
): Promise<{ status: number; data: T }> {
const accessToken = resolveAuth()
const response = await fn(accessToken)
if (response.status !== 401) {
return response
}
if (!deps.onAuth401) {
debug(`[bridge:api] ${context}: 401 received, no refresh handler`)
return response
}
// Attempt token refresh — matches the pattern in withRetry.ts
debug(`[bridge:api] ${context}: 401 received, attempting token refresh`)
const refreshed = await deps.onAuth401(accessToken)
if (refreshed) {
debug(`[bridge:api] ${context}: Token refreshed, retrying request`)
const newToken = resolveAuth()
const retryResponse = await fn(newToken)
if (retryResponse.status !== 401) {
return retryResponse
}
debug(`[bridge:api] ${context}: Retry after refresh also got 401`)
} else {
debug(`[bridge:api] ${context}: Token refresh failed`)
}
// Refresh failed — return 401 for handleErrorStatus to throw
return response
}
return {
async registerBridgeEnvironment(
config: BridgeConfig,
): Promise<{ environment_id: string; environment_secret: string }> {
debug(
`[bridge:api] POST /v1/environments/bridge bridgeId=${config.bridgeId}`,
)
const response = await withOAuthRetry(
(token: string) =>
axios.post<{
environment_id: string
environment_secret: string
}>(
`${deps.baseUrl}/v1/environments/bridge`,
{
machine_name: config.machineName,
directory: config.dir,
branch: config.branch,
git_repo_url: config.gitRepoUrl,
// Advertise session capacity so claude.ai/code can show
// "2/4 sessions" badges and only block the picker when
// actually at capacity. Backends that don't yet accept
// this field will silently ignore it.
max_sessions: config.maxSessions,
// worker_type lets claude.ai filter environments by origin
// (e.g. assistant picker only shows assistant-mode workers).
// Desktop cowork app sends "cowork"; we send a distinct value.
metadata: { worker_type: config.workerType },
// Idempotent re-registration: if we have a backend-issued
// environment_id from a prior session (--session-id resume),
// send it back so the backend reattaches instead of creating
// a new env. The backend may still hand back a fresh ID if
// the old one expired — callers must compare the response.
...(config.reuseEnvironmentId && {
environment_id: config.reuseEnvironmentId,
}),
},
{
headers: getHeaders(token),
timeout: 15_000,
validateStatus: status => status < 500,
},
),
'Registration',
)
handleErrorStatus(response.status, response.data, 'Registration')
debug(
`[bridge:api] POST /v1/environments/bridge -> ${response.status} environment_id=${response.data.environment_id}`,
)
debug(
`[bridge:api] >>> ${debugBody({ machine_name: config.machineName, directory: config.dir, branch: config.branch, git_repo_url: config.gitRepoUrl, max_sessions: config.maxSessions, metadata: { worker_type: config.workerType } })}`,
)
debug(`[bridge:api] <<< ${debugBody(response.data)}`)
return response.data
},
async pollForWork(
environmentId: string,
environmentSecret: string,
signal?: AbortSignal,
reclaimOlderThanMs?: number,
): Promise<WorkResponse | null> {
validateBridgeId(environmentId, 'environmentId')
// Save and reset so errors break the "consecutive empty" streak.
// Restored below when the response is truly empty.
const prevEmptyPolls = consecutiveEmptyPolls
consecutiveEmptyPolls = 0
const response = await axios.get<WorkResponse | null>(
`${deps.baseUrl}/v1/environments/${environmentId}/work/poll`,
{
headers: getHeaders(environmentSecret),
params:
reclaimOlderThanMs !== undefined
? { reclaim_older_than_ms: reclaimOlderThanMs }
: undefined,
timeout: 10_000,
signal,
validateStatus: status => status < 500,
},
)
handleErrorStatus(response.status, response.data, 'Poll')
// Empty body or null = no work available
if (!response.data) {
consecutiveEmptyPolls = prevEmptyPolls + 1
if (
consecutiveEmptyPolls === 1 ||
consecutiveEmptyPolls % EMPTY_POLL_LOG_INTERVAL === 0
) {
debug(
`[bridge:api] GET .../work/poll -> ${response.status} (no work, ${consecutiveEmptyPolls} consecutive empty polls)`,
)
}
return null
}
debug(
`[bridge:api] GET .../work/poll -> ${response.status} workId=${response.data.id} type=${response.data.data?.type}${response.data.data?.id ? ` sessionId=${response.data.data.id}` : ''}`,
)
debug(`[bridge:api] <<< ${debugBody(response.data)}`)
return response.data
},
async acknowledgeWork(
environmentId: string,
workId: string,
sessionToken: string,
): Promise<void> {
validateBridgeId(environmentId, 'environmentId')
validateBridgeId(workId, 'workId')
debug(`[bridge:api] POST .../work/${workId}/ack`)
const response = await axios.post(
`${deps.baseUrl}/v1/environments/${environmentId}/work/${workId}/ack`,
{},
{
headers: getHeaders(sessionToken),
timeout: 10_000,
validateStatus: s => s < 500,
},
)
handleErrorStatus(response.status, response.data, 'Acknowledge')
debug(`[bridge:api] POST .../work/${workId}/ack -> ${response.status}`)
},
async stopWork(
environmentId: string,
workId: string,
force: boolean,
): Promise<void> {
validateBridgeId(environmentId, 'environmentId')
validateBridgeId(workId, 'workId')
debug(`[bridge:api] POST .../work/${workId}/stop force=${force}`)
const response = await withOAuthRetry(
(token: string) =>
axios.post(
`${deps.baseUrl}/v1/environments/${environmentId}/work/${workId}/stop`,
{ force },
{
headers: getHeaders(token),
timeout: 10_000,
validateStatus: s => s < 500,
},
),
'StopWork',
)
handleErrorStatus(response.status, response.data, 'StopWork')
debug(`[bridge:api] POST .../work/${workId}/stop -> ${response.status}`)
},
async deregisterEnvironment(environmentId: string): Promise<void> {
validateBridgeId(environmentId, 'environmentId')
debug(`[bridge:api] DELETE /v1/environments/bridge/${environmentId}`)
const response = await withOAuthRetry(
(token: string) =>
axios.delete(
`${deps.baseUrl}/v1/environments/bridge/${environmentId}`,
{
headers: getHeaders(token),
timeout: 10_000,
validateStatus: s => s < 500,
},
),
'Deregister',
)
handleErrorStatus(response.status, response.data, 'Deregister')
debug(
`[bridge:api] DELETE /v1/environments/bridge/${environmentId} -> ${response.status}`,
)
},
async archiveSession(sessionId: string): Promise<void> {
validateBridgeId(sessionId, 'sessionId')
debug(`[bridge:api] POST /v1/sessions/${sessionId}/archive`)
const response = await withOAuthRetry(
(token: string) =>
axios.post(
`${deps.baseUrl}/v1/sessions/${sessionId}/archive`,
{},
{
headers: getHeaders(token),
timeout: 10_000,
validateStatus: s => s < 500,
},
),
'ArchiveSession',
)
// 409 = already archived (idempotent, not an error)
if (response.status === 409) {
debug(
`[bridge:api] POST /v1/sessions/${sessionId}/archive -> 409 (already archived)`,
)
return
}
handleErrorStatus(response.status, response.data, 'ArchiveSession')
debug(
`[bridge:api] POST /v1/sessions/${sessionId}/archive -> ${response.status}`,
)
},
async reconnectSession(
environmentId: string,
sessionId: string,
): Promise<void> {
validateBridgeId(environmentId, 'environmentId')
validateBridgeId(sessionId, 'sessionId')
debug(
`[bridge:api] POST /v1/environments/${environmentId}/bridge/reconnect session_id=${sessionId}`,
)
const response = await withOAuthRetry(
(token: string) =>
axios.post(
`${deps.baseUrl}/v1/environments/${environmentId}/bridge/reconnect`,
{ session_id: sessionId },
{
headers: getHeaders(token),
timeout: 10_000,
validateStatus: s => s < 500,
},
),
'ReconnectSession',
)
handleErrorStatus(response.status, response.data, 'ReconnectSession')
debug(`[bridge:api] POST .../bridge/reconnect -> ${response.status}`)
},
async heartbeatWork(
environmentId: string,
workId: string,
sessionToken: string,
): Promise<{ lease_extended: boolean; state: string }> {
validateBridgeId(environmentId, 'environmentId')
validateBridgeId(workId, 'workId')
debug(`[bridge:api] POST .../work/${workId}/heartbeat`)
const response = await axios.post<{
lease_extended: boolean
state: string
last_heartbeat: string
ttl_seconds: number
}>(
`${deps.baseUrl}/v1/environments/${environmentId}/work/${workId}/heartbeat`,
{},
{
headers: getHeaders(sessionToken),
timeout: 10_000,
validateStatus: s => s < 500,
},
)
handleErrorStatus(response.status, response.data, 'Heartbeat')
debug(
`[bridge:api] POST .../work/${workId}/heartbeat -> ${response.status} lease_extended=${response.data.lease_extended} state=${response.data.state}`,
)
return response.data
},
async sendPermissionResponseEvent(
sessionId: string,
event: PermissionResponseEvent,
sessionToken: string,
): Promise<void> {
validateBridgeId(sessionId, 'sessionId')
debug(
`[bridge:api] POST /v1/sessions/${sessionId}/events type=${event.type}`,
)
const response = await axios.post(
`${deps.baseUrl}/v1/sessions/${sessionId}/events`,
{ events: [event] },
{
headers: getHeaders(sessionToken),
timeout: 10_000,
validateStatus: s => s < 500,
},
)
handleErrorStatus(
response.status,
response.data,
'SendPermissionResponseEvent',
)
debug(
`[bridge:api] POST /v1/sessions/${sessionId}/events -> ${response.status}`,
)
debug(`[bridge:api] >>> ${debugBody({ events: [event] })}`)
debug(`[bridge:api] <<< ${debugBody(response.data)}`)
},
}
}
function handleErrorStatus(
status: number,
data: unknown,
context: string,
): void {
if (status === 200 || status === 204) {
return
}
const detail = extractErrorDetail(data)
const errorType = extractErrorTypeFromData(data)
switch (status) {
case 401:
throw new BridgeFatalError(
`${context}: Authentication failed (401)${detail ? `: ${detail}` : ''}. ${BRIDGE_LOGIN_INSTRUCTION}`,
401,
errorType,
)
case 403:
throw new BridgeFatalError(
isExpiredErrorType(errorType)
? 'Remote Control session has expired. Please restart with `claude remote-control` or /remote-control.'
: `${context}: Access denied (403)${detail ? `: ${detail}` : ''}. Check your organization permissions.`,
403,
errorType,
)
case 404:
throw new BridgeFatalError(
detail ??
`${context}: Not found (404). Remote Control may not be available for this organization.`,
404,
errorType,
)
case 410:
throw new BridgeFatalError(
detail ??
'Remote Control session has expired. Please restart with `claude remote-control` or /remote-control.',
410,
errorType ?? 'environment_expired',
)
case 429:
throw new Error(`${context}: Rate limited (429). Polling too frequently.`)
default:
throw new Error(
`${context}: Failed with status ${status}${detail ? `: ${detail}` : ''}`,
)
}
}
/** Check whether an error type string indicates a session/environment expiry. */
export function isExpiredErrorType(errorType: string | undefined): boolean {
if (!errorType) {
return false
}
return errorType.includes('expired') || errorType.includes('lifetime')
}
/**
* Check whether a BridgeFatalError is a suppressible 403 permission error.
* These are 403 errors for scopes like 'external_poll_sessions' or operations
* like StopWork that fail because the user's role lacks 'environments:manage'.
* They don't affect core functionality and shouldn't be shown to users.
*/
export function isSuppressible403(err: BridgeFatalError): boolean {
if (err.status !== 403) {
return false
}
return (
err.message.includes('external_poll_sessions') ||
err.message.includes('environments:manage')
)
}
function extractErrorTypeFromData(data: unknown): string | undefined {
if (data && typeof data === 'object') {
if (
'error' in data &&
data.error &&
typeof data.error === 'object' &&
'type' in data.error &&
typeof data.error.type === 'string'
) {
return data.error.type
}
}
return undefined
}

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/**
* Shared bridge auth/URL resolution. Consolidates the ant-only
* CLAUDE_BRIDGE_* dev overrides that were previously copy-pasted across
* a dozen files — inboundAttachments, BriefTool/upload, bridgeMain,
* initReplBridge, remoteBridgeCore, daemon workers, /rename,
* /remote-control.
*
* Two layers: *Override() returns the ant-only env var (or undefined);
* the non-Override versions fall through to the real OAuth store/config.
* Callers that compose with a different auth source (e.g. daemon workers
* using IPC auth) use the Override getters directly.
*/
import { getOauthConfig } from '../constants/oauth.js'
import { getClaudeAIOAuthTokens } from '../utils/auth.js'
/** Ant-only dev override: CLAUDE_BRIDGE_OAUTH_TOKEN, else undefined. */
export function getBridgeTokenOverride(): string | undefined {
return (
(process.env.USER_TYPE === 'ant' &&
process.env.CLAUDE_BRIDGE_OAUTH_TOKEN) ||
undefined
)
}
/** Ant-only dev override: CLAUDE_BRIDGE_BASE_URL, else undefined. */
export function getBridgeBaseUrlOverride(): string | undefined {
return (
(process.env.USER_TYPE === 'ant' && process.env.CLAUDE_BRIDGE_BASE_URL) ||
undefined
)
}
/**
* Access token for bridge API calls: dev override first, then the OAuth
* keychain. Undefined means "not logged in".
*/
export function getBridgeAccessToken(): string | undefined {
return getBridgeTokenOverride() ?? getClaudeAIOAuthTokens()?.accessToken
}
/**
* Base URL for bridge API calls: dev override first, then the production
* OAuth config. Always returns a URL.
*/
export function getBridgeBaseUrl(): string {
return getBridgeBaseUrlOverride() ?? getOauthConfig().BASE_API_URL
}

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import { logForDebugging } from '../utils/debug.js'
import { BridgeFatalError } from './bridgeApi.js'
import type { BridgeApiClient } from './types.js'
/**
* Ant-only fault injection for manually testing bridge recovery paths.
*
* Real failure modes this targets (BQ 2026-03-12, 7-day window):
* poll 404 not_found_error — 147K sessions/week, dead onEnvironmentLost gate
* ws_closed 1002/1006 — 22K sessions/week, zombie poll after close
* register transient failure — residual: network blips during doReconnect
*
* Usage: /bridge-kick <subcommand> from the REPL while Remote Control is
* connected, then tail debug.log to watch the recovery machinery react.
*
* Module-level state is intentional here: one bridge per REPL process, the
* /bridge-kick slash command has no other way to reach into initBridgeCore's
* closures, and teardown clears the slot.
*/
/** One-shot fault to inject on the next matching api call. */
type BridgeFault = {
method:
| 'pollForWork'
| 'registerBridgeEnvironment'
| 'reconnectSession'
| 'heartbeatWork'
/** Fatal errors go through handleErrorStatus → BridgeFatalError. Transient
* errors surface as plain axios rejections (5xx / network). Recovery code
* distinguishes the two: fatal → teardown, transient → retry/backoff. */
kind: 'fatal' | 'transient'
status: number
errorType?: string
/** Remaining injections. Decremented on consume; removed at 0. */
count: number
}
export type BridgeDebugHandle = {
/** Invoke the transport's permanent-close handler directly. Tests the
* ws_closed → reconnectEnvironmentWithSession escalation (#22148). */
fireClose: (code: number) => void
/** Call reconnectEnvironmentWithSession() — same as SIGUSR2 but
* reachable from the slash command. */
forceReconnect: () => void
/** Queue a fault for the next N calls to the named api method. */
injectFault: (fault: BridgeFault) => void
/** Abort the at-capacity sleep so an injected poll fault lands
* immediately instead of up to 10min later. */
wakePollLoop: () => void
/** env/session IDs for the debug.log grep. */
describe: () => string
}
let debugHandle: BridgeDebugHandle | null = null
const faultQueue: BridgeFault[] = []
export function registerBridgeDebugHandle(h: BridgeDebugHandle): void {
debugHandle = h
}
export function clearBridgeDebugHandle(): void {
debugHandle = null
faultQueue.length = 0
}
export function getBridgeDebugHandle(): BridgeDebugHandle | null {
return debugHandle
}
export function injectBridgeFault(fault: BridgeFault): void {
faultQueue.push(fault)
logForDebugging(
`[bridge:debug] Queued fault: ${fault.method} ${fault.kind}/${fault.status}${fault.errorType ? `/${fault.errorType}` : ''} ×${fault.count}`,
)
}
/**
* Wrap a BridgeApiClient so each call first checks the fault queue. If a
* matching fault is queued, throw the specified error instead of calling
* through. Delegates everything else to the real client.
*
* Only called when USER_TYPE === 'ant' — zero overhead in external builds.
*/
export function wrapApiForFaultInjection(
api: BridgeApiClient,
): BridgeApiClient {
function consume(method: BridgeFault['method']): BridgeFault | null {
const idx = faultQueue.findIndex(f => f.method === method)
if (idx === -1) return null
const fault = faultQueue[idx]!
fault.count--
if (fault.count <= 0) faultQueue.splice(idx, 1)
return fault
}
function throwFault(fault: BridgeFault, context: string): never {
logForDebugging(
`[bridge:debug] Injecting ${fault.kind} fault into ${context}: status=${fault.status} errorType=${fault.errorType ?? 'none'}`,
)
if (fault.kind === 'fatal') {
throw new BridgeFatalError(
`[injected] ${context} ${fault.status}`,
fault.status,
fault.errorType,
)
}
// Transient: mimic an axios rejection (5xx / network). No .status on
// the error itself — that's how the catch blocks distinguish.
throw new Error(`[injected transient] ${context} ${fault.status}`)
}
return {
...api,
async pollForWork(envId, secret, signal, reclaimMs) {
const f = consume('pollForWork')
if (f) throwFault(f, 'Poll')
return api.pollForWork(envId, secret, signal, reclaimMs)
},
async registerBridgeEnvironment(config) {
const f = consume('registerBridgeEnvironment')
if (f) throwFault(f, 'Registration')
return api.registerBridgeEnvironment(config)
},
async reconnectSession(envId, sessionId) {
const f = consume('reconnectSession')
if (f) throwFault(f, 'ReconnectSession')
return api.reconnectSession(envId, sessionId)
},
async heartbeatWork(envId, workId, token) {
const f = consume('heartbeatWork')
if (f) throwFault(f, 'Heartbeat')
return api.heartbeatWork(envId, workId, token)
},
}
}

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import { feature } from 'bun:bundle'
import {
checkGate_CACHED_OR_BLOCKING,
getDynamicConfig_CACHED_MAY_BE_STALE,
getFeatureValue_CACHED_MAY_BE_STALE,
} from '../services/analytics/growthbook.js'
// Namespace import breaks the bridgeEnabled → auth → config → bridgeEnabled
// cycle — authModule.foo is a live binding, so by the time the helpers below
// call it, auth.js is fully loaded. Previously used require() for the same
// deferral, but require() hits a CJS cache that diverges from the ESM
// namespace after mock.module() (daemon/auth.test.ts), breaking spyOn.
import * as authModule from '../utils/auth.js'
import { isEnvTruthy } from '../utils/envUtils.js'
import { lt } from '../utils/semver.js'
/**
* Runtime check for bridge mode entitlement.
*
* Remote Control requires a claude.ai subscription (the bridge auths to CCR
* with the claude.ai OAuth token). isClaudeAISubscriber() excludes
* Bedrock/Vertex/Foundry, apiKeyHelper/gateway deployments, env-var API keys,
* and Console API logins — none of which have the OAuth token CCR needs.
* See github.com/deshaw/anthropic-issues/issues/24.
*
* The `feature('BRIDGE_MODE')` guard ensures the GrowthBook string literal
* is only referenced when bridge mode is enabled at build time.
*/
export function isBridgeEnabled(): boolean {
// Positive ternary pattern — see docs/feature-gating.md.
// Negative pattern (if (!feature(...)) return) does not eliminate
// inline string literals from external builds.
return feature('BRIDGE_MODE')
? isClaudeAISubscriber() &&
getFeatureValue_CACHED_MAY_BE_STALE('tengu_ccr_bridge', false)
: false
}
/**
* Blocking entitlement check for Remote Control.
*
* Returns cached `true` immediately (fast path). If the disk cache says
* `false` or is missing, awaits GrowthBook init and fetches the fresh
* server value (slow path, max ~5s), then writes it to disk.
*
* Use at entitlement gates where a stale `false` would unfairly block access.
* For user-facing error paths, prefer `getBridgeDisabledReason()` which gives
* a specific diagnostic. For render-body UI visibility checks, use
* `isBridgeEnabled()` instead.
*/
export async function isBridgeEnabledBlocking(): Promise<boolean> {
return feature('BRIDGE_MODE')
? isClaudeAISubscriber() &&
(await checkGate_CACHED_OR_BLOCKING('tengu_ccr_bridge'))
: false
}
/**
* Diagnostic message for why Remote Control is unavailable, or null if
* it's enabled. Call this instead of a bare `isBridgeEnabledBlocking()`
* check when you need to show the user an actionable error.
*
* The GrowthBook gate targets on organizationUUID, which comes from
* config.oauthAccount — populated by /api/oauth/profile during login.
* That endpoint requires the user:profile scope. Tokens without it
* (setup-token, CLAUDE_CODE_OAUTH_TOKEN env var, or pre-scope-expansion
* logins) leave oauthAccount unpopulated, so the gate falls back to
* false and users see a dead-end "not enabled" message with no hint
* that re-login would fix it. See CC-1165 / gh-33105.
*/
export async function getBridgeDisabledReason(): Promise<string | null> {
if (feature('BRIDGE_MODE')) {
if (!isClaudeAISubscriber()) {
return 'Remote Control requires a claude.ai subscription. Run `claude auth login` to sign in with your claude.ai account.'
}
if (!hasProfileScope()) {
return 'Remote Control requires a full-scope login token. Long-lived tokens (from `claude setup-token` or CLAUDE_CODE_OAUTH_TOKEN) are limited to inference-only for security reasons. Run `claude auth login` to use Remote Control.'
}
if (!getOauthAccountInfo()?.organizationUuid) {
return 'Unable to determine your organization for Remote Control eligibility. Run `claude auth login` to refresh your account information.'
}
if (!(await checkGate_CACHED_OR_BLOCKING('tengu_ccr_bridge'))) {
return 'Remote Control is not yet enabled for your account.'
}
return null
}
return 'Remote Control is not available in this build.'
}
// try/catch: main.tsx:5698 calls isBridgeEnabled() while defining the Commander
// program, before enableConfigs() runs. isClaudeAISubscriber() → getGlobalConfig()
// throws "Config accessed before allowed" there. Pre-config, no OAuth token can
// exist anyway — false is correct. Same swallow getFeatureValue_CACHED_MAY_BE_STALE
// already does at growthbook.ts:775-780.
function isClaudeAISubscriber(): boolean {
try {
return authModule.isClaudeAISubscriber()
} catch {
return false
}
}
function hasProfileScope(): boolean {
try {
return authModule.hasProfileScope()
} catch {
return false
}
}
function getOauthAccountInfo(): ReturnType<
typeof authModule.getOauthAccountInfo
> {
try {
return authModule.getOauthAccountInfo()
} catch {
return undefined
}
}
/**
* Runtime check for the env-less (v2) REPL bridge path.
* Returns true when the GrowthBook flag `tengu_bridge_repl_v2` is enabled.
*
* This gates which implementation initReplBridge uses — NOT whether bridge
* is available at all (see isBridgeEnabled above). Daemon/print paths stay
* on the env-based implementation regardless of this gate.
*/
export function isEnvLessBridgeEnabled(): boolean {
return feature('BRIDGE_MODE')
? getFeatureValue_CACHED_MAY_BE_STALE('tengu_bridge_repl_v2', false)
: false
}
/**
* Kill-switch for the `cse_*` → `session_*` client-side retag shim.
*
* The shim exists because compat/convert.go:27 validates TagSession and the
* claude.ai frontend routes on `session_*`, while v2 worker endpoints hand out
* `cse_*`. Once the server tags by environment_kind and the frontend accepts
* `cse_*` directly, flip this to false to make toCompatSessionId a no-op.
* Defaults to true — the shim stays active until explicitly disabled.
*/
export function isCseShimEnabled(): boolean {
return feature('BRIDGE_MODE')
? getFeatureValue_CACHED_MAY_BE_STALE(
'tengu_bridge_repl_v2_cse_shim_enabled',
true,
)
: true
}
/**
* Returns an error message if the current CLI version is below the
* minimum required for the v1 (env-based) Remote Control path, or null if the
* version is fine. The v2 (env-less) path uses checkEnvLessBridgeMinVersion()
* in envLessBridgeConfig.ts instead — the two implementations have independent
* version floors.
*
* Uses cached (non-blocking) GrowthBook config. If GrowthBook hasn't
* loaded yet, the default '0.0.0' means the check passes — a safe fallback.
*/
export function checkBridgeMinVersion(): string | null {
// Positive pattern — see docs/feature-gating.md.
// Negative pattern (if (!feature(...)) return) does not eliminate
// inline string literals from external builds.
if (feature('BRIDGE_MODE')) {
const config = getDynamicConfig_CACHED_MAY_BE_STALE<{
minVersion: string
}>('tengu_bridge_min_version', { minVersion: '0.0.0' })
if (config.minVersion && lt(MACRO.VERSION, config.minVersion)) {
return `Your version of Claude Code (${MACRO.VERSION}) is too old for Remote Control.\nVersion ${config.minVersion} or higher is required. Run \`claude update\` to update.`
}
}
return null
}
/**
* Default for remoteControlAtStartup when the user hasn't explicitly set it.
* When the CCR_AUTO_CONNECT build flag is present (ant-only) and the
* tengu_cobalt_harbor GrowthBook gate is on, all sessions connect to CCR by
* default — the user can still opt out by setting remoteControlAtStartup=false
* in config (explicit settings always win over this default).
*
* Defined here rather than in config.ts to avoid a direct
* config.ts → growthbook.ts import cycle (growthbook.ts → user.ts → config.ts).
*/
export function getCcrAutoConnectDefault(): boolean {
return feature('CCR_AUTO_CONNECT')
? getFeatureValue_CACHED_MAY_BE_STALE('tengu_cobalt_harbor', false)
: false
}
/**
* Opt-in CCR mirror mode — every local session spawns an outbound-only
* Remote Control session that receives forwarded events. Separate from
* getCcrAutoConnectDefault (bidirectional Remote Control). Env var wins for
* local opt-in; GrowthBook controls rollout.
*/
export function isCcrMirrorEnabled(): boolean {
return feature('CCR_MIRROR')
? isEnvTruthy(process.env.CLAUDE_CODE_CCR_MIRROR) ||
getFeatureValue_CACHED_MAY_BE_STALE('tengu_ccr_mirror', false)
: false
}

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/**
* Shared transport-layer helpers for bridge message handling.
*
* Extracted from replBridge.ts so both the env-based core (initBridgeCore)
* and the env-less core (initEnvLessBridgeCore) can use the same ingress
* parsing, control-request handling, and echo-dedup machinery.
*
* Everything here is pure — no closure over bridge-specific state. All
* collaborators (transport, sessionId, UUID sets, callbacks) are passed
* as params.
*/
import { randomUUID } from 'crypto'
import type { SDKMessage } from '../entrypoints/agentSdkTypes.js'
import type {
SDKControlRequest,
SDKControlResponse,
} from '../entrypoints/sdk/controlTypes.js'
import type { SDKResultSuccess } from '../entrypoints/sdk/coreTypes.js'
import { logEvent } from '../services/analytics/index.js'
import { EMPTY_USAGE } from '../services/api/emptyUsage.js'
import type { Message } from '../types/message.js'
import { normalizeControlMessageKeys } from '../utils/controlMessageCompat.js'
import { logForDebugging } from '../utils/debug.js'
import { stripDisplayTagsAllowEmpty } from '../utils/displayTags.js'
import { errorMessage } from '../utils/errors.js'
import type { PermissionMode } from '../utils/permissions/PermissionMode.js'
import { jsonParse } from '../utils/slowOperations.js'
import type { ReplBridgeTransport } from './replBridgeTransport.js'
// ─── Type guards ─────────────────────────────────────────────────────────────
/** Type predicate for parsed WebSocket messages. SDKMessage is a
* discriminated union on `type` — validating the discriminant is
* sufficient for the predicate; callers narrow further via the union. */
export function isSDKMessage(value: unknown): value is SDKMessage {
return (
value !== null &&
typeof value === 'object' &&
'type' in value &&
typeof value.type === 'string'
)
}
/** Type predicate for control_response messages from the server. */
export function isSDKControlResponse(
value: unknown,
): value is SDKControlResponse {
return (
value !== null &&
typeof value === 'object' &&
'type' in value &&
value.type === 'control_response' &&
'response' in value
)
}
/** Type predicate for control_request messages from the server. */
export function isSDKControlRequest(
value: unknown,
): value is SDKControlRequest {
return (
value !== null &&
typeof value === 'object' &&
'type' in value &&
value.type === 'control_request' &&
'request_id' in value &&
'request' in value
)
}
/**
* True for message types that should be forwarded to the bridge transport.
* The server only wants user/assistant turns and slash-command system events;
* everything else (tool_result, progress, etc.) is internal REPL chatter.
*/
export function isEligibleBridgeMessage(m: Message): boolean {
// Virtual messages (REPL inner calls) are display-only — bridge/SDK
// consumers see the REPL tool_use/result which summarizes the work.
if ((m.type === 'user' || m.type === 'assistant') && m.isVirtual) {
return false
}
return (
m.type === 'user' ||
m.type === 'assistant' ||
(m.type === 'system' && m.subtype === 'local_command')
)
}
/**
* Extract title-worthy text from a Message for onUserMessage. Returns
* undefined for messages that shouldn't title the session: non-user, meta
* (nudges), tool results, compact summaries, non-human origins (task
* notifications, channel messages), or pure display-tag content
* (<ide_opened_file>, <session-start-hook>, etc.).
*
* Synthetic interrupts ([Request interrupted by user]) are NOT filtered here —
* isSyntheticMessage lives in messages.ts (heavy import, pulls command
* registry). The initialMessages path in initReplBridge checks it; the
* writeMessages path reaching an interrupt as the *first* message is
* implausible (an interrupt implies a prior prompt already flowed through).
*/
export function extractTitleText(m: Message): string | undefined {
if (m.type !== 'user' || m.isMeta || m.toolUseResult || m.isCompactSummary)
return undefined
if (m.origin && m.origin.kind !== 'human') return undefined
const content = m.message.content
let raw: string | undefined
if (typeof content === 'string') {
raw = content
} else {
for (const block of content) {
if (block.type === 'text') {
raw = block.text
break
}
}
}
if (!raw) return undefined
const clean = stripDisplayTagsAllowEmpty(raw)
return clean || undefined
}
// ─── Ingress routing ─────────────────────────────────────────────────────────
/**
* Parse an ingress WebSocket message and route it to the appropriate handler.
* Ignores messages whose UUID is in recentPostedUUIDs (echoes of what we sent)
* or in recentInboundUUIDs (re-deliveries we've already forwarded — e.g.
* server replayed history after a transport swap lost the seq-num cursor).
*/
export function handleIngressMessage(
data: string,
recentPostedUUIDs: BoundedUUIDSet,
recentInboundUUIDs: BoundedUUIDSet,
onInboundMessage: ((msg: SDKMessage) => void | Promise<void>) | undefined,
onPermissionResponse?: ((response: SDKControlResponse) => void) | undefined,
onControlRequest?: ((request: SDKControlRequest) => void) | undefined,
): void {
try {
const parsed: unknown = normalizeControlMessageKeys(jsonParse(data))
// control_response is not an SDKMessage — check before the type guard
if (isSDKControlResponse(parsed)) {
logForDebugging('[bridge:repl] Ingress message type=control_response')
onPermissionResponse?.(parsed)
return
}
// control_request from the server (initialize, set_model, can_use_tool).
// Must respond promptly or the server kills the WS (~10-14s timeout).
if (isSDKControlRequest(parsed)) {
logForDebugging(
`[bridge:repl] Inbound control_request subtype=${parsed.request.subtype}`,
)
onControlRequest?.(parsed)
return
}
if (!isSDKMessage(parsed)) return
// Check for UUID to detect echoes of our own messages
const uuid =
'uuid' in parsed && typeof parsed.uuid === 'string'
? parsed.uuid
: undefined
if (uuid && recentPostedUUIDs.has(uuid)) {
logForDebugging(
`[bridge:repl] Ignoring echo: type=${parsed.type} uuid=${uuid}`,
)
return
}
// Defensive dedup: drop inbound prompts we've already forwarded. The
// SSE seq-num carryover (lastTransportSequenceNum) is the primary fix
// for history-replay; this catches edge cases where that negotiation
// fails (server ignores from_sequence_num, transport died before
// receiving any frames, etc).
if (uuid && recentInboundUUIDs.has(uuid)) {
logForDebugging(
`[bridge:repl] Ignoring re-delivered inbound: type=${parsed.type} uuid=${uuid}`,
)
return
}
logForDebugging(
`[bridge:repl] Ingress message type=${parsed.type}${uuid ? ` uuid=${uuid}` : ''}`,
)
if (parsed.type === 'user') {
if (uuid) recentInboundUUIDs.add(uuid)
logEvent('tengu_bridge_message_received', {
is_repl: true,
})
// Fire-and-forget — handler may be async (attachment resolution).
void onInboundMessage?.(parsed)
} else {
logForDebugging(
`[bridge:repl] Ignoring non-user inbound message: type=${parsed.type}`,
)
}
} catch (err) {
logForDebugging(
`[bridge:repl] Failed to parse ingress message: ${errorMessage(err)}`,
)
}
}
// ─── Server-initiated control requests ───────────────────────────────────────
export type ServerControlRequestHandlers = {
transport: ReplBridgeTransport | null
sessionId: string
/**
* When true, all mutable requests (interrupt, set_model, set_permission_mode,
* set_max_thinking_tokens) reply with an error instead of false-success.
* initialize still replies success — the server kills the connection otherwise.
* Used by the outbound-only bridge mode and the SDK's /bridge subpath so claude.ai sees a
* proper error instead of "action succeeded but nothing happened locally".
*/
outboundOnly?: boolean
onInterrupt?: () => void
onSetModel?: (model: string | undefined) => void
onSetMaxThinkingTokens?: (maxTokens: number | null) => void
onSetPermissionMode?: (
mode: PermissionMode,
) => { ok: true } | { ok: false; error: string }
}
const OUTBOUND_ONLY_ERROR =
'This session is outbound-only. Enable Remote Control locally to allow inbound control.'
/**
* Respond to inbound control_request messages from the server. The server
* sends these for session lifecycle events (initialize, set_model) and
* for turn-level coordination (interrupt, set_max_thinking_tokens). If we
* don't respond, the server hangs and kills the WS after ~10-14s.
*
* Previously a closure inside initBridgeCore's onWorkReceived; now takes
* collaborators as params so both cores can use it.
*/
export function handleServerControlRequest(
request: SDKControlRequest,
handlers: ServerControlRequestHandlers,
): void {
const {
transport,
sessionId,
outboundOnly,
onInterrupt,
onSetModel,
onSetMaxThinkingTokens,
onSetPermissionMode,
} = handlers
if (!transport) {
logForDebugging(
'[bridge:repl] Cannot respond to control_request: transport not configured',
)
return
}
let response: SDKControlResponse
// Outbound-only: reply error for mutable requests so claude.ai doesn't show
// false success. initialize must still succeed (server kills the connection
// if it doesn't — see comment above).
if (outboundOnly && request.request.subtype !== 'initialize') {
response = {
type: 'control_response',
response: {
subtype: 'error',
request_id: request.request_id,
error: OUTBOUND_ONLY_ERROR,
},
}
const event = { ...response, session_id: sessionId }
void transport.write(event)
logForDebugging(
`[bridge:repl] Rejected ${request.request.subtype} (outbound-only) request_id=${request.request_id}`,
)
return
}
switch (request.request.subtype) {
case 'initialize':
// Respond with minimal capabilities — the REPL handles
// commands, models, and account info itself.
response = {
type: 'control_response',
response: {
subtype: 'success',
request_id: request.request_id,
response: {
commands: [],
output_style: 'normal',
available_output_styles: ['normal'],
models: [],
account: {},
pid: process.pid,
},
},
}
break
case 'set_model':
onSetModel?.(request.request.model)
response = {
type: 'control_response',
response: {
subtype: 'success',
request_id: request.request_id,
},
}
break
case 'set_max_thinking_tokens':
onSetMaxThinkingTokens?.(request.request.max_thinking_tokens)
response = {
type: 'control_response',
response: {
subtype: 'success',
request_id: request.request_id,
},
}
break
case 'set_permission_mode': {
// The callback returns a policy verdict so we can send an error
// control_response without importing isAutoModeGateEnabled /
// isBypassPermissionsModeDisabled here (bootstrap-isolation). If no
// callback is registered (daemon context, which doesn't wire this —
// see daemonBridge.ts), return an error verdict rather than a silent
// false-success: the mode is never actually applied in that context,
// so success would lie to the client.
const verdict = onSetPermissionMode?.(request.request.mode) ?? {
ok: false,
error:
'set_permission_mode is not supported in this context (onSetPermissionMode callback not registered)',
}
if (verdict.ok) {
response = {
type: 'control_response',
response: {
subtype: 'success',
request_id: request.request_id,
},
}
} else {
response = {
type: 'control_response',
response: {
subtype: 'error',
request_id: request.request_id,
error: verdict.error,
},
}
}
break
}
case 'interrupt':
onInterrupt?.()
response = {
type: 'control_response',
response: {
subtype: 'success',
request_id: request.request_id,
},
}
break
default:
// Unknown subtype — respond with error so the server doesn't
// hang waiting for a reply that never comes.
response = {
type: 'control_response',
response: {
subtype: 'error',
request_id: request.request_id,
error: `REPL bridge does not handle control_request subtype: ${request.request.subtype}`,
},
}
}
const event = { ...response, session_id: sessionId }
void transport.write(event)
logForDebugging(
`[bridge:repl] Sent control_response for ${request.request.subtype} request_id=${request.request_id} result=${response.response.subtype}`,
)
}
// ─── Result message (for session archival on teardown) ───────────────────────
/**
* Build a minimal `SDKResultSuccess` message for session archival.
* The server needs this event before a WS close to trigger archival.
*/
export function makeResultMessage(sessionId: string): SDKResultSuccess {
return {
type: 'result',
subtype: 'success',
duration_ms: 0,
duration_api_ms: 0,
is_error: false,
num_turns: 0,
result: '',
stop_reason: null,
total_cost_usd: 0,
usage: { ...EMPTY_USAGE },
modelUsage: {},
permission_denials: [],
session_id: sessionId,
uuid: randomUUID(),
}
}
// ─── BoundedUUIDSet (echo-dedup ring buffer) ─────────────────────────────────
/**
* FIFO-bounded set backed by a circular buffer. Evicts the oldest entry
* when capacity is reached, keeping memory usage constant at O(capacity).
*
* Messages are added in chronological order, so evicted entries are always
* the oldest. The caller relies on external ordering (the hook's
* lastWrittenIndexRef) as the primary dedup — this set is a secondary
* safety net for echo filtering and race-condition dedup.
*/
export class BoundedUUIDSet {
private readonly capacity: number
private readonly ring: (string | undefined)[]
private readonly set = new Set<string>()
private writeIdx = 0
constructor(capacity: number) {
this.capacity = capacity
this.ring = new Array<string | undefined>(capacity)
}
add(uuid: string): void {
if (this.set.has(uuid)) return
// Evict the entry at the current write position (if occupied)
const evicted = this.ring[this.writeIdx]
if (evicted !== undefined) {
this.set.delete(evicted)
}
this.ring[this.writeIdx] = uuid
this.set.add(uuid)
this.writeIdx = (this.writeIdx + 1) % this.capacity
}
has(uuid: string): boolean {
return this.set.has(uuid)
}
clear(): void {
this.set.clear()
this.ring.fill(undefined)
this.writeIdx = 0
}
}

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import type { PermissionUpdate } from '../utils/permissions/PermissionUpdateSchema.js'
type BridgePermissionResponse = {
behavior: 'allow' | 'deny'
updatedInput?: Record<string, unknown>
updatedPermissions?: PermissionUpdate[]
message?: string
}
type BridgePermissionCallbacks = {
sendRequest(
requestId: string,
toolName: string,
input: Record<string, unknown>,
toolUseId: string,
description: string,
permissionSuggestions?: PermissionUpdate[],
blockedPath?: string,
): void
sendResponse(requestId: string, response: BridgePermissionResponse): void
/** Cancel a pending control_request so the web app can dismiss its prompt. */
cancelRequest(requestId: string): void
onResponse(
requestId: string,
handler: (response: BridgePermissionResponse) => void,
): () => void // returns unsubscribe
}
/** Type predicate for validating a parsed control_response payload
* as a BridgePermissionResponse. Checks the required `behavior`
* discriminant rather than using an unsafe `as` cast. */
function isBridgePermissionResponse(
value: unknown,
): value is BridgePermissionResponse {
if (!value || typeof value !== 'object') return false
return (
'behavior' in value &&
(value.behavior === 'allow' || value.behavior === 'deny')
)
}
export { isBridgePermissionResponse }
export type { BridgePermissionCallbacks, BridgePermissionResponse }

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import { mkdir, readFile, stat, unlink, writeFile } from 'fs/promises'
import { dirname, join } from 'path'
import { z } from 'zod/v4'
import { logForDebugging } from '../utils/debug.js'
import { isENOENT } from '../utils/errors.js'
import { getWorktreePathsPortable } from '../utils/getWorktreePathsPortable.js'
import { lazySchema } from '../utils/lazySchema.js'
import {
getProjectsDir,
sanitizePath,
} from '../utils/sessionStoragePortable.js'
import { jsonParse, jsonStringify } from '../utils/slowOperations.js'
/**
* Upper bound on worktree fanout. git worktree list is naturally bounded
* (50 is a LOT), but this caps the parallel stat() burst and guards against
* pathological setups. Above this, --continue falls back to current-dir-only.
*/
const MAX_WORKTREE_FANOUT = 50
/**
* Crash-recovery pointer for Remote Control sessions.
*
* Written immediately after a bridge session is created, periodically
* refreshed during the session, and cleared on clean shutdown. If the
* process dies unclean (crash, kill -9, terminal closed), the pointer
* persists. On next startup, `claude remote-control` detects it and offers
* to resume via the --session-id flow from #20460.
*
* Staleness is checked against the file's mtime (not an embedded timestamp)
* so that a periodic re-write with the same content serves as a refresh —
* matches the backend's rolling BRIDGE_LAST_POLL_TTL (4h) semantics. A
* bridge that's been polling for 5+ hours and then crashes still has a
* fresh pointer as long as the refresh ran within the window.
*
* Scoped per working directory (alongside transcript JSONL files) so two
* concurrent bridges in different repos don't clobber each other.
*/
export const BRIDGE_POINTER_TTL_MS = 4 * 60 * 60 * 1000
const BridgePointerSchema = lazySchema(() =>
z.object({
sessionId: z.string(),
environmentId: z.string(),
source: z.enum(['standalone', 'repl']),
}),
)
export type BridgePointer = z.infer<ReturnType<typeof BridgePointerSchema>>
export function getBridgePointerPath(dir: string): string {
return join(getProjectsDir(), sanitizePath(dir), 'bridge-pointer.json')
}
/**
* Write the pointer. Also used to refresh mtime during long sessions —
* calling with the same IDs is a cheap no-content-change write that bumps
* the staleness clock. Best-effort — a crash-recovery file must never
* itself cause a crash. Logs and swallows on error.
*/
export async function writeBridgePointer(
dir: string,
pointer: BridgePointer,
): Promise<void> {
const path = getBridgePointerPath(dir)
try {
await mkdir(dirname(path), { recursive: true })
await writeFile(path, jsonStringify(pointer), 'utf8')
logForDebugging(`[bridge:pointer] wrote ${path}`)
} catch (err: unknown) {
logForDebugging(`[bridge:pointer] write failed: ${err}`, { level: 'warn' })
}
}
/**
* Read the pointer and its age (ms since last write). Operates directly
* and handles errors — no existence check (CLAUDE.md TOCTOU rule). Returns
* null on any failure: missing file, corrupted JSON, schema mismatch, or
* stale (mtime > 4h ago). Stale/invalid pointers are deleted so they don't
* keep re-prompting after the backend has already GC'd the env.
*/
export async function readBridgePointer(
dir: string,
): Promise<(BridgePointer & { ageMs: number }) | null> {
const path = getBridgePointerPath(dir)
let raw: string
let mtimeMs: number
try {
// stat for mtime (staleness anchor), then read. Two syscalls, but both
// are needed — mtime IS the data we return, not a TOCTOU guard.
mtimeMs = (await stat(path)).mtimeMs
raw = await readFile(path, 'utf8')
} catch {
return null
}
const parsed = BridgePointerSchema().safeParse(safeJsonParse(raw))
if (!parsed.success) {
logForDebugging(`[bridge:pointer] invalid schema, clearing: ${path}`)
await clearBridgePointer(dir)
return null
}
const ageMs = Math.max(0, Date.now() - mtimeMs)
if (ageMs > BRIDGE_POINTER_TTL_MS) {
logForDebugging(`[bridge:pointer] stale (>4h mtime), clearing: ${path}`)
await clearBridgePointer(dir)
return null
}
return { ...parsed.data, ageMs }
}
/**
* Worktree-aware read for `--continue`. The REPL bridge writes its pointer
* to `getOriginalCwd()` which EnterWorktreeTool/activeWorktreeSession can
* mutate to a worktree path — but `claude remote-control --continue` runs
* with `resolve('.')` = shell CWD. This fans out across git worktree
* siblings to find the freshest pointer, matching /resume's semantics.
*
* Fast path: checks `dir` first. Only shells out to `git worktree list` if
* that misses — the common case (pointer in launch dir) is one stat, zero
* exec. Fanout reads run in parallel; capped at MAX_WORKTREE_FANOUT.
*
* Returns the pointer AND the dir it was found in, so the caller can clear
* the right file on resume failure.
*/
export async function readBridgePointerAcrossWorktrees(
dir: string,
): Promise<{ pointer: BridgePointer & { ageMs: number }; dir: string } | null> {
// Fast path: current dir. Covers standalone bridge (always matches) and
// REPL bridge when no worktree mutation happened.
const here = await readBridgePointer(dir)
if (here) {
return { pointer: here, dir }
}
// Fanout: scan worktree siblings. getWorktreePathsPortable has a 5s
// timeout and returns [] on any error (not a git repo, git not installed).
const worktrees = await getWorktreePathsPortable(dir)
if (worktrees.length <= 1) return null
if (worktrees.length > MAX_WORKTREE_FANOUT) {
logForDebugging(
`[bridge:pointer] ${worktrees.length} worktrees exceeds fanout cap ${MAX_WORKTREE_FANOUT}, skipping`,
)
return null
}
// Dedupe against `dir` so we don't re-stat it. sanitizePath normalizes
// case/separators so worktree-list output matches our fast-path key even
// on Windows where git may emit C:/ vs stored c:/.
const dirKey = sanitizePath(dir)
const candidates = worktrees.filter(wt => sanitizePath(wt) !== dirKey)
// Parallel stat+read. Each readBridgePointer is a stat() that ENOENTs
// for worktrees with no pointer (cheap) plus a ~100-byte read for the
// rare ones that have one. Promise.all → latency ≈ slowest single stat.
const results = await Promise.all(
candidates.map(async wt => {
const p = await readBridgePointer(wt)
return p ? { pointer: p, dir: wt } : null
}),
)
// Pick freshest (lowest ageMs). The pointer stores environmentId so
// resume reconnects to the right env regardless of which worktree
// --continue was invoked from.
let freshest: {
pointer: BridgePointer & { ageMs: number }
dir: string
} | null = null
for (const r of results) {
if (r && (!freshest || r.pointer.ageMs < freshest.pointer.ageMs)) {
freshest = r
}
}
if (freshest) {
logForDebugging(
`[bridge:pointer] fanout found pointer in worktree ${freshest.dir} (ageMs=${freshest.pointer.ageMs})`,
)
}
return freshest
}
/**
* Delete the pointer. Idempotent — ENOENT is expected when the process
* shut down clean previously.
*/
export async function clearBridgePointer(dir: string): Promise<void> {
const path = getBridgePointerPath(dir)
try {
await unlink(path)
logForDebugging(`[bridge:pointer] cleared ${path}`)
} catch (err: unknown) {
if (!isENOENT(err)) {
logForDebugging(`[bridge:pointer] clear failed: ${err}`, {
level: 'warn',
})
}
}
}
function safeJsonParse(raw: string): unknown {
try {
return jsonParse(raw)
} catch {
return null
}
}

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import {
getClaudeAiBaseUrl,
getRemoteSessionUrl,
} from '../constants/product.js'
import { stringWidth } from '../ink/stringWidth.js'
import { formatDuration, truncateToWidth } from '../utils/format.js'
import { getGraphemeSegmenter } from '../utils/intl.js'
/** Bridge status state machine states. */
export type StatusState =
| 'idle'
| 'attached'
| 'titled'
| 'reconnecting'
| 'failed'
/** How long a tool activity line stays visible after last tool_start (ms). */
export const TOOL_DISPLAY_EXPIRY_MS = 30_000
/** Interval for the shimmer animation tick (ms). */
export const SHIMMER_INTERVAL_MS = 150
export function timestamp(): string {
const now = new Date()
const h = String(now.getHours()).padStart(2, '0')
const m = String(now.getMinutes()).padStart(2, '0')
const s = String(now.getSeconds()).padStart(2, '0')
return `${h}:${m}:${s}`
}
export { formatDuration, truncateToWidth as truncatePrompt }
/** Abbreviate a tool activity summary for the trail display. */
export function abbreviateActivity(summary: string): string {
return truncateToWidth(summary, 30)
}
/** Build the connect URL shown when the bridge is idle. */
export function buildBridgeConnectUrl(
environmentId: string,
ingressUrl?: string,
): string {
const baseUrl = getClaudeAiBaseUrl(undefined, ingressUrl)
return `${baseUrl}/code?bridge=${environmentId}`
}
/**
* Build the session URL shown when a session is attached. Delegates to
* getRemoteSessionUrl for the cse_→session_ prefix translation, then appends
* the v1-specific ?bridge={environmentId} query.
*/
export function buildBridgeSessionUrl(
sessionId: string,
environmentId: string,
ingressUrl?: string,
): string {
return `${getRemoteSessionUrl(sessionId, ingressUrl)}?bridge=${environmentId}`
}
/** Compute the glimmer index for a reverse-sweep shimmer animation. */
export function computeGlimmerIndex(
tick: number,
messageWidth: number,
): number {
const cycleLength = messageWidth + 20
return messageWidth + 10 - (tick % cycleLength)
}
/**
* Split text into three segments by visual column position for shimmer rendering.
*
* Uses grapheme segmentation and `stringWidth` so the split is correct for
* multi-byte characters, emoji, and CJK glyphs.
*
* Returns `{ before, shimmer, after }` strings. Both renderers (chalk in
* bridgeUI.ts and React/Ink in bridge.tsx) apply their own coloring to
* these segments.
*/
export function computeShimmerSegments(
text: string,
glimmerIndex: number,
): { before: string; shimmer: string; after: string } {
const messageWidth = stringWidth(text)
const shimmerStart = glimmerIndex - 1
const shimmerEnd = glimmerIndex + 1
// When shimmer is offscreen, return all text as "before"
if (shimmerStart >= messageWidth || shimmerEnd < 0) {
return { before: text, shimmer: '', after: '' }
}
// Split into at most 3 segments by visual column position
const clampedStart = Math.max(0, shimmerStart)
let colPos = 0
let before = ''
let shimmer = ''
let after = ''
for (const { segment } of getGraphemeSegmenter().segment(text)) {
const segWidth = stringWidth(segment)
if (colPos + segWidth <= clampedStart) {
before += segment
} else if (colPos > shimmerEnd) {
after += segment
} else {
shimmer += segment
}
colPos += segWidth
}
return { before, shimmer, after }
}
/** Computed bridge status label and color from connection state. */
export type BridgeStatusInfo = {
label:
| 'Remote Control failed'
| 'Remote Control reconnecting'
| 'Remote Control active'
| 'Remote Control connecting\u2026'
color: 'error' | 'warning' | 'success'
}
/** Derive a status label and color from the bridge connection state. */
export function getBridgeStatus({
error,
connected,
sessionActive,
reconnecting,
}: {
error: string | undefined
connected: boolean
sessionActive: boolean
reconnecting: boolean
}): BridgeStatusInfo {
if (error) return { label: 'Remote Control failed', color: 'error' }
if (reconnecting)
return { label: 'Remote Control reconnecting', color: 'warning' }
if (sessionActive || connected)
return { label: 'Remote Control active', color: 'success' }
return { label: 'Remote Control connecting\u2026', color: 'warning' }
}
/** Footer text shown when bridge is idle (Ready state). */
export function buildIdleFooterText(url: string): string {
return `Code everywhere with the Claude app or ${url}`
}
/** Footer text shown when a session is active (Connected state). */
export function buildActiveFooterText(url: string): string {
return `Continue coding in the Claude app or ${url}`
}
/** Footer text shown when the bridge has failed. */
export const FAILED_FOOTER_TEXT = 'Something went wrong, please try again'
/**
* Wrap text in an OSC 8 terminal hyperlink. Zero visual width for layout purposes.
* strip-ansi (used by stringWidth) correctly strips these sequences, so
* countVisualLines in bridgeUI.ts remains accurate.
*/
export function wrapWithOsc8Link(text: string, url: string): string {
return `\x1b]8;;${url}\x07${text}\x1b]8;;\x07`
}

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import chalk from 'chalk'
import { toString as qrToString } from 'qrcode'
import {
BRIDGE_FAILED_INDICATOR,
BRIDGE_READY_INDICATOR,
BRIDGE_SPINNER_FRAMES,
} from '../constants/figures.js'
import { stringWidth } from '../ink/stringWidth.js'
import { logForDebugging } from '../utils/debug.js'
import {
buildActiveFooterText,
buildBridgeConnectUrl,
buildBridgeSessionUrl,
buildIdleFooterText,
FAILED_FOOTER_TEXT,
formatDuration,
type StatusState,
TOOL_DISPLAY_EXPIRY_MS,
timestamp,
truncatePrompt,
wrapWithOsc8Link,
} from './bridgeStatusUtil.js'
import type {
BridgeConfig,
BridgeLogger,
SessionActivity,
SpawnMode,
} from './types.js'
const QR_OPTIONS = {
type: 'utf8' as const,
errorCorrectionLevel: 'L' as const,
small: true,
}
/** Generate a QR code and return its lines. */
async function generateQr(url: string): Promise<string[]> {
const qr = await qrToString(url, QR_OPTIONS)
return qr.split('\n').filter((line: string) => line.length > 0)
}
export function createBridgeLogger(options: {
verbose: boolean
write?: (s: string) => void
}): BridgeLogger {
const write = options.write ?? ((s: string) => process.stdout.write(s))
const verbose = options.verbose
// Track how many status lines are currently displayed at the bottom
let statusLineCount = 0
// Status state machine
let currentState: StatusState = 'idle'
let currentStateText = 'Ready'
let repoName = ''
let branch = ''
let debugLogPath = ''
// Connect URL (built in printBanner with correct base for staging/prod)
let connectUrl = ''
let cachedIngressUrl = ''
let cachedEnvironmentId = ''
let activeSessionUrl: string | null = null
// QR code lines for the current URL
let qrLines: string[] = []
let qrVisible = false
// Tool activity for the second status line
let lastToolSummary: string | null = null
let lastToolTime = 0
// Session count indicator (shown when multi-session mode is enabled)
let sessionActive = 0
let sessionMax = 1
// Spawn mode shown in the session-count line + gates the `w` hint
let spawnModeDisplay: 'same-dir' | 'worktree' | null = null
let spawnMode: SpawnMode = 'single-session'
// Per-session display info for the multi-session bullet list (keyed by compat sessionId)
const sessionDisplayInfo = new Map<
string,
{ title?: string; url: string; activity?: SessionActivity }
>()
// Connecting spinner state
let connectingTimer: ReturnType<typeof setInterval> | null = null
let connectingTick = 0
/**
* Count how many visual terminal rows a string occupies, accounting for
* line wrapping. Each `\n` is one row, and content wider than the terminal
* wraps to additional rows.
*/
function countVisualLines(text: string): number {
// eslint-disable-next-line custom-rules/prefer-use-terminal-size
const cols = process.stdout.columns || 80 // non-React CLI context
let count = 0
// Split on newlines to get logical lines
for (const logical of text.split('\n')) {
if (logical.length === 0) {
// Empty segment between consecutive \n — counts as 1 row
count++
continue
}
const width = stringWidth(logical)
count += Math.max(1, Math.ceil(width / cols))
}
// The trailing \n in "line\n" produces an empty last element — don't count it
// because the cursor sits at the start of the next line, not a new visual row.
if (text.endsWith('\n')) {
count--
}
return count
}
/** Write a status line and track its visual line count. */
function writeStatus(text: string): void {
write(text)
statusLineCount += countVisualLines(text)
}
/** Clear any currently displayed status lines. */
function clearStatusLines(): void {
if (statusLineCount <= 0) return
logForDebugging(`[bridge:ui] clearStatusLines count=${statusLineCount}`)
// Move cursor up to the start of the status block, then erase everything below
write(`\x1b[${statusLineCount}A`) // cursor up N lines
write('\x1b[J') // erase from cursor to end of screen
statusLineCount = 0
}
/** Print a permanent log line, clearing status first and restoring after. */
function printLog(line: string): void {
clearStatusLines()
write(line)
}
/** Regenerate the QR code with the given URL. */
function regenerateQr(url: string): void {
generateQr(url)
.then(lines => {
qrLines = lines
renderStatusLine()
})
.catch(e => {
logForDebugging(`QR code generation failed: ${e}`, { level: 'error' })
})
}
/** Render the connecting spinner line (shown before first updateIdleStatus). */
function renderConnectingLine(): void {
clearStatusLines()
const frame =
BRIDGE_SPINNER_FRAMES[connectingTick % BRIDGE_SPINNER_FRAMES.length]!
let suffix = ''
if (repoName) {
suffix += chalk.dim(' \u00b7 ') + chalk.dim(repoName)
}
if (branch) {
suffix += chalk.dim(' \u00b7 ') + chalk.dim(branch)
}
writeStatus(
`${chalk.yellow(frame)} ${chalk.yellow('Connecting')}${suffix}\n`,
)
}
/** Start the connecting spinner. Stopped by first updateIdleStatus(). */
function startConnecting(): void {
stopConnecting()
renderConnectingLine()
connectingTimer = setInterval(() => {
connectingTick++
renderConnectingLine()
}, 150)
}
/** Stop the connecting spinner. */
function stopConnecting(): void {
if (connectingTimer) {
clearInterval(connectingTimer)
connectingTimer = null
}
}
/** Render and write the current status lines based on state. */
function renderStatusLine(): void {
if (currentState === 'reconnecting' || currentState === 'failed') {
// These states are handled separately (updateReconnectingStatus /
// updateFailedStatus). Return before clearing so callers like toggleQr
// and setSpawnModeDisplay don't blank the display during these states.
return
}
clearStatusLines()
const isIdle = currentState === 'idle'
// QR code above the status line
if (qrVisible) {
for (const line of qrLines) {
writeStatus(`${chalk.dim(line)}\n`)
}
}
// Determine indicator and colors based on state
const indicator = BRIDGE_READY_INDICATOR
const indicatorColor = isIdle ? chalk.green : chalk.cyan
const baseColor = isIdle ? chalk.green : chalk.cyan
const stateText = baseColor(currentStateText)
// Build the suffix with repo and branch
let suffix = ''
if (repoName) {
suffix += chalk.dim(' \u00b7 ') + chalk.dim(repoName)
}
// In worktree mode each session gets its own branch, so showing the
// bridge's branch would be misleading.
if (branch && spawnMode !== 'worktree') {
suffix += chalk.dim(' \u00b7 ') + chalk.dim(branch)
}
if (process.env.USER_TYPE === 'ant' && debugLogPath) {
writeStatus(
`${chalk.yellow('[ANT-ONLY] Logs:')} ${chalk.dim(debugLogPath)}\n`,
)
}
writeStatus(`${indicatorColor(indicator)} ${stateText}${suffix}\n`)
// Session count and per-session list (multi-session mode only)
if (sessionMax > 1) {
const modeHint =
spawnMode === 'worktree'
? 'New sessions will be created in an isolated worktree'
: 'New sessions will be created in the current directory'
writeStatus(
` ${chalk.dim(`Capacity: ${sessionActive}/${sessionMax} \u00b7 ${modeHint}`)}\n`,
)
for (const [, info] of sessionDisplayInfo) {
const titleText = info.title
? truncatePrompt(info.title, 35)
: chalk.dim('Attached')
const titleLinked = wrapWithOsc8Link(titleText, info.url)
const act = info.activity
const showAct = act && act.type !== 'result' && act.type !== 'error'
const actText = showAct
? chalk.dim(` ${truncatePrompt(act.summary, 40)}`)
: ''
writeStatus(` ${titleLinked}${actText}
`)
}
}
// Mode line for spawn modes with a single slot (or true single-session mode)
if (sessionMax === 1) {
const modeText =
spawnMode === 'single-session'
? 'Single session \u00b7 exits when complete'
: spawnMode === 'worktree'
? `Capacity: ${sessionActive}/1 \u00b7 New sessions will be created in an isolated worktree`
: `Capacity: ${sessionActive}/1 \u00b7 New sessions will be created in the current directory`
writeStatus(` ${chalk.dim(modeText)}\n`)
}
// Tool activity line for single-session mode
if (
sessionMax === 1 &&
!isIdle &&
lastToolSummary &&
Date.now() - lastToolTime < TOOL_DISPLAY_EXPIRY_MS
) {
writeStatus(` ${chalk.dim(truncatePrompt(lastToolSummary, 60))}\n`)
}
// Blank line separator before footer
const url = activeSessionUrl ?? connectUrl
if (url) {
writeStatus('\n')
const footerText = isIdle
? buildIdleFooterText(url)
: buildActiveFooterText(url)
const qrHint = qrVisible
? chalk.dim.italic('space to hide QR code')
: chalk.dim.italic('space to show QR code')
const toggleHint = spawnModeDisplay
? chalk.dim.italic(' \u00b7 w to toggle spawn mode')
: ''
writeStatus(`${chalk.dim(footerText)}\n`)
writeStatus(`${qrHint}${toggleHint}\n`)
}
}
return {
printBanner(config: BridgeConfig, environmentId: string): void {
cachedIngressUrl = config.sessionIngressUrl
cachedEnvironmentId = environmentId
connectUrl = buildBridgeConnectUrl(environmentId, cachedIngressUrl)
regenerateQr(connectUrl)
if (verbose) {
write(chalk.dim(`Remote Control`) + ` v${MACRO.VERSION}\n`)
}
if (verbose) {
if (config.spawnMode !== 'single-session') {
write(chalk.dim(`Spawn mode: `) + `${config.spawnMode}\n`)
write(
chalk.dim(`Max concurrent sessions: `) + `${config.maxSessions}\n`,
)
}
write(chalk.dim(`Environment ID: `) + `${environmentId}\n`)
}
if (config.sandbox) {
write(chalk.dim(`Sandbox: `) + `${chalk.green('Enabled')}\n`)
}
write('\n')
// Start connecting spinner — first updateIdleStatus() will stop it
startConnecting()
},
logSessionStart(sessionId: string, prompt: string): void {
if (verbose) {
const short = truncatePrompt(prompt, 80)
printLog(
chalk.dim(`[${timestamp()}]`) +
` Session started: ${chalk.white(`"${short}"`)} (${chalk.dim(sessionId)})\n`,
)
}
},
logSessionComplete(sessionId: string, durationMs: number): void {
printLog(
chalk.dim(`[${timestamp()}]`) +
` Session ${chalk.green('completed')} (${formatDuration(durationMs)}) ${chalk.dim(sessionId)}\n`,
)
},
logSessionFailed(sessionId: string, error: string): void {
printLog(
chalk.dim(`[${timestamp()}]`) +
` Session ${chalk.red('failed')}: ${error} ${chalk.dim(sessionId)}\n`,
)
},
logStatus(message: string): void {
printLog(chalk.dim(`[${timestamp()}]`) + ` ${message}\n`)
},
logVerbose(message: string): void {
if (verbose) {
printLog(chalk.dim(`[${timestamp()}] ${message}`) + '\n')
}
},
logError(message: string): void {
printLog(chalk.red(`[${timestamp()}] Error: ${message}`) + '\n')
},
logReconnected(disconnectedMs: number): void {
printLog(
chalk.dim(`[${timestamp()}]`) +
` ${chalk.green('Reconnected')} after ${formatDuration(disconnectedMs)}\n`,
)
},
setRepoInfo(repo: string, branchName: string): void {
repoName = repo
branch = branchName
},
setDebugLogPath(path: string): void {
debugLogPath = path
},
updateIdleStatus(): void {
stopConnecting()
currentState = 'idle'
currentStateText = 'Ready'
lastToolSummary = null
lastToolTime = 0
activeSessionUrl = null
regenerateQr(connectUrl)
renderStatusLine()
},
setAttached(sessionId: string): void {
stopConnecting()
currentState = 'attached'
currentStateText = 'Connected'
lastToolSummary = null
lastToolTime = 0
// Multi-session: keep footer/QR on the environment connect URL so users
// can spawn more sessions. Per-session links are in the bullet list.
if (sessionMax <= 1) {
activeSessionUrl = buildBridgeSessionUrl(
sessionId,
cachedEnvironmentId,
cachedIngressUrl,
)
regenerateQr(activeSessionUrl)
}
renderStatusLine()
},
updateReconnectingStatus(delayStr: string, elapsedStr: string): void {
stopConnecting()
clearStatusLines()
currentState = 'reconnecting'
// QR code above the status line
if (qrVisible) {
for (const line of qrLines) {
writeStatus(`${chalk.dim(line)}\n`)
}
}
const frame =
BRIDGE_SPINNER_FRAMES[connectingTick % BRIDGE_SPINNER_FRAMES.length]!
connectingTick++
writeStatus(
`${chalk.yellow(frame)} ${chalk.yellow('Reconnecting')} ${chalk.dim('\u00b7')} ${chalk.dim(`retrying in ${delayStr}`)} ${chalk.dim('\u00b7')} ${chalk.dim(`disconnected ${elapsedStr}`)}\n`,
)
},
updateFailedStatus(error: string): void {
stopConnecting()
clearStatusLines()
currentState = 'failed'
let suffix = ''
if (repoName) {
suffix += chalk.dim(' \u00b7 ') + chalk.dim(repoName)
}
if (branch) {
suffix += chalk.dim(' \u00b7 ') + chalk.dim(branch)
}
writeStatus(
`${chalk.red(BRIDGE_FAILED_INDICATOR)} ${chalk.red('Remote Control Failed')}${suffix}\n`,
)
writeStatus(`${chalk.dim(FAILED_FOOTER_TEXT)}\n`)
if (error) {
writeStatus(`${chalk.red(error)}\n`)
}
},
updateSessionStatus(
_sessionId: string,
_elapsed: string,
activity: SessionActivity,
_trail: string[],
): void {
// Cache tool activity for the second status line
if (activity.type === 'tool_start') {
lastToolSummary = activity.summary
lastToolTime = Date.now()
}
renderStatusLine()
},
clearStatus(): void {
stopConnecting()
clearStatusLines()
},
toggleQr(): void {
qrVisible = !qrVisible
renderStatusLine()
},
updateSessionCount(active: number, max: number, mode: SpawnMode): void {
if (sessionActive === active && sessionMax === max && spawnMode === mode)
return
sessionActive = active
sessionMax = max
spawnMode = mode
// Don't re-render here — the status ticker calls renderStatusLine
// on its own cadence, and the next tick will pick up the new values.
},
setSpawnModeDisplay(mode: 'same-dir' | 'worktree' | null): void {
if (spawnModeDisplay === mode) return
spawnModeDisplay = mode
// Also sync the #21118-added spawnMode so the next render shows correct
// mode hint + branch visibility. Don't render here — matches
// updateSessionCount: called before printBanner (initial setup) and
// again from the `w` handler (which follows with refreshDisplay).
if (mode) spawnMode = mode
},
addSession(sessionId: string, url: string): void {
sessionDisplayInfo.set(sessionId, { url })
},
updateSessionActivity(sessionId: string, activity: SessionActivity): void {
const info = sessionDisplayInfo.get(sessionId)
if (!info) return
info.activity = activity
},
setSessionTitle(sessionId: string, title: string): void {
const info = sessionDisplayInfo.get(sessionId)
if (!info) return
info.title = title
// Guard against reconnecting/failed — renderStatusLine clears then returns
// early for those states, which would erase the spinner/error.
if (currentState === 'reconnecting' || currentState === 'failed') return
if (sessionMax === 1) {
// Single-session: show title in the main status line too.
currentState = 'titled'
currentStateText = truncatePrompt(title, 40)
}
renderStatusLine()
},
removeSession(sessionId: string): void {
sessionDisplayInfo.delete(sessionId)
},
refreshDisplay(): void {
// Skip during reconnecting/failed — renderStatusLine clears then returns
// early for those states, which would erase the spinner/error.
if (currentState === 'reconnecting' || currentState === 'failed') return
renderStatusLine()
},
}
}

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/**
* Shared capacity-wake primitive for bridge poll loops.
*
* Both replBridge.ts and bridgeMain.ts need to sleep while "at capacity"
* but wake early when either (a) the outer loop signal aborts (shutdown),
* or (b) capacity frees up (session done / transport lost). This module
* encapsulates the mutable wake-controller + two-signal merger that both
* poll loops previously duplicated byte-for-byte.
*/
export type CapacitySignal = { signal: AbortSignal; cleanup: () => void }
export type CapacityWake = {
/**
* Create a signal that aborts when either the outer loop signal or the
* capacity-wake controller fires. Returns the merged signal and a cleanup
* function that removes listeners when the sleep resolves normally
* (without abort).
*/
signal(): CapacitySignal
/**
* Abort the current at-capacity sleep and arm a fresh controller so the
* poll loop immediately re-checks for new work.
*/
wake(): void
}
export function createCapacityWake(outerSignal: AbortSignal): CapacityWake {
let wakeController = new AbortController()
function wake(): void {
wakeController.abort()
wakeController = new AbortController()
}
function signal(): CapacitySignal {
const merged = new AbortController()
const abort = (): void => merged.abort()
if (outerSignal.aborted || wakeController.signal.aborted) {
merged.abort()
return { signal: merged.signal, cleanup: () => {} }
}
outerSignal.addEventListener('abort', abort, { once: true })
const capSig = wakeController.signal
capSig.addEventListener('abort', abort, { once: true })
return {
signal: merged.signal,
cleanup: () => {
outerSignal.removeEventListener('abort', abort)
capSig.removeEventListener('abort', abort)
},
}
}
return { signal, wake }
}

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/**
* Thin HTTP wrappers for the CCR v2 code-session API.
*
* Separate file from remoteBridgeCore.ts so the SDK /bridge subpath can
* export createCodeSession + fetchRemoteCredentials without bundling the
* heavy CLI tree (analytics, transport, etc.). Callers supply explicit
* accessToken + baseUrl — no implicit auth or config reads.
*/
import axios from 'axios'
import { logForDebugging } from '../utils/debug.js'
import { errorMessage } from '../utils/errors.js'
import { jsonStringify } from '../utils/slowOperations.js'
import { extractErrorDetail } from './debugUtils.js'
const ANTHROPIC_VERSION = '2023-06-01'
function oauthHeaders(accessToken: string): Record<string, string> {
return {
Authorization: `Bearer ${accessToken}`,
'Content-Type': 'application/json',
'anthropic-version': ANTHROPIC_VERSION,
}
}
export async function createCodeSession(
baseUrl: string,
accessToken: string,
title: string,
timeoutMs: number,
tags?: string[],
): Promise<string | null> {
const url = `${baseUrl}/v1/code/sessions`
let response
try {
response = await axios.post(
url,
// bridge: {} is the positive signal for the oneof runner — omitting it
// (or sending environment_id: "") now 400s. BridgeRunner is an empty
// message today; it's a placeholder for future bridge-specific options.
{ title, bridge: {}, ...(tags?.length ? { tags } : {}) },
{
headers: oauthHeaders(accessToken),
timeout: timeoutMs,
validateStatus: s => s < 500,
},
)
} catch (err: unknown) {
logForDebugging(
`[code-session] Session create request failed: ${errorMessage(err)}`,
)
return null
}
if (response.status !== 200 && response.status !== 201) {
const detail = extractErrorDetail(response.data)
logForDebugging(
`[code-session] Session create failed ${response.status}${detail ? `: ${detail}` : ''}`,
)
return null
}
const data: unknown = response.data
if (
!data ||
typeof data !== 'object' ||
!('session' in data) ||
!data.session ||
typeof data.session !== 'object' ||
!('id' in data.session) ||
typeof data.session.id !== 'string' ||
!data.session.id.startsWith('cse_')
) {
logForDebugging(
`[code-session] No session.id (cse_*) in response: ${jsonStringify(data).slice(0, 200)}`,
)
return null
}
return data.session.id
}
/**
* Credentials from POST /bridge. JWT is opaque — do not decode.
* Each /bridge call bumps worker_epoch server-side (it IS the register).
*/
export type RemoteCredentials = {
worker_jwt: string
api_base_url: string
expires_in: number
worker_epoch: number
}
export async function fetchRemoteCredentials(
sessionId: string,
baseUrl: string,
accessToken: string,
timeoutMs: number,
trustedDeviceToken?: string,
): Promise<RemoteCredentials | null> {
const url = `${baseUrl}/v1/code/sessions/${sessionId}/bridge`
const headers = oauthHeaders(accessToken)
if (trustedDeviceToken) {
headers['X-Trusted-Device-Token'] = trustedDeviceToken
}
let response
try {
response = await axios.post(
url,
{},
{
headers,
timeout: timeoutMs,
validateStatus: s => s < 500,
},
)
} catch (err: unknown) {
logForDebugging(
`[code-session] /bridge request failed: ${errorMessage(err)}`,
)
return null
}
if (response.status !== 200) {
const detail = extractErrorDetail(response.data)
logForDebugging(
`[code-session] /bridge failed ${response.status}${detail ? `: ${detail}` : ''}`,
)
return null
}
const data: unknown = response.data
if (
data === null ||
typeof data !== 'object' ||
!('worker_jwt' in data) ||
typeof data.worker_jwt !== 'string' ||
!('expires_in' in data) ||
typeof data.expires_in !== 'number' ||
!('api_base_url' in data) ||
typeof data.api_base_url !== 'string' ||
!('worker_epoch' in data)
) {
logForDebugging(
`[code-session] /bridge response malformed (need worker_jwt, expires_in, api_base_url, worker_epoch): ${jsonStringify(data).slice(0, 200)}`,
)
return null
}
// protojson serializes int64 as a string to avoid JS precision loss;
// Go may also return a number depending on encoder settings.
const rawEpoch = data.worker_epoch
const epoch = typeof rawEpoch === 'string' ? Number(rawEpoch) : rawEpoch
if (
typeof epoch !== 'number' ||
!Number.isFinite(epoch) ||
!Number.isSafeInteger(epoch)
) {
logForDebugging(
`[code-session] /bridge worker_epoch invalid: ${jsonStringify(rawEpoch)}`,
)
return null
}
return {
worker_jwt: data.worker_jwt,
api_base_url: data.api_base_url,
expires_in: data.expires_in,
worker_epoch: epoch,
}
}

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import type { SDKMessage } from '../entrypoints/agentSdkTypes.js'
import { logForDebugging } from '../utils/debug.js'
import { errorMessage } from '../utils/errors.js'
import { extractErrorDetail } from './debugUtils.js'
import { toCompatSessionId } from './sessionIdCompat.js'
type GitSource = {
type: 'git_repository'
url: string
revision?: string
}
type GitOutcome = {
type: 'git_repository'
git_info: { type: 'github'; repo: string; branches: string[] }
}
// Events must be wrapped in { type: 'event', data: <sdk_message> } for the
// POST /v1/sessions endpoint (discriminated union format).
type SessionEvent = {
type: 'event'
data: SDKMessage
}
/**
* Create a session on a bridge environment via POST /v1/sessions.
*
* Used by both `claude remote-control` (empty session so the user has somewhere to
* type immediately) and `/remote-control` (session pre-populated with conversation
* history).
*
* Returns the session ID on success, or null if creation fails (non-fatal).
*/
export async function createBridgeSession({
environmentId,
title,
events,
gitRepoUrl,
branch,
signal,
baseUrl: baseUrlOverride,
getAccessToken,
permissionMode,
}: {
environmentId: string
title?: string
events: SessionEvent[]
gitRepoUrl: string | null
branch: string
signal: AbortSignal
baseUrl?: string
getAccessToken?: () => string | undefined
permissionMode?: string
}): Promise<string | null> {
const { getClaudeAIOAuthTokens } = await import('../utils/auth.js')
const { getOrganizationUUID } = await import('../services/oauth/client.js')
const { getOauthConfig } = await import('../constants/oauth.js')
const { getOAuthHeaders } = await import('../utils/teleport/api.js')
const { parseGitHubRepository } = await import('../utils/detectRepository.js')
const { getDefaultBranch } = await import('../utils/git.js')
const { getMainLoopModel } = await import('../utils/model/model.js')
const { default: axios } = await import('axios')
const accessToken =
getAccessToken?.() ?? getClaudeAIOAuthTokens()?.accessToken
if (!accessToken) {
logForDebugging('[bridge] No access token for session creation')
return null
}
const orgUUID = await getOrganizationUUID()
if (!orgUUID) {
logForDebugging('[bridge] No org UUID for session creation')
return null
}
// Build git source and outcome context
let gitSource: GitSource | null = null
let gitOutcome: GitOutcome | null = null
if (gitRepoUrl) {
const { parseGitRemote } = await import('../utils/detectRepository.js')
const parsed = parseGitRemote(gitRepoUrl)
if (parsed) {
const { host, owner, name } = parsed
const revision = branch || (await getDefaultBranch()) || undefined
gitSource = {
type: 'git_repository',
url: `https://${host}/${owner}/${name}`,
revision,
}
gitOutcome = {
type: 'git_repository',
git_info: {
type: 'github',
repo: `${owner}/${name}`,
branches: [`claude/${branch || 'task'}`],
},
}
} else {
// Fallback: try parseGitHubRepository for owner/repo format
const ownerRepo = parseGitHubRepository(gitRepoUrl)
if (ownerRepo) {
const [owner, name] = ownerRepo.split('/')
if (owner && name) {
const revision = branch || (await getDefaultBranch()) || undefined
gitSource = {
type: 'git_repository',
url: `https://github.com/${owner}/${name}`,
revision,
}
gitOutcome = {
type: 'git_repository',
git_info: {
type: 'github',
repo: `${owner}/${name}`,
branches: [`claude/${branch || 'task'}`],
},
}
}
}
}
}
const requestBody = {
...(title !== undefined && { title }),
events,
session_context: {
sources: gitSource ? [gitSource] : [],
outcomes: gitOutcome ? [gitOutcome] : [],
model: getMainLoopModel(),
},
environment_id: environmentId,
source: 'remote-control',
...(permissionMode && { permission_mode: permissionMode }),
}
const headers = {
...getOAuthHeaders(accessToken),
'anthropic-beta': 'ccr-byoc-2025-07-29',
'x-organization-uuid': orgUUID,
}
const url = `${baseUrlOverride ?? getOauthConfig().BASE_API_URL}/v1/sessions`
let response
try {
response = await axios.post(url, requestBody, {
headers,
signal,
validateStatus: s => s < 500,
})
} catch (err: unknown) {
logForDebugging(
`[bridge] Session creation request failed: ${errorMessage(err)}`,
)
return null
}
const isSuccess = response.status === 200 || response.status === 201
if (!isSuccess) {
const detail = extractErrorDetail(response.data)
logForDebugging(
`[bridge] Session creation failed with status ${response.status}${detail ? `: ${detail}` : ''}`,
)
return null
}
const sessionData: unknown = response.data
if (
!sessionData ||
typeof sessionData !== 'object' ||
!('id' in sessionData) ||
typeof sessionData.id !== 'string'
) {
logForDebugging('[bridge] No session ID in response')
return null
}
return sessionData.id
}
/**
* Fetch a bridge session via GET /v1/sessions/{id}.
*
* Returns the session's environment_id (for `--session-id` resume) and title.
* Uses the same org-scoped headers as create/archive — the environments-level
* client in bridgeApi.ts uses a different beta header and no org UUID, which
* makes the Sessions API return 404.
*/
export async function getBridgeSession(
sessionId: string,
opts?: { baseUrl?: string; getAccessToken?: () => string | undefined },
): Promise<{ environment_id?: string; title?: string } | null> {
const { getClaudeAIOAuthTokens } = await import('../utils/auth.js')
const { getOrganizationUUID } = await import('../services/oauth/client.js')
const { getOauthConfig } = await import('../constants/oauth.js')
const { getOAuthHeaders } = await import('../utils/teleport/api.js')
const { default: axios } = await import('axios')
const accessToken =
opts?.getAccessToken?.() ?? getClaudeAIOAuthTokens()?.accessToken
if (!accessToken) {
logForDebugging('[bridge] No access token for session fetch')
return null
}
const orgUUID = await getOrganizationUUID()
if (!orgUUID) {
logForDebugging('[bridge] No org UUID for session fetch')
return null
}
const headers = {
...getOAuthHeaders(accessToken),
'anthropic-beta': 'ccr-byoc-2025-07-29',
'x-organization-uuid': orgUUID,
}
const url = `${opts?.baseUrl ?? getOauthConfig().BASE_API_URL}/v1/sessions/${sessionId}`
logForDebugging(`[bridge] Fetching session ${sessionId}`)
let response
try {
response = await axios.get<{ environment_id?: string; title?: string }>(
url,
{ headers, timeout: 10_000, validateStatus: s => s < 500 },
)
} catch (err: unknown) {
logForDebugging(
`[bridge] Session fetch request failed: ${errorMessage(err)}`,
)
return null
}
if (response.status !== 200) {
const detail = extractErrorDetail(response.data)
logForDebugging(
`[bridge] Session fetch failed with status ${response.status}${detail ? `: ${detail}` : ''}`,
)
return null
}
return response.data
}
/**
* Archive a bridge session via POST /v1/sessions/{id}/archive.
*
* The CCR server never auto-archives sessions — archival is always an
* explicit client action. Both `claude remote-control` (standalone bridge) and the
* always-on `/remote-control` REPL bridge call this during shutdown to archive any
* sessions that are still alive.
*
* The archive endpoint accepts sessions in any status (running, idle,
* requires_action, pending) and returns 409 if already archived, making
* it safe to call even if the server-side runner already archived the
* session.
*
* Callers must handle errors — this function has no try/catch; 5xx,
* timeouts, and network errors throw. Archival is best-effort during
* cleanup; call sites wrap with .catch().
*/
export async function archiveBridgeSession(
sessionId: string,
opts?: {
baseUrl?: string
getAccessToken?: () => string | undefined
timeoutMs?: number
},
): Promise<void> {
const { getClaudeAIOAuthTokens } = await import('../utils/auth.js')
const { getOrganizationUUID } = await import('../services/oauth/client.js')
const { getOauthConfig } = await import('../constants/oauth.js')
const { getOAuthHeaders } = await import('../utils/teleport/api.js')
const { default: axios } = await import('axios')
const accessToken =
opts?.getAccessToken?.() ?? getClaudeAIOAuthTokens()?.accessToken
if (!accessToken) {
logForDebugging('[bridge] No access token for session archive')
return
}
const orgUUID = await getOrganizationUUID()
if (!orgUUID) {
logForDebugging('[bridge] No org UUID for session archive')
return
}
const headers = {
...getOAuthHeaders(accessToken),
'anthropic-beta': 'ccr-byoc-2025-07-29',
'x-organization-uuid': orgUUID,
}
const url = `${opts?.baseUrl ?? getOauthConfig().BASE_API_URL}/v1/sessions/${sessionId}/archive`
logForDebugging(`[bridge] Archiving session ${sessionId}`)
const response = await axios.post(
url,
{},
{
headers,
timeout: opts?.timeoutMs ?? 10_000,
validateStatus: s => s < 500,
},
)
if (response.status === 200) {
logForDebugging(`[bridge] Session ${sessionId} archived successfully`)
} else {
const detail = extractErrorDetail(response.data)
logForDebugging(
`[bridge] Session archive failed with status ${response.status}${detail ? `: ${detail}` : ''}`,
)
}
}
/**
* Update the title of a bridge session via PATCH /v1/sessions/{id}.
*
* Called when the user renames a session via /rename while a bridge
* connection is active, so the title stays in sync on claude.ai/code.
*
* Errors are swallowed — title sync is best-effort.
*/
export async function updateBridgeSessionTitle(
sessionId: string,
title: string,
opts?: { baseUrl?: string; getAccessToken?: () => string | undefined },
): Promise<void> {
const { getClaudeAIOAuthTokens } = await import('../utils/auth.js')
const { getOrganizationUUID } = await import('../services/oauth/client.js')
const { getOauthConfig } = await import('../constants/oauth.js')
const { getOAuthHeaders } = await import('../utils/teleport/api.js')
const { default: axios } = await import('axios')
const accessToken =
opts?.getAccessToken?.() ?? getClaudeAIOAuthTokens()?.accessToken
if (!accessToken) {
logForDebugging('[bridge] No access token for session title update')
return
}
const orgUUID = await getOrganizationUUID()
if (!orgUUID) {
logForDebugging('[bridge] No org UUID for session title update')
return
}
const headers = {
...getOAuthHeaders(accessToken),
'anthropic-beta': 'ccr-byoc-2025-07-29',
'x-organization-uuid': orgUUID,
}
// Compat gateway only accepts session_* (compat/convert.go:27). v2 callers
// pass raw cse_*; retag here so all callers can pass whatever they hold.
// Idempotent for v1's session_* and bridgeMain's pre-converted compatSessionId.
const compatId = toCompatSessionId(sessionId)
const url = `${opts?.baseUrl ?? getOauthConfig().BASE_API_URL}/v1/sessions/${compatId}`
logForDebugging(`[bridge] Updating session title: ${compatId} → ${title}`)
try {
const response = await axios.patch(
url,
{ title },
{ headers, timeout: 10_000, validateStatus: s => s < 500 },
)
if (response.status === 200) {
logForDebugging(`[bridge] Session title updated successfully`)
} else {
const detail = extractErrorDetail(response.data)
logForDebugging(
`[bridge] Session title update failed with status ${response.status}${detail ? `: ${detail}` : ''}`,
)
}
} catch (err: unknown) {
logForDebugging(
`[bridge] Session title update request failed: ${errorMessage(err)}`,
)
}
}

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import {
type AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
logEvent,
} from '../services/analytics/index.js'
import { logForDebugging } from '../utils/debug.js'
import { errorMessage } from '../utils/errors.js'
import { jsonStringify } from '../utils/slowOperations.js'
const DEBUG_MSG_LIMIT = 2000
const SECRET_FIELD_NAMES = [
'session_ingress_token',
'environment_secret',
'access_token',
'secret',
'token',
]
const SECRET_PATTERN = new RegExp(
`"(${SECRET_FIELD_NAMES.join('|')})"\\s*:\\s*"([^"]*)"`,
'g',
)
const REDACT_MIN_LENGTH = 16
export function redactSecrets(s: string): string {
return s.replace(SECRET_PATTERN, (_match, field: string, value: string) => {
if (value.length < REDACT_MIN_LENGTH) {
return `"${field}":"[REDACTED]"`
}
const redacted = `${value.slice(0, 8)}...${value.slice(-4)}`
return `"${field}":"${redacted}"`
})
}
/** Truncate a string for debug logging, collapsing newlines. */
export function debugTruncate(s: string): string {
const flat = s.replace(/\n/g, '\\n')
if (flat.length <= DEBUG_MSG_LIMIT) {
return flat
}
return flat.slice(0, DEBUG_MSG_LIMIT) + `... (${flat.length} chars)`
}
/** Truncate a JSON-serializable value for debug logging. */
export function debugBody(data: unknown): string {
const raw = typeof data === 'string' ? data : jsonStringify(data)
const s = redactSecrets(raw)
if (s.length <= DEBUG_MSG_LIMIT) {
return s
}
return s.slice(0, DEBUG_MSG_LIMIT) + `... (${s.length} chars)`
}
/**
* Extract a descriptive error message from an axios error (or any error).
* For HTTP errors, appends the server's response body message if available,
* since axios's default message only includes the status code.
*/
export function describeAxiosError(err: unknown): string {
const msg = errorMessage(err)
if (err && typeof err === 'object' && 'response' in err) {
const response = (err as { response?: { data?: unknown } }).response
if (response?.data && typeof response.data === 'object') {
const data = response.data as Record<string, unknown>
const detail =
typeof data.message === 'string'
? data.message
: typeof data.error === 'object' &&
data.error &&
'message' in data.error &&
typeof (data.error as Record<string, unknown>).message ===
'string'
? (data.error as Record<string, unknown>).message
: undefined
if (detail) {
return `${msg}: ${detail}`
}
}
}
return msg
}
/**
* Extract the HTTP status code from an axios error, if present.
* Returns undefined for non-HTTP errors (e.g. network failures).
*/
export function extractHttpStatus(err: unknown): number | undefined {
if (
err &&
typeof err === 'object' &&
'response' in err &&
(err as { response?: { status?: unknown } }).response &&
typeof (err as { response: { status?: unknown } }).response.status ===
'number'
) {
return (err as { response: { status: number } }).response.status
}
return undefined
}
/**
* Pull a human-readable message out of an API error response body.
* Checks `data.message` first, then `data.error.message`.
*/
export function extractErrorDetail(data: unknown): string | undefined {
if (!data || typeof data !== 'object') return undefined
if ('message' in data && typeof data.message === 'string') {
return data.message
}
if (
'error' in data &&
data.error !== null &&
typeof data.error === 'object' &&
'message' in data.error &&
typeof data.error.message === 'string'
) {
return data.error.message
}
return undefined
}
/**
* Log a bridge init skip — debug message + `tengu_bridge_repl_skipped`
* analytics event. Centralizes the event name and the AnalyticsMetadata
* cast so call sites don't each repeat the 5-line boilerplate.
*/
export function logBridgeSkip(
reason: string,
debugMsg?: string,
v2?: boolean,
): void {
if (debugMsg) {
logForDebugging(debugMsg)
}
logEvent('tengu_bridge_repl_skipped', {
reason:
reason as AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
...(v2 !== undefined && { v2 }),
})
}

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import { z } from 'zod/v4'
import { getFeatureValue_DEPRECATED } from '../services/analytics/growthbook.js'
import { lazySchema } from '../utils/lazySchema.js'
import { lt } from '../utils/semver.js'
import { isEnvLessBridgeEnabled } from './bridgeEnabled.js'
export type EnvLessBridgeConfig = {
// withRetry — init-phase backoff (createSession, POST /bridge, recovery /bridge)
init_retry_max_attempts: number
init_retry_base_delay_ms: number
init_retry_jitter_fraction: number
init_retry_max_delay_ms: number
// axios timeout for POST /sessions, POST /bridge, POST /archive
http_timeout_ms: number
// BoundedUUIDSet ring size (echo + re-delivery dedup)
uuid_dedup_buffer_size: number
// CCRClient worker heartbeat cadence. Server TTL is 60s — 20s gives 3× margin.
heartbeat_interval_ms: number
// ±fraction of interval — per-beat jitter to spread fleet load.
heartbeat_jitter_fraction: number
// Fire proactive JWT refresh this long before expires_in. Larger buffer =
// more frequent refresh (refresh cadence ≈ expires_in - buffer).
token_refresh_buffer_ms: number
// Archive POST timeout in teardown(). Distinct from http_timeout_ms because
// gracefulShutdown races runCleanupFunctions() against a 2s cap — a 10s
// axios timeout on a slow/stalled archive burns the whole budget on a
// request that forceExit will kill anyway.
teardown_archive_timeout_ms: number
// Deadline for onConnect after transport.connect(). If neither onConnect
// nor onClose fires before this, emit tengu_bridge_repl_connect_timeout
// — the only telemetry for the ~1% of sessions that emit `started` then
// go silent (no error, no event, just nothing).
connect_timeout_ms: number
// Semver floor for the env-less bridge path. Separate from the v1
// tengu_bridge_min_version config so a v2-specific bug can force upgrades
// without blocking v1 (env-based) clients, and vice versa.
min_version: string
// When true, tell users their claude.ai app may be too old to see v2
// sessions — lets us roll the v2 bridge before the app ships the new
// session-list query.
should_show_app_upgrade_message: boolean
}
export const DEFAULT_ENV_LESS_BRIDGE_CONFIG: EnvLessBridgeConfig = {
init_retry_max_attempts: 3,
init_retry_base_delay_ms: 500,
init_retry_jitter_fraction: 0.25,
init_retry_max_delay_ms: 4000,
http_timeout_ms: 10_000,
uuid_dedup_buffer_size: 2000,
heartbeat_interval_ms: 20_000,
heartbeat_jitter_fraction: 0.1,
token_refresh_buffer_ms: 300_000,
teardown_archive_timeout_ms: 1500,
connect_timeout_ms: 15_000,
min_version: '0.0.0',
should_show_app_upgrade_message: false,
}
// Floors reject the whole object on violation (fall back to DEFAULT) rather
// than partially trusting — same defense-in-depth as pollConfig.ts.
const envLessBridgeConfigSchema = lazySchema(() =>
z.object({
init_retry_max_attempts: z.number().int().min(1).max(10).default(3),
init_retry_base_delay_ms: z.number().int().min(100).default(500),
init_retry_jitter_fraction: z.number().min(0).max(1).default(0.25),
init_retry_max_delay_ms: z.number().int().min(500).default(4000),
http_timeout_ms: z.number().int().min(2000).default(10_000),
uuid_dedup_buffer_size: z.number().int().min(100).max(50_000).default(2000),
// Server TTL is 60s. Floor 5s prevents thrash; cap 30s keeps ≥2× margin.
heartbeat_interval_ms: z
.number()
.int()
.min(5000)
.max(30_000)
.default(20_000),
// ±fraction per beat. Cap 0.5: at max interval (30s) × 1.5 = 45s worst case,
// still under the 60s TTL.
heartbeat_jitter_fraction: z.number().min(0).max(0.5).default(0.1),
// Floor 30s prevents tight-looping. Cap 30min rejects buffer-vs-delay
// semantic inversion: ops entering expires_in-5min (the *delay until
// refresh*) instead of 5min (the *buffer before expiry*) yields
// delayMs = expires_in - buffer ≈ 5min instead of ≈4h. Both are positive
// durations so .min() alone can't distinguish; .max() catches the
// inverted value since buffer ≥ 30min is nonsensical for a multi-hour JWT.
token_refresh_buffer_ms: z
.number()
.int()
.min(30_000)
.max(1_800_000)
.default(300_000),
// Cap 2000 keeps this under gracefulShutdown's 2s cleanup race — a higher
// timeout just lies to axios since forceExit kills the socket regardless.
teardown_archive_timeout_ms: z
.number()
.int()
.min(500)
.max(2000)
.default(1500),
// Observed p99 connect is ~2-3s; 15s is ~5× headroom. Floor 5s bounds
// false-positive rate under transient slowness; cap 60s bounds how long
// a truly-stalled session stays dark.
connect_timeout_ms: z.number().int().min(5_000).max(60_000).default(15_000),
min_version: z
.string()
.refine(v => {
try {
lt(v, '0.0.0')
return true
} catch {
return false
}
})
.default('0.0.0'),
should_show_app_upgrade_message: z.boolean().default(false),
}),
)
/**
* Fetch the env-less bridge timing config from GrowthBook. Read once per
* initEnvLessBridgeCore call — config is fixed for the lifetime of a bridge
* session.
*
* Uses the blocking getter (not _CACHED_MAY_BE_STALE) because /remote-control
* runs well after GrowthBook init — initializeGrowthBook() resolves instantly,
* so there's no startup penalty, and we get the fresh in-memory remoteEval
* value instead of the stale-on-first-read disk cache. The _DEPRECATED suffix
* warns against startup-path usage, which this isn't.
*/
export async function getEnvLessBridgeConfig(): Promise<EnvLessBridgeConfig> {
const raw = await getFeatureValue_DEPRECATED<unknown>(
'tengu_bridge_repl_v2_config',
DEFAULT_ENV_LESS_BRIDGE_CONFIG,
)
const parsed = envLessBridgeConfigSchema().safeParse(raw)
return parsed.success ? parsed.data : DEFAULT_ENV_LESS_BRIDGE_CONFIG
}
/**
* Returns an error message if the current CLI version is below the minimum
* required for the env-less (v2) bridge path, or null if the version is fine.
*
* v2 analogue of checkBridgeMinVersion() — reads from tengu_bridge_repl_v2_config
* instead of tengu_bridge_min_version so the two implementations can enforce
* independent floors.
*/
export async function checkEnvLessBridgeMinVersion(): Promise<string | null> {
const cfg = await getEnvLessBridgeConfig()
if (cfg.min_version && lt(MACRO.VERSION, cfg.min_version)) {
return `Your version of Claude Code (${MACRO.VERSION}) is too old for Remote Control.\nVersion ${cfg.min_version} or higher is required. Run \`claude update\` to update.`
}
return null
}
/**
* Whether to nudge users toward upgrading their claude.ai app when a
* Remote Control session starts. True only when the v2 bridge is active
* AND the should_show_app_upgrade_message config bit is set — lets us
* roll the v2 bridge before the app ships the new session-list query.
*/
export async function shouldShowAppUpgradeMessage(): Promise<boolean> {
if (!isEnvLessBridgeEnabled()) return false
const cfg = await getEnvLessBridgeConfig()
return cfg.should_show_app_upgrade_message
}

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/**
* State machine for gating message writes during an initial flush.
*
* When a bridge session starts, historical messages are flushed to the
* server via a single HTTP POST. During that flush, new messages must
* be queued to prevent them from arriving at the server interleaved
* with the historical messages.
*
* Lifecycle:
* start() → enqueue() returns true, items are queued
* end() → returns queued items for draining, enqueue() returns false
* drop() → discards queued items (permanent transport close)
* deactivate() → clears active flag without dropping items
* (transport replacement — new transport will drain)
*/
export class FlushGate<T> {
private _active = false
private _pending: T[] = []
get active(): boolean {
return this._active
}
get pendingCount(): number {
return this._pending.length
}
/** Mark flush as in-progress. enqueue() will start queuing items. */
start(): void {
this._active = true
}
/**
* End the flush and return any queued items for draining.
* Caller is responsible for sending the returned items.
*/
end(): T[] {
this._active = false
return this._pending.splice(0)
}
/**
* If flush is active, queue the items and return true.
* If flush is not active, return false (caller should send directly).
*/
enqueue(...items: T[]): boolean {
if (!this._active) return false
this._pending.push(...items)
return true
}
/**
* Discard all queued items (permanent transport close).
* Returns the number of items dropped.
*/
drop(): number {
this._active = false
const count = this._pending.length
this._pending.length = 0
return count
}
/**
* Clear the active flag without dropping queued items.
* Used when the transport is replaced (onWorkReceived) — the new
* transport's flush will drain the pending items.
*/
deactivate(): void {
this._active = false
}
}

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/**
* Resolve file_uuid attachments on inbound bridge user messages.
*
* Web composer uploads via cookie-authed /api/{org}/upload, sends file_uuid
* alongside the message. Here we fetch each via GET /api/oauth/files/{uuid}/content
* (oauth-authed, same store), write to ~/.claude/uploads/{sessionId}/, and
* return @path refs to prepend. Claude's Read tool takes it from there.
*
* Best-effort: any failure (no token, network, non-2xx, disk) logs debug and
* skips that attachment. The message still reaches Claude, just without @path.
*/
import type { ContentBlockParam } from '@anthropic-ai/sdk/resources/messages.mjs'
import axios from 'axios'
import { randomUUID } from 'crypto'
import { mkdir, writeFile } from 'fs/promises'
import { basename, join } from 'path'
import { z } from 'zod/v4'
import { getSessionId } from '../bootstrap/state.js'
import { logForDebugging } from '../utils/debug.js'
import { getClaudeConfigHomeDir } from '../utils/envUtils.js'
import { lazySchema } from '../utils/lazySchema.js'
import { getBridgeAccessToken, getBridgeBaseUrl } from './bridgeConfig.js'
const DOWNLOAD_TIMEOUT_MS = 30_000
function debug(msg: string): void {
logForDebugging(`[bridge:inbound-attach] ${msg}`)
}
const attachmentSchema = lazySchema(() =>
z.object({
file_uuid: z.string(),
file_name: z.string(),
}),
)
const attachmentsArraySchema = lazySchema(() => z.array(attachmentSchema()))
export type InboundAttachment = z.infer<ReturnType<typeof attachmentSchema>>
/** Pull file_attachments off a loosely-typed inbound message. */
export function extractInboundAttachments(msg: unknown): InboundAttachment[] {
if (typeof msg !== 'object' || msg === null || !('file_attachments' in msg)) {
return []
}
const parsed = attachmentsArraySchema().safeParse(msg.file_attachments)
return parsed.success ? parsed.data : []
}
/**
* Strip path components and keep only filename-safe chars. file_name comes
* from the network (web composer), so treat it as untrusted even though the
* composer controls it.
*/
function sanitizeFileName(name: string): string {
const base = basename(name).replace(/[^a-zA-Z0-9._-]/g, '_')
return base || 'attachment'
}
function uploadsDir(): string {
return join(getClaudeConfigHomeDir(), 'uploads', getSessionId())
}
/**
* Fetch + write one attachment. Returns the absolute path on success,
* undefined on any failure.
*/
async function resolveOne(att: InboundAttachment): Promise<string | undefined> {
const token = getBridgeAccessToken()
if (!token) {
debug('skip: no oauth token')
return undefined
}
let data: Buffer
try {
// getOauthConfig() (via getBridgeBaseUrl) throws on a non-allowlisted
// CLAUDE_CODE_CUSTOM_OAUTH_URL — keep it inside the try so a bad
// FedStart URL degrades to "no @path" instead of crashing print.ts's
// reader loop (which has no catch around the await).
const url = `${getBridgeBaseUrl()}/api/oauth/files/${encodeURIComponent(att.file_uuid)}/content`
const response = await axios.get(url, {
headers: { Authorization: `Bearer ${token}` },
responseType: 'arraybuffer',
timeout: DOWNLOAD_TIMEOUT_MS,
validateStatus: () => true,
})
if (response.status !== 200) {
debug(`fetch ${att.file_uuid} failed: status=${response.status}`)
return undefined
}
data = Buffer.from(response.data)
} catch (e) {
debug(`fetch ${att.file_uuid} threw: ${e}`)
return undefined
}
// uuid-prefix makes collisions impossible across messages and within one
// (same filename, different files). 8 chars is enough — this isn't security.
const safeName = sanitizeFileName(att.file_name)
const prefix = (
att.file_uuid.slice(0, 8) || randomUUID().slice(0, 8)
).replace(/[^a-zA-Z0-9_-]/g, '_')
const dir = uploadsDir()
const outPath = join(dir, `${prefix}-${safeName}`)
try {
await mkdir(dir, { recursive: true })
await writeFile(outPath, data)
} catch (e) {
debug(`write ${outPath} failed: ${e}`)
return undefined
}
debug(`resolved ${att.file_uuid} → ${outPath} (${data.length} bytes)`)
return outPath
}
/**
* Resolve all attachments on an inbound message to a prefix string of
* @path refs. Empty string if none resolved.
*/
export async function resolveInboundAttachments(
attachments: InboundAttachment[],
): Promise<string> {
if (attachments.length === 0) return ''
debug(`resolving ${attachments.length} attachment(s)`)
const paths = await Promise.all(attachments.map(resolveOne))
const ok = paths.filter((p): p is string => p !== undefined)
if (ok.length === 0) return ''
// Quoted form — extractAtMentionedFiles truncates unquoted @refs at the
// first space, which breaks any home dir with spaces (/Users/John Smith/).
return ok.map(p => `@"${p}"`).join(' ') + ' '
}
/**
* Prepend @path refs to content, whichever form it's in.
* Targets the LAST text block — processUserInputBase reads inputString
* from processedBlocks[processedBlocks.length - 1], so putting refs in
* block[0] means they're silently ignored for [text, image] content.
*/
export function prependPathRefs(
content: string | Array<ContentBlockParam>,
prefix: string,
): string | Array<ContentBlockParam> {
if (!prefix) return content
if (typeof content === 'string') return prefix + content
const i = content.findLastIndex(b => b.type === 'text')
if (i !== -1) {
const b = content[i]!
if (b.type === 'text') {
return [
...content.slice(0, i),
{ ...b, text: prefix + b.text },
...content.slice(i + 1),
]
}
}
// No text block — append one at the end so it's last.
return [...content, { type: 'text', text: prefix.trimEnd() }]
}
/**
* Convenience: extract + resolve + prepend. No-op when the message has no
* file_attachments field (fast path — no network, returns same reference).
*/
export async function resolveAndPrepend(
msg: unknown,
content: string | Array<ContentBlockParam>,
): Promise<string | Array<ContentBlockParam>> {
const attachments = extractInboundAttachments(msg)
if (attachments.length === 0) return content
const prefix = await resolveInboundAttachments(attachments)
return prependPathRefs(content, prefix)
}

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import type {
Base64ImageSource,
ContentBlockParam,
ImageBlockParam,
} from '@anthropic-ai/sdk/resources/messages.mjs'
import type { UUID } from 'crypto'
import type { SDKMessage } from '../entrypoints/agentSdkTypes.js'
import { detectImageFormatFromBase64 } from '../utils/imageResizer.js'
/**
* Process an inbound user message from the bridge, extracting content
* and UUID for enqueueing. Supports both string content and
* ContentBlockParam[] (e.g. messages containing images).
*
* Normalizes image blocks from bridge clients that may use camelCase
* `mediaType` instead of snake_case `media_type` (mobile-apps#5825).
*
* Returns the extracted fields, or undefined if the message should be
* skipped (non-user type, missing/empty content).
*/
export function extractInboundMessageFields(
msg: SDKMessage,
):
| { content: string | Array<ContentBlockParam>; uuid: UUID | undefined }
| undefined {
if (msg.type !== 'user') return undefined
const content = msg.message?.content
if (!content) return undefined
if (Array.isArray(content) && content.length === 0) return undefined
const uuid =
'uuid' in msg && typeof msg.uuid === 'string'
? (msg.uuid as UUID)
: undefined
return {
content: Array.isArray(content) ? normalizeImageBlocks(content) : content,
uuid,
}
}
/**
* Normalize image content blocks from bridge clients. iOS/web clients may
* send `mediaType` (camelCase) instead of `media_type` (snake_case), or
* omit the field entirely. Without normalization, the bad block poisons
* the session — every subsequent API call fails with
* "media_type: Field required".
*
* Fast-path scan returns the original array reference when no
* normalization is needed (zero allocation on the happy path).
*/
export function normalizeImageBlocks(
blocks: Array<ContentBlockParam>,
): Array<ContentBlockParam> {
if (!blocks.some(isMalformedBase64Image)) return blocks
return blocks.map(block => {
if (!isMalformedBase64Image(block)) return block
const src = block.source as unknown as Record<string, unknown>
const mediaType =
typeof src.mediaType === 'string' && src.mediaType
? src.mediaType
: detectImageFormatFromBase64(block.source.data)
return {
...block,
source: {
type: 'base64' as const,
media_type: mediaType as Base64ImageSource['media_type'],
data: block.source.data,
},
}
})
}
function isMalformedBase64Image(
block: ContentBlockParam,
): block is ImageBlockParam & { source: Base64ImageSource } {
if (block.type !== 'image' || block.source?.type !== 'base64') return false
return !(block.source as unknown as Record<string, unknown>).media_type
}

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/**
* REPL-specific wrapper around initBridgeCore. Owns the parts that read
* bootstrap state — gates, cwd, session ID, git context, OAuth, title
* derivation — then delegates to the bootstrap-free core.
*
* Split out of replBridge.ts because the sessionStorage import
* (getCurrentSessionTitle) transitively pulls in src/commands.ts → the
* entire slash command + React component tree (~1300 modules). Keeping
* initBridgeCore in a file that doesn't touch sessionStorage lets
* daemonBridge.ts import the core without bloating the Agent SDK bundle.
*
* Called via dynamic import by useReplBridge (auto-start) and print.ts
* (SDK -p mode via query.enableRemoteControl).
*/
import { feature } from 'bun:bundle'
import { hostname } from 'os'
import { getOriginalCwd, getSessionId } from '../bootstrap/state.js'
import type { SDKMessage } from '../entrypoints/agentSdkTypes.js'
import type { SDKControlResponse } from '../entrypoints/sdk/controlTypes.js'
import { getFeatureValue_CACHED_WITH_REFRESH } from '../services/analytics/growthbook.js'
import { getOrganizationUUID } from '../services/oauth/client.js'
import {
isPolicyAllowed,
waitForPolicyLimitsToLoad,
} from '../services/policyLimits/index.js'
import type { Message } from '../types/message.js'
import {
checkAndRefreshOAuthTokenIfNeeded,
getClaudeAIOAuthTokens,
handleOAuth401Error,
} from '../utils/auth.js'
import { getGlobalConfig, saveGlobalConfig } from '../utils/config.js'
import { logForDebugging } from '../utils/debug.js'
import { stripDisplayTagsAllowEmpty } from '../utils/displayTags.js'
import { errorMessage } from '../utils/errors.js'
import { getBranch, getRemoteUrl } from '../utils/git.js'
import { toSDKMessages } from '../utils/messages/mappers.js'
import {
getContentText,
getMessagesAfterCompactBoundary,
isSyntheticMessage,
} from '../utils/messages.js'
import type { PermissionMode } from '../utils/permissions/PermissionMode.js'
import { getCurrentSessionTitle } from '../utils/sessionStorage.js'
import {
extractConversationText,
generateSessionTitle,
} from '../utils/sessionTitle.js'
import { generateShortWordSlug } from '../utils/words.js'
import {
getBridgeAccessToken,
getBridgeBaseUrl,
getBridgeTokenOverride,
} from './bridgeConfig.js'
import {
checkBridgeMinVersion,
isBridgeEnabledBlocking,
isCseShimEnabled,
isEnvLessBridgeEnabled,
} from './bridgeEnabled.js'
import {
archiveBridgeSession,
createBridgeSession,
updateBridgeSessionTitle,
} from './createSession.js'
import { logBridgeSkip } from './debugUtils.js'
import { checkEnvLessBridgeMinVersion } from './envLessBridgeConfig.js'
import { getPollIntervalConfig } from './pollConfig.js'
import type { BridgeState, ReplBridgeHandle } from './replBridge.js'
import { initBridgeCore } from './replBridge.js'
import { setCseShimGate } from './sessionIdCompat.js'
import type { BridgeWorkerType } from './types.js'
export type InitBridgeOptions = {
onInboundMessage?: (msg: SDKMessage) => void | Promise<void>
onPermissionResponse?: (response: SDKControlResponse) => void
onInterrupt?: () => void
onSetModel?: (model: string | undefined) => void
onSetMaxThinkingTokens?: (maxTokens: number | null) => void
onSetPermissionMode?: (
mode: PermissionMode,
) => { ok: true } | { ok: false; error: string }
onStateChange?: (state: BridgeState, detail?: string) => void
initialMessages?: Message[]
// Explicit session name from `/remote-control <name>`. When set, overrides
// the title derived from the conversation or /rename.
initialName?: string
// Fresh view of the full conversation at call time. Used by onUserMessage's
// count-3 derivation to call generateSessionTitle over the full conversation.
// Optional — print.ts's SDK enableRemoteControl path has no REPL message
// array; count-3 falls back to the single message text when absent.
getMessages?: () => Message[]
// UUIDs already flushed in a prior bridge session. Messages with these
// UUIDs are excluded from the initial flush to avoid poisoning the
// server (duplicate UUIDs across sessions cause the WS to be killed).
// Mutated in place — newly flushed UUIDs are added after each flush.
previouslyFlushedUUIDs?: Set<string>
/** See BridgeCoreParams.perpetual. */
perpetual?: boolean
/**
* When true, the bridge only forwards events outbound (no SSE inbound
* stream). Used by CCR mirror mode — local sessions visible on claude.ai
* without enabling inbound control.
*/
outboundOnly?: boolean
tags?: string[]
}
export async function initReplBridge(
options?: InitBridgeOptions,
): Promise<ReplBridgeHandle | null> {
const {
onInboundMessage,
onPermissionResponse,
onInterrupt,
onSetModel,
onSetMaxThinkingTokens,
onSetPermissionMode,
onStateChange,
initialMessages,
getMessages,
previouslyFlushedUUIDs,
initialName,
perpetual,
outboundOnly,
tags,
} = options ?? {}
// Wire the cse_ shim kill switch so toCompatSessionId respects the
// GrowthBook gate. Daemon/SDK paths skip this — shim defaults to active.
setCseShimGate(isCseShimEnabled)
// 1. Runtime gate
if (!(await isBridgeEnabledBlocking())) {
logBridgeSkip('not_enabled', '[bridge:repl] Skipping: bridge not enabled')
return null
}
// 1b. Minimum version check — deferred to after the v1/v2 branch below,
// since each implementation has its own floor (tengu_bridge_min_version
// for v1, tengu_bridge_repl_v2_config.min_version for v2).
// 2. Check OAuth — must be signed in with claude.ai. Runs before the
// policy check so console-auth users get the actionable "/login" hint
// instead of a misleading policy error from a stale/wrong-org cache.
if (!getBridgeAccessToken()) {
logBridgeSkip('no_oauth', '[bridge:repl] Skipping: no OAuth tokens')
onStateChange?.('failed', '/login')
return null
}
// 3. Check organization policy — remote control may be disabled
await waitForPolicyLimitsToLoad()
if (!isPolicyAllowed('allow_remote_control')) {
logBridgeSkip(
'policy_denied',
'[bridge:repl] Skipping: allow_remote_control policy not allowed',
)
onStateChange?.('failed', "disabled by your organization's policy")
return null
}
// When CLAUDE_BRIDGE_OAUTH_TOKEN is set (ant-only local dev), the bridge
// uses that token directly via getBridgeAccessToken() — keychain state is
// irrelevant. Skip 2b/2c to preserve that decoupling: an expired keychain
// token shouldn't block a bridge connection that doesn't use it.
if (!getBridgeTokenOverride()) {
// 2a. Cross-process backoff. If N prior processes already saw this exact
// dead token (matched by expiresAt), skip silently — no event, no refresh
// attempt. The count threshold tolerates transient refresh failures (auth
// server 5xx, lockfile errors per auth.ts:1437/1444/1485): each process
// independently retries until 3 consecutive failures prove the token dead.
// Mirrors useReplBridge's MAX_CONSECUTIVE_INIT_FAILURES for in-process.
// The expiresAt key is content-addressed: /login → new token → new expiresAt
// → this stops matching without any explicit clear.
const cfg = getGlobalConfig()
if (
cfg.bridgeOauthDeadExpiresAt != null &&
(cfg.bridgeOauthDeadFailCount ?? 0) >= 3 &&
getClaudeAIOAuthTokens()?.expiresAt === cfg.bridgeOauthDeadExpiresAt
) {
logForDebugging(
`[bridge:repl] Skipping: cross-process backoff (dead token seen ${cfg.bridgeOauthDeadFailCount} times)`,
)
return null
}
// 2b. Proactively refresh if expired. Mirrors bridgeMain.ts:2096 — the REPL
// bridge fires at useEffect mount BEFORE any v1/messages call, making this
// usually the first OAuth request of the session. Without this, ~9% of
// registrations hit the server with a >8h-expired token → 401 → withOAuthRetry
// recovers, but the server logs a 401 we can avoid. VPN egress IPs observed
// at 30:1 401:200 when many unrelated users cluster at the 8h TTL boundary.
//
// Fresh-token cost: one memoized read + one Date.now() comparison (~µs).
// checkAndRefreshOAuthTokenIfNeeded clears its own cache in every path that
// touches the keychain (refresh success, lockfile race, throw), so no
// explicit clearOAuthTokenCache() here — that would force a blocking
// keychain spawn on the 91%+ fresh-token path.
await checkAndRefreshOAuthTokenIfNeeded()
// 2c. Skip if token is still expired post-refresh-attempt. Env-var / FD
// tokens (auth.ts:894-917) have expiresAt=null → never trip this. But a
// keychain token whose refresh token is dead (password change, org left,
// token GC'd) has expiresAt<now AND refresh just failed — the client would
// otherwise loop 401 forever: withOAuthRetry → handleOAuth401Error →
// refresh fails again → retry with same stale token → 401 again.
// Datadog 2026-03-08: single IPs generating 2,879 such 401s/day. Skip the
// guaranteed-fail API call; useReplBridge surfaces the failure.
//
// Intentionally NOT using isOAuthTokenExpired here — that has a 5-minute
// proactive-refresh buffer, which is the right heuristic for "should
// refresh soon" but wrong for "provably unusable". A token with 3min left
// + transient refresh endpoint blip (5xx/timeout/wifi-reconnect) would
// falsely trip a buffered check; the still-valid token would connect fine.
// Check actual expiry instead: past-expiry AND refresh-failed → truly dead.
const tokens = getClaudeAIOAuthTokens()
if (tokens && tokens.expiresAt !== null && tokens.expiresAt <= Date.now()) {
logBridgeSkip(
'oauth_expired_unrefreshable',
'[bridge:repl] Skipping: OAuth token expired and refresh failed (re-login required)',
)
onStateChange?.('failed', '/login')
// Persist for the next process. Increments failCount when re-discovering
// the same dead token (matched by expiresAt); resets to 1 for a different
// token. Once count reaches 3, step 2a's early-return fires and this path
// is never reached again — writes are capped at 3 per dead token.
// Local const captures the narrowed type (closure loses !==null narrowing).
const deadExpiresAt = tokens.expiresAt
saveGlobalConfig(c => ({
...c,
bridgeOauthDeadExpiresAt: deadExpiresAt,
bridgeOauthDeadFailCount:
c.bridgeOauthDeadExpiresAt === deadExpiresAt
? (c.bridgeOauthDeadFailCount ?? 0) + 1
: 1,
}))
return null
}
}
// 4. Compute baseUrl — needed by both v1 (env-based) and v2 (env-less)
// paths. Hoisted above the v2 gate so both can use it.
const baseUrl = getBridgeBaseUrl()
// 5. Derive session title. Precedence: explicit initialName → /rename
// (session storage) → last meaningful user message → generated slug.
// Cosmetic only (claude.ai session list); the model never sees it.
// Two flags: `hasExplicitTitle` (initialName or /rename — never auto-
// overwrite) vs. `hasTitle` (any title, including auto-derived — blocks
// the count-1 re-derivation but not count-3). The onUserMessage callback
// (wired to both v1 and v2 below) derives from the 1st prompt and again
// from the 3rd so mobile/web show a title that reflects more context.
// The slug fallback (e.g. "remote-control-graceful-unicorn") makes
// auto-started sessions distinguishable in the claude.ai list before the
// first prompt.
let title = `remote-control-${generateShortWordSlug()}`
let hasTitle = false
let hasExplicitTitle = false
if (initialName) {
title = initialName
hasTitle = true
hasExplicitTitle = true
} else {
const sessionId = getSessionId()
const customTitle = sessionId
? getCurrentSessionTitle(sessionId)
: undefined
if (customTitle) {
title = customTitle
hasTitle = true
hasExplicitTitle = true
} else if (initialMessages && initialMessages.length > 0) {
// Find the last user message that has meaningful content. Skip meta
// (nudges), tool results, compact summaries ("This session is being
// continued…"), non-human origins (task notifications, channel pushes),
// and synthetic interrupts ([Request interrupted by user]) — none are
// human-authored. Same filter as extractTitleText + isSyntheticMessage.
for (let i = initialMessages.length - 1; i >= 0; i--) {
const msg = initialMessages[i]!
if (
msg.type !== 'user' ||
msg.isMeta ||
msg.toolUseResult ||
msg.isCompactSummary ||
(msg.origin && msg.origin.kind !== 'human') ||
isSyntheticMessage(msg)
)
continue
const rawContent = getContentText(msg.message.content)
if (!rawContent) continue
const derived = deriveTitle(rawContent)
if (!derived) continue
title = derived
hasTitle = true
break
}
}
}
// Shared by both v1 and v2 — fires on every title-worthy user message until
// it returns true. At count 1: deriveTitle placeholder immediately, then
// generateSessionTitle (Haiku, sentence-case) fire-and-forget upgrade. At
// count 3: re-generate over the full conversation. Skips entirely if the
// title is explicit (/remote-control <name> or /rename) — re-checks
// sessionStorage at call time so /rename between messages isn't clobbered.
// Skips count 1 if initialMessages already derived (that title is fresh);
// still refreshes at count 3. v2 passes cse_*; updateBridgeSessionTitle
// retags internally.
let userMessageCount = 0
let lastBridgeSessionId: string | undefined
let genSeq = 0
const patch = (
derived: string,
bridgeSessionId: string,
atCount: number,
): void => {
hasTitle = true
title = derived
logForDebugging(
`[bridge:repl] derived title from message ${atCount}: ${derived}`,
)
void updateBridgeSessionTitle(bridgeSessionId, derived, {
baseUrl,
getAccessToken: getBridgeAccessToken,
}).catch(() => {})
}
// Fire-and-forget Haiku generation with post-await guards. Re-checks /rename
// (sessionStorage), v1 env-lost (lastBridgeSessionId), and same-session
// out-of-order resolution (genSeq — count-1's Haiku resolving after count-3
// would clobber the richer title). generateSessionTitle never rejects.
const generateAndPatch = (input: string, bridgeSessionId: string): void => {
const gen = ++genSeq
const atCount = userMessageCount
void generateSessionTitle(input, AbortSignal.timeout(15_000)).then(
generated => {
if (
generated &&
gen === genSeq &&
lastBridgeSessionId === bridgeSessionId &&
!getCurrentSessionTitle(getSessionId())
) {
patch(generated, bridgeSessionId, atCount)
}
},
)
}
const onUserMessage = (text: string, bridgeSessionId: string): boolean => {
if (hasExplicitTitle || getCurrentSessionTitle(getSessionId())) {
return true
}
// v1 env-lost re-creates the session with a new ID. Reset the count so
// the new session gets its own count-3 derivation; hasTitle stays true
// (new session was created via getCurrentTitle(), which reads the count-1
// title from this closure), so count-1 of the fresh cycle correctly skips.
if (
lastBridgeSessionId !== undefined &&
lastBridgeSessionId !== bridgeSessionId
) {
userMessageCount = 0
}
lastBridgeSessionId = bridgeSessionId
userMessageCount++
if (userMessageCount === 1 && !hasTitle) {
const placeholder = deriveTitle(text)
if (placeholder) patch(placeholder, bridgeSessionId, userMessageCount)
generateAndPatch(text, bridgeSessionId)
} else if (userMessageCount === 3) {
const msgs = getMessages?.()
const input = msgs
? extractConversationText(getMessagesAfterCompactBoundary(msgs))
: text
generateAndPatch(input, bridgeSessionId)
}
// Also re-latches if v1 env-lost resets the transport's done flag past 3.
return userMessageCount >= 3
}
const initialHistoryCap = getFeatureValue_CACHED_WITH_REFRESH(
'tengu_bridge_initial_history_cap',
200,
5 * 60 * 1000,
)
// Fetch orgUUID before the v1/v2 branch — both paths need it. v1 for
// environment registration; v2 for archive (which lives at the compat
// /v1/sessions/{id}/archive, not /v1/code/sessions). Without it, v2
// archive 404s and sessions stay alive in CCR after /exit.
const orgUUID = await getOrganizationUUID()
if (!orgUUID) {
logBridgeSkip('no_org_uuid', '[bridge:repl] Skipping: no org UUID')
onStateChange?.('failed', '/login')
return null
}
// ── GrowthBook gate: env-less bridge ──────────────────────────────────
// When enabled, skips the Environments API layer entirely (no register/
// poll/ack/heartbeat) and connects directly via POST /bridge → worker_jwt.
// See server PR #292605 (renamed in #293280). REPL-only — daemon/print stay
// on env-based.
//
// NAMING: "env-less" is distinct from "CCR v2" (the /worker/* transport).
// The env-based path below can ALSO use CCR v2 via CLAUDE_CODE_USE_CCR_V2.
// tengu_bridge_repl_v2 gates env-less (no poll loop), not transport version.
//
// perpetual (assistant-mode session continuity via bridge-pointer.json) is
// env-coupled and not yet implemented here — fall back to env-based when set
// so KAIROS users don't silently lose cross-restart continuity.
if (isEnvLessBridgeEnabled() && !perpetual) {
const versionError = await checkEnvLessBridgeMinVersion()
if (versionError) {
logBridgeSkip(
'version_too_old',
`[bridge:repl] Skipping: ${versionError}`,
true,
)
onStateChange?.('failed', 'run `claude update` to upgrade')
return null
}
logForDebugging(
'[bridge:repl] Using env-less bridge path (tengu_bridge_repl_v2)',
)
const { initEnvLessBridgeCore } = await import('./remoteBridgeCore.js')
return initEnvLessBridgeCore({
baseUrl,
orgUUID,
title,
getAccessToken: getBridgeAccessToken,
onAuth401: handleOAuth401Error,
toSDKMessages,
initialHistoryCap,
initialMessages,
// v2 always creates a fresh server session (new cse_* id), so
// previouslyFlushedUUIDs is not passed — there's no cross-session
// UUID collision risk, and the ref persists across enable→disable→
// re-enable cycles which would cause the new session to receive zero
// history (all UUIDs already in the set from the prior enable).
// v1 handles this by calling previouslyFlushedUUIDs.clear() on fresh
// session creation (replBridge.ts:768); v2 skips the param entirely.
onInboundMessage,
onUserMessage,
onPermissionResponse,
onInterrupt,
onSetModel,
onSetMaxThinkingTokens,
onSetPermissionMode,
onStateChange,
outboundOnly,
tags,
})
}
// ── v1 path: env-based (register/poll/ack/heartbeat) ──────────────────
const versionError = checkBridgeMinVersion()
if (versionError) {
logBridgeSkip('version_too_old', `[bridge:repl] Skipping: ${versionError}`)
onStateChange?.('failed', 'run `claude update` to upgrade')
return null
}
// Gather git context — this is the bootstrap-read boundary.
// Everything from here down is passed explicitly to bridgeCore.
const branch = await getBranch()
const gitRepoUrl = await getRemoteUrl()
const sessionIngressUrl =
process.env.USER_TYPE === 'ant' &&
process.env.CLAUDE_BRIDGE_SESSION_INGRESS_URL
? process.env.CLAUDE_BRIDGE_SESSION_INGRESS_URL
: baseUrl
// Assistant-mode sessions advertise a distinct worker_type so the web UI
// can filter them into a dedicated picker. KAIROS guard keeps the
// assistant module out of external builds entirely.
let workerType: BridgeWorkerType = 'claude_code'
if (feature('KAIROS')) {
/* eslint-disable @typescript-eslint/no-require-imports */
const { isAssistantMode } =
require('../assistant/index.js') as typeof import('../assistant/index.js')
/* eslint-enable @typescript-eslint/no-require-imports */
if (isAssistantMode()) {
workerType = 'claude_code_assistant'
}
}
// 6. Delegate. BridgeCoreHandle is a structural superset of
// ReplBridgeHandle (adds writeSdkMessages which REPL callers don't use),
// so no adapter needed — just the narrower type on the way out.
return initBridgeCore({
dir: getOriginalCwd(),
machineName: hostname(),
branch,
gitRepoUrl,
title,
baseUrl,
sessionIngressUrl,
workerType,
getAccessToken: getBridgeAccessToken,
createSession: opts =>
createBridgeSession({
...opts,
events: [],
baseUrl,
getAccessToken: getBridgeAccessToken,
}),
archiveSession: sessionId =>
archiveBridgeSession(sessionId, {
baseUrl,
getAccessToken: getBridgeAccessToken,
// gracefulShutdown.ts:407 races runCleanupFunctions against 2s.
// Teardown also does stopWork (parallel) + deregister (sequential),
// so archive can't have the full budget. 1.5s matches v2's
// teardown_archive_timeout_ms default.
timeoutMs: 1500,
}).catch((err: unknown) => {
// archiveBridgeSession has no try/catch — 5xx/timeout/network throw
// straight through. Previously swallowed silently, making archive
// failures BQ-invisible and undiagnosable from debug logs.
logForDebugging(
`[bridge:repl] archiveBridgeSession threw: ${errorMessage(err)}`,
{ level: 'error' },
)
}),
// getCurrentTitle is read on reconnect-after-env-lost to re-title the new
// session. /rename writes to session storage; onUserMessage mutates
// `title` directly — both paths are picked up here.
getCurrentTitle: () => getCurrentSessionTitle(getSessionId()) ?? title,
onUserMessage,
toSDKMessages,
onAuth401: handleOAuth401Error,
getPollIntervalConfig,
initialHistoryCap,
initialMessages,
previouslyFlushedUUIDs,
onInboundMessage,
onPermissionResponse,
onInterrupt,
onSetModel,
onSetMaxThinkingTokens,
onSetPermissionMode,
onStateChange,
perpetual,
})
}
const TITLE_MAX_LEN = 50
/**
* Quick placeholder title: strip display tags, take the first sentence,
* collapse whitespace, truncate to 50 chars. Returns undefined if the result
* is empty (e.g. message was only <local-command-stdout>). Replaced by
* generateSessionTitle once Haiku resolves (~1-15s).
*/
function deriveTitle(raw: string): string | undefined {
// Strip <ide_opened_file>, <session-start-hook>, etc. — these appear in
// user messages when IDE/hooks inject context. stripDisplayTagsAllowEmpty
// returns '' (not the original) so pure-tag messages are skipped.
const clean = stripDisplayTagsAllowEmpty(raw)
// First sentence is usually the intent; rest is often context/detail.
// Capture group instead of lookbehind — keeps YARR JIT happy.
const firstSentence = /^(.*?[.!?])\s/.exec(clean)?.[1] ?? clean
// Collapse newlines/tabs — titles are single-line in the claude.ai list.
const flat = firstSentence.replace(/\s+/g, ' ').trim()
if (!flat) return undefined
return flat.length > TITLE_MAX_LEN
? flat.slice(0, TITLE_MAX_LEN - 1) + '\u2026'
: flat
}

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import { logEvent } from '../services/analytics/index.js'
import { logForDebugging } from '../utils/debug.js'
import { logForDiagnosticsNoPII } from '../utils/diagLogs.js'
import { errorMessage } from '../utils/errors.js'
import { jsonParse } from '../utils/slowOperations.js'
/** Format a millisecond duration as a human-readable string (e.g. "5m 30s"). */
function formatDuration(ms: number): string {
if (ms < 60_000) return `${Math.round(ms / 1000)}s`
const m = Math.floor(ms / 60_000)
const s = Math.round((ms % 60_000) / 1000)
return s > 0 ? `${m}m ${s}s` : `${m}m`
}
/**
* Decode a JWT's payload segment without verifying the signature.
* Strips the `sk-ant-si-` session-ingress prefix if present.
* Returns the parsed JSON payload as `unknown`, or `null` if the
* token is malformed or the payload is not valid JSON.
*/
export function decodeJwtPayload(token: string): unknown | null {
const jwt = token.startsWith('sk-ant-si-')
? token.slice('sk-ant-si-'.length)
: token
const parts = jwt.split('.')
if (parts.length !== 3 || !parts[1]) return null
try {
return jsonParse(Buffer.from(parts[1], 'base64url').toString('utf8'))
} catch {
return null
}
}
/**
* Decode the `exp` (expiry) claim from a JWT without verifying the signature.
* @returns The `exp` value in Unix seconds, or `null` if unparseable
*/
export function decodeJwtExpiry(token: string): number | null {
const payload = decodeJwtPayload(token)
if (
payload !== null &&
typeof payload === 'object' &&
'exp' in payload &&
typeof payload.exp === 'number'
) {
return payload.exp
}
return null
}
/** Refresh buffer: request a new token before expiry. */
const TOKEN_REFRESH_BUFFER_MS = 5 * 60 * 1000
/** Fallback refresh interval when the new token's expiry is unknown. */
const FALLBACK_REFRESH_INTERVAL_MS = 30 * 60 * 1000 // 30 minutes
/** Max consecutive failures before giving up on the refresh chain. */
const MAX_REFRESH_FAILURES = 3
/** Retry delay when getAccessToken returns undefined. */
const REFRESH_RETRY_DELAY_MS = 60_000
/**
* Creates a token refresh scheduler that proactively refreshes session tokens
* before they expire. Used by both the standalone bridge and the REPL bridge.
*
* When a token is about to expire, the scheduler calls `onRefresh` with the
* session ID and the bridge's OAuth access token. The caller is responsible
* for delivering the token to the appropriate transport (child process stdin
* for standalone bridge, WebSocket reconnect for REPL bridge).
*/
export function createTokenRefreshScheduler({
getAccessToken,
onRefresh,
label,
refreshBufferMs = TOKEN_REFRESH_BUFFER_MS,
}: {
getAccessToken: () => string | undefined | Promise<string | undefined>
onRefresh: (sessionId: string, oauthToken: string) => void
label: string
/** How long before expiry to fire refresh. Defaults to 5 min. */
refreshBufferMs?: number
}): {
schedule: (sessionId: string, token: string) => void
scheduleFromExpiresIn: (sessionId: string, expiresInSeconds: number) => void
cancel: (sessionId: string) => void
cancelAll: () => void
} {
const timers = new Map<string, ReturnType<typeof setTimeout>>()
const failureCounts = new Map<string, number>()
// Generation counter per session — incremented by schedule() and cancel()
// so that in-flight async doRefresh() calls can detect when they've been
// superseded and should skip setting follow-up timers.
const generations = new Map<string, number>()
function nextGeneration(sessionId: string): number {
const gen = (generations.get(sessionId) ?? 0) + 1
generations.set(sessionId, gen)
return gen
}
function schedule(sessionId: string, token: string): void {
const expiry = decodeJwtExpiry(token)
if (!expiry) {
// Token is not a decodable JWT (e.g. an OAuth token passed from the
// REPL bridge WebSocket open handler). Preserve any existing timer
// (such as the follow-up refresh set by doRefresh) so the refresh
// chain is not broken.
logForDebugging(
`[${label}:token] Could not decode JWT expiry for sessionId=${sessionId}, token prefix=${token.slice(0, 15)}…, keeping existing timer`,
)
return
}
// Clear any existing refresh timer — we have a concrete expiry to replace it.
const existing = timers.get(sessionId)
if (existing) {
clearTimeout(existing)
}
// Bump generation to invalidate any in-flight async doRefresh.
const gen = nextGeneration(sessionId)
const expiryDate = new Date(expiry * 1000).toISOString()
const delayMs = expiry * 1000 - Date.now() - refreshBufferMs
if (delayMs <= 0) {
logForDebugging(
`[${label}:token] Token for sessionId=${sessionId} expires=${expiryDate} (past or within buffer), refreshing immediately`,
)
void doRefresh(sessionId, gen)
return
}
logForDebugging(
`[${label}:token] Scheduled token refresh for sessionId=${sessionId} in ${formatDuration(delayMs)} (expires=${expiryDate}, buffer=${refreshBufferMs / 1000}s)`,
)
const timer = setTimeout(doRefresh, delayMs, sessionId, gen)
timers.set(sessionId, timer)
}
/**
* Schedule refresh using an explicit TTL (seconds until expiry) rather
* than decoding a JWT's exp claim. Used by callers whose JWT is opaque
* (e.g. POST /v1/code/sessions/{id}/bridge returns expires_in directly).
*/
function scheduleFromExpiresIn(
sessionId: string,
expiresInSeconds: number,
): void {
const existing = timers.get(sessionId)
if (existing) clearTimeout(existing)
const gen = nextGeneration(sessionId)
// Clamp to 30s floor — if refreshBufferMs exceeds the server's expires_in
// (e.g. very large buffer for frequent-refresh testing, or server shortens
// expires_in unexpectedly), unclamped delayMs ≤ 0 would tight-loop.
const delayMs = Math.max(expiresInSeconds * 1000 - refreshBufferMs, 30_000)
logForDebugging(
`[${label}:token] Scheduled token refresh for sessionId=${sessionId} in ${formatDuration(delayMs)} (expires_in=${expiresInSeconds}s, buffer=${refreshBufferMs / 1000}s)`,
)
const timer = setTimeout(doRefresh, delayMs, sessionId, gen)
timers.set(sessionId, timer)
}
async function doRefresh(sessionId: string, gen: number): Promise<void> {
let oauthToken: string | undefined
try {
oauthToken = await getAccessToken()
} catch (err) {
logForDebugging(
`[${label}:token] getAccessToken threw for sessionId=${sessionId}: ${errorMessage(err)}`,
{ level: 'error' },
)
}
// If the session was cancelled or rescheduled while we were awaiting,
// the generation will have changed — bail out to avoid orphaned timers.
if (generations.get(sessionId) !== gen) {
logForDebugging(
`[${label}:token] doRefresh for sessionId=${sessionId} stale (gen ${gen} vs ${generations.get(sessionId)}), skipping`,
)
return
}
if (!oauthToken) {
const failures = (failureCounts.get(sessionId) ?? 0) + 1
failureCounts.set(sessionId, failures)
logForDebugging(
`[${label}:token] No OAuth token available for refresh, sessionId=${sessionId} (failure ${failures}/${MAX_REFRESH_FAILURES})`,
{ level: 'error' },
)
logForDiagnosticsNoPII('error', 'bridge_token_refresh_no_oauth')
// Schedule a retry so the refresh chain can recover if the token
// becomes available again (e.g. transient cache clear during refresh).
// Cap retries to avoid spamming on genuine failures.
if (failures < MAX_REFRESH_FAILURES) {
const retryTimer = setTimeout(
doRefresh,
REFRESH_RETRY_DELAY_MS,
sessionId,
gen,
)
timers.set(sessionId, retryTimer)
}
return
}
// Reset failure counter on successful token retrieval
failureCounts.delete(sessionId)
logForDebugging(
`[${label}:token] Refreshing token for sessionId=${sessionId}: new token prefix=${oauthToken.slice(0, 15)}…`,
)
logEvent('tengu_bridge_token_refreshed', {})
onRefresh(sessionId, oauthToken)
// Schedule a follow-up refresh so long-running sessions stay authenticated.
// Without this, the initial one-shot timer leaves the session vulnerable
// to token expiry if it runs past the first refresh window.
const timer = setTimeout(
doRefresh,
FALLBACK_REFRESH_INTERVAL_MS,
sessionId,
gen,
)
timers.set(sessionId, timer)
logForDebugging(
`[${label}:token] Scheduled follow-up refresh for sessionId=${sessionId} in ${formatDuration(FALLBACK_REFRESH_INTERVAL_MS)}`,
)
}
function cancel(sessionId: string): void {
// Bump generation to invalidate any in-flight async doRefresh.
nextGeneration(sessionId)
const timer = timers.get(sessionId)
if (timer) {
clearTimeout(timer)
timers.delete(sessionId)
}
failureCounts.delete(sessionId)
}
function cancelAll(): void {
// Bump all generations so in-flight doRefresh calls are invalidated.
for (const sessionId of generations.keys()) {
nextGeneration(sessionId)
}
for (const timer of timers.values()) {
clearTimeout(timer)
}
timers.clear()
failureCounts.clear()
}
return { schedule, scheduleFromExpiresIn, cancel, cancelAll }
}

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export function listPeerSessions() {
return []
}

110
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import { z } from 'zod/v4'
import { getFeatureValue_CACHED_WITH_REFRESH } from '../services/analytics/growthbook.js'
import { lazySchema } from '../utils/lazySchema.js'
import {
DEFAULT_POLL_CONFIG,
type PollIntervalConfig,
} from './pollConfigDefaults.js'
// .min(100) on the seek-work intervals restores the old Math.max(..., 100)
// defense-in-depth floor against fat-fingered GrowthBook values. Unlike a
// clamp, Zod rejects the whole object on violation — a config with one bad
// field falls back to DEFAULT_POLL_CONFIG entirely rather than being
// partially trusted.
//
// The at_capacity intervals use a 0-or-≥100 refinement: 0 means "disabled"
// (heartbeat-only mode), ≥100 is the fat-finger floor. Values 1–99 are
// rejected so unit confusion (ops thinks seconds, enters 10) doesn't poll
// every 10ms against the VerifyEnvironmentSecretAuth DB path.
//
// The object-level refines require at least one at-capacity liveness
// mechanism enabled: heartbeat OR the relevant poll interval. Without this,
// the hb=0, atCapMs=0 drift config (ops disables heartbeat without
// restoring at_capacity) falls through every throttle site with no sleep —
// tight-looping /poll at HTTP-round-trip speed.
const zeroOrAtLeast100 = {
message: 'must be 0 (disabled) or ≥100ms',
}
const pollIntervalConfigSchema = lazySchema(() =>
z
.object({
poll_interval_ms_not_at_capacity: z.number().int().min(100),
// 0 = no at-capacity polling. Independent of heartbeat — both can be
// enabled (heartbeat runs, periodically breaks out to poll).
poll_interval_ms_at_capacity: z
.number()
.int()
.refine(v => v === 0 || v >= 100, zeroOrAtLeast100),
// 0 = disabled; positive value = heartbeat at this interval while at
// capacity. Runs alongside at-capacity polling, not instead of it.
// Named non_exclusive to distinguish from the old heartbeat_interval_ms
// (either-or semantics in pre-#22145 clients). .default(0) so existing
// GrowthBook configs without this field parse successfully.
non_exclusive_heartbeat_interval_ms: z.number().int().min(0).default(0),
// Multisession (bridgeMain.ts) intervals. Defaults match the
// single-session values so existing configs without these fields
// preserve current behavior.
multisession_poll_interval_ms_not_at_capacity: z
.number()
.int()
.min(100)
.default(
DEFAULT_POLL_CONFIG.multisession_poll_interval_ms_not_at_capacity,
),
multisession_poll_interval_ms_partial_capacity: z
.number()
.int()
.min(100)
.default(
DEFAULT_POLL_CONFIG.multisession_poll_interval_ms_partial_capacity,
),
multisession_poll_interval_ms_at_capacity: z
.number()
.int()
.refine(v => v === 0 || v >= 100, zeroOrAtLeast100)
.default(DEFAULT_POLL_CONFIG.multisession_poll_interval_ms_at_capacity),
// .min(1) matches the server's ge=1 constraint (work_v1.py:230).
reclaim_older_than_ms: z.number().int().min(1).default(5000),
session_keepalive_interval_v2_ms: z
.number()
.int()
.min(0)
.default(120_000),
})
.refine(
cfg =>
cfg.non_exclusive_heartbeat_interval_ms > 0 ||
cfg.poll_interval_ms_at_capacity > 0,
{
message:
'at-capacity liveness requires non_exclusive_heartbeat_interval_ms > 0 or poll_interval_ms_at_capacity > 0',
},
)
.refine(
cfg =>
cfg.non_exclusive_heartbeat_interval_ms > 0 ||
cfg.multisession_poll_interval_ms_at_capacity > 0,
{
message:
'at-capacity liveness requires non_exclusive_heartbeat_interval_ms > 0 or multisession_poll_interval_ms_at_capacity > 0',
},
),
)
/**
* Fetch the bridge poll interval config from GrowthBook with a 5-minute
* refresh window. Validates the served JSON against the schema; falls back
* to defaults if the flag is absent, malformed, or partially-specified.
*
* Shared by bridgeMain.ts (standalone) and replBridge.ts (REPL) so ops
* can tune both poll rates fleet-wide with a single config push.
*/
export function getPollIntervalConfig(): PollIntervalConfig {
const raw = getFeatureValue_CACHED_WITH_REFRESH<unknown>(
'tengu_bridge_poll_interval_config',
DEFAULT_POLL_CONFIG,
5 * 60 * 1000,
)
const parsed = pollIntervalConfigSchema().safeParse(raw)
return parsed.success ? parsed.data : DEFAULT_POLL_CONFIG
}

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/**
* Bridge poll interval defaults. Extracted from pollConfig.ts so callers
* that don't need live GrowthBook tuning (daemon via Agent SDK) can avoid
* the growthbook.ts → config.ts → file.ts → sessionStorage.ts → commands.ts
* transitive dependency chain.
*/
/**
* Poll interval when actively seeking work (no transport / below maxSessions).
* Governs user-visible "connecting…" latency on initial work pickup and
* recovery speed after the server re-dispatches a work item.
*/
const POLL_INTERVAL_MS_NOT_AT_CAPACITY = 2000
/**
* Poll interval when the transport is connected. Runs independently of
* heartbeat — when both are enabled, the heartbeat loop breaks out to poll
* at this interval. Set to 0 to disable at-capacity polling entirely.
*
* Server-side constraints that bound this value:
* - BRIDGE_LAST_POLL_TTL = 4h (Redis key expiry → environment auto-archived)
* - max_poll_stale_seconds = 24h (session-creation health gate, currently disabled)
*
* 10 minutes gives 24× headroom on the Redis TTL while still picking up
* server-initiated token-rotation redispatches within one poll cycle.
* The transport auto-reconnects internally for 10 minutes on transient WS
* failures, so poll is not the recovery path — it's strictly a liveness
* signal plus a backstop for permanent close.
*/
const POLL_INTERVAL_MS_AT_CAPACITY = 600_000
/**
* Multisession bridge (bridgeMain.ts) poll intervals. Defaults match the
* single-session values so existing GrowthBook configs without these fields
* preserve current behavior. Ops can tune these independently via the
* tengu_bridge_poll_interval_config GB flag.
*/
const MULTISESSION_POLL_INTERVAL_MS_NOT_AT_CAPACITY =
POLL_INTERVAL_MS_NOT_AT_CAPACITY
const MULTISESSION_POLL_INTERVAL_MS_PARTIAL_CAPACITY =
POLL_INTERVAL_MS_NOT_AT_CAPACITY
const MULTISESSION_POLL_INTERVAL_MS_AT_CAPACITY = POLL_INTERVAL_MS_AT_CAPACITY
export type PollIntervalConfig = {
poll_interval_ms_not_at_capacity: number
poll_interval_ms_at_capacity: number
non_exclusive_heartbeat_interval_ms: number
multisession_poll_interval_ms_not_at_capacity: number
multisession_poll_interval_ms_partial_capacity: number
multisession_poll_interval_ms_at_capacity: number
reclaim_older_than_ms: number
session_keepalive_interval_v2_ms: number
}
export const DEFAULT_POLL_CONFIG: PollIntervalConfig = {
poll_interval_ms_not_at_capacity: POLL_INTERVAL_MS_NOT_AT_CAPACITY,
poll_interval_ms_at_capacity: POLL_INTERVAL_MS_AT_CAPACITY,
// 0 = disabled. When > 0, at-capacity loops send per-work-item heartbeats
// at this interval. Independent of poll_interval_ms_at_capacity — both may
// run (heartbeat periodically yields to poll). 60s gives 5× headroom under
// the server's 300s heartbeat TTL. Named non_exclusive to distinguish from
// the old heartbeat_interval_ms field (either-or semantics in pre-#22145
// clients — heartbeat suppressed poll). Old clients ignore this key; ops
// can set both fields during rollout.
non_exclusive_heartbeat_interval_ms: 0,
multisession_poll_interval_ms_not_at_capacity:
MULTISESSION_POLL_INTERVAL_MS_NOT_AT_CAPACITY,
multisession_poll_interval_ms_partial_capacity:
MULTISESSION_POLL_INTERVAL_MS_PARTIAL_CAPACITY,
multisession_poll_interval_ms_at_capacity:
MULTISESSION_POLL_INTERVAL_MS_AT_CAPACITY,
// Poll query param: reclaim unacknowledged work items older than this.
// Matches the server's DEFAULT_RECLAIM_OLDER_THAN_MS (work_service.py:24).
// Enables picking up stale-pending work after JWT expiry, when the prior
// ack failed because the session_ingress_token was already stale.
reclaim_older_than_ms: 5000,
// 0 = disabled. When > 0, push a silent {type:'keep_alive'} frame to
// session-ingress at this interval so upstream proxies don't GC an idle
// remote-control session. 2 min is the default. _v2: bridge-only gate
// (pre-v2 clients read the old key, new clients ignore it).
session_keepalive_interval_v2_ms: 120_000,
}

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import { updateSessionBridgeId } from '../utils/concurrentSessions.js'
import type { ReplBridgeHandle } from './replBridge.js'
import { toCompatSessionId } from './sessionIdCompat.js'
/**
* Global pointer to the active REPL bridge handle, so callers outside
* useReplBridge's React tree (tools, slash commands) can invoke handle methods
* like subscribePR. Same one-bridge-per-process justification as bridgeDebug.ts
* — the handle's closure captures the sessionId and getAccessToken that created
* the session, and re-deriving those independently (BriefTool/upload.ts pattern)
* risks staging/prod token divergence.
*
* Set from useReplBridge.tsx when init completes; cleared on teardown.
*/
let handle: ReplBridgeHandle | null = null
export function setReplBridgeHandle(h: ReplBridgeHandle | null): void {
handle = h
// Publish (or clear) our bridge session ID in the session record so other
// local peers can dedup us out of their bridge list — local is preferred.
void updateSessionBridgeId(getSelfBridgeCompatId() ?? null).catch(() => {})
}
export function getReplBridgeHandle(): ReplBridgeHandle | null {
return handle
}
/**
* Our own bridge session ID in the session_* compat format the API returns
* in /v1/sessions responses — or undefined if bridge isn't connected.
*/
export function getSelfBridgeCompatId(): string | undefined {
const h = getReplBridgeHandle()
return h ? toCompatSessionId(h.bridgeSessionId) : undefined
}

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import type { StdoutMessage } from 'src/entrypoints/sdk/controlTypes.js'
import { CCRClient } from '../cli/transports/ccrClient.js'
import type { HybridTransport } from '../cli/transports/HybridTransport.js'
import { SSETransport } from '../cli/transports/SSETransport.js'
import { logForDebugging } from '../utils/debug.js'
import { errorMessage } from '../utils/errors.js'
import { updateSessionIngressAuthToken } from '../utils/sessionIngressAuth.js'
import type { SessionState } from '../utils/sessionState.js'
import { registerWorker } from './workSecret.js'
/**
* Transport abstraction for replBridge. Covers exactly the surface that
* replBridge.ts uses against HybridTransport so the v1/v2 choice is
* confined to the construction site.
*
* - v1: HybridTransport (WS reads + POST writes to Session-Ingress)
* - v2: SSETransport (reads) + CCRClient (writes to CCR v2 /worker/*)
*
* The v2 write path goes through CCRClient.writeEvent → SerialBatchEventUploader,
* NOT through SSETransport.write() — SSETransport.write() targets the
* Session-Ingress POST URL shape, which is wrong for CCR v2.
*/
export type ReplBridgeTransport = {
write(message: StdoutMessage): Promise<void>
writeBatch(messages: StdoutMessage[]): Promise<void>
close(): void
isConnectedStatus(): boolean
getStateLabel(): string
setOnData(callback: (data: string) => void): void
setOnClose(callback: (closeCode?: number) => void): void
setOnConnect(callback: () => void): void
connect(): void
/**
* High-water mark of the underlying read stream's event sequence numbers.
* replBridge reads this before swapping transports so the new one can
* resume from where the old one left off (otherwise the server replays
* the entire session history from seq 0).
*
* v1 returns 0 — Session-Ingress WS doesn't use SSE sequence numbers;
* replay-on-reconnect is handled by the server-side message cursor.
*/
getLastSequenceNum(): number
/**
* Monotonic count of batches dropped via maxConsecutiveFailures.
* Snapshot before writeBatch() and compare after to detect silent drops
* (writeBatch() resolves normally even when batches were dropped).
* v2 returns 0 — the v2 write path doesn't set maxConsecutiveFailures.
*/
readonly droppedBatchCount: number
/**
* PUT /worker state (v2 only; v1 is a no-op). `requires_action` tells
* the backend a permission prompt is pending — claude.ai shows the
* "waiting for input" indicator. REPL/daemon callers don't need this
* (user watches the REPL locally); multi-session worker callers do.
*/
reportState(state: SessionState): void
/** PUT /worker external_metadata (v2 only; v1 is a no-op). */
reportMetadata(metadata: Record<string, unknown>): void
/**
* POST /worker/events/{id}/delivery (v2 only; v1 is a no-op). Populates
* CCR's processing_at/processed_at columns. `received` is auto-fired by
* CCRClient on every SSE frame and is not exposed here.
*/
reportDelivery(eventId: string, status: 'processing' | 'processed'): void
/**
* Drain the write queue before close() (v2 only; v1 resolves
* immediately — HybridTransport POSTs are already awaited per-write).
*/
flush(): Promise<void>
}
/**
* v1 adapter: HybridTransport already has the full surface (it extends
* WebSocketTransport which has setOnConnect + getStateLabel). This is a
* no-op wrapper that exists only so replBridge's `transport` variable
* has a single type.
*/
export function createV1ReplTransport(
hybrid: HybridTransport,
): ReplBridgeTransport {
return {
write: msg => hybrid.write(msg),
writeBatch: msgs => hybrid.writeBatch(msgs),
close: () => hybrid.close(),
isConnectedStatus: () => hybrid.isConnectedStatus(),
getStateLabel: () => hybrid.getStateLabel(),
setOnData: cb => hybrid.setOnData(cb),
setOnClose: cb => hybrid.setOnClose(cb),
setOnConnect: cb => hybrid.setOnConnect(cb),
connect: () => void hybrid.connect(),
// v1 Session-Ingress WS doesn't use SSE sequence numbers; replay
// semantics are different. Always return 0 so the seq-num carryover
// logic in replBridge is a no-op for v1.
getLastSequenceNum: () => 0,
get droppedBatchCount() {
return hybrid.droppedBatchCount
},
reportState: () => {},
reportMetadata: () => {},
reportDelivery: () => {},
flush: () => Promise.resolve(),
}
}
/**
* v2 adapter: wrap SSETransport (reads) + CCRClient (writes, heartbeat,
* state, delivery tracking).
*
* Auth: v2 endpoints validate the JWT's session_id claim (register_worker.go:32)
* and worker role (environment_auth.py:856). OAuth tokens have neither.
* This is the inverse of the v1 replBridge path, which deliberately uses OAuth.
* The JWT is refreshed when the poll loop re-dispatches work — the caller
* invokes createV2ReplTransport again with the fresh token.
*
* Registration happens here (not in the caller) so the entire v2 handshake
* is one async step. registerWorker failure propagates — replBridge will
* catch it and stay on the poll loop.
*/
export async function createV2ReplTransport(opts: {
sessionUrl: string
ingressToken: string
sessionId: string
/**
* SSE sequence-number high-water mark from the previous transport.
* Passed to the new SSETransport so its first connect() sends
* from_sequence_num / Last-Event-ID and the server resumes from where
* the old stream left off. Without this, every transport swap asks the
* server to replay the entire session history from seq 0.
*/
initialSequenceNum?: number
/**
* Worker epoch from POST /bridge response. When provided, the server
* already bumped epoch (the /bridge call IS the register — see server
* PR #293280). When omitted (v1 CCR-v2 path via replBridge.ts poll loop),
* call registerWorker as before.
*/
epoch?: number
/** CCRClient heartbeat interval. Defaults to 20s when omitted. */
heartbeatIntervalMs?: number
/** ±fraction per-beat jitter. Defaults to 0 (no jitter) when omitted. */
heartbeatJitterFraction?: number
/**
* When true, skip opening the SSE read stream — only the CCRClient write
* path is activated. Use for mirror-mode attachments that forward events
* but never receive inbound prompts or control requests.
*/
outboundOnly?: boolean
/**
* Per-instance auth header source. When provided, CCRClient + SSETransport
* read auth from this closure instead of the process-wide
* CLAUDE_CODE_SESSION_ACCESS_TOKEN env var. Required for callers managing
* multiple concurrent sessions — the env-var path stomps across sessions.
* When omitted, falls back to the env var (single-session callers).
*/
getAuthToken?: () => string | undefined
}): Promise<ReplBridgeTransport> {
const {
sessionUrl,
ingressToken,
sessionId,
initialSequenceNum,
getAuthToken,
} = opts
// Auth header builder. If getAuthToken is provided, read from it
// (per-instance, multi-session safe). Otherwise write ingressToken to
// the process-wide env var (legacy single-session path — CCRClient's
// default getAuthHeaders reads it via getSessionIngressAuthHeaders).
let getAuthHeaders: (() => Record<string, string>) | undefined
if (getAuthToken) {
getAuthHeaders = (): Record<string, string> => {
const token = getAuthToken()
if (!token) return {}
return { Authorization: `Bearer ${token}` }
}
} else {
// CCRClient.request() and SSETransport.connect() both read auth via
// getSessionIngressAuthHeaders() → this env var. Set it before either
// touches the network.
updateSessionIngressAuthToken(ingressToken)
}
const epoch = opts.epoch ?? (await registerWorker(sessionUrl, ingressToken))
logForDebugging(
`[bridge:repl] CCR v2: worker sessionId=${sessionId} epoch=${epoch}${opts.epoch !== undefined ? ' (from /bridge)' : ' (via registerWorker)'}`,
)
// Derive SSE stream URL. Same logic as transportUtils.ts:26-33 but
// starting from an http(s) base instead of a --sdk-url that might be ws://.
const sseUrl = new URL(sessionUrl)
sseUrl.pathname = sseUrl.pathname.replace(/\/$/, '') + '/worker/events/stream'
const sse = new SSETransport(
sseUrl,
{},
sessionId,
undefined,
initialSequenceNum,
getAuthHeaders,
)
let onCloseCb: ((closeCode?: number) => void) | undefined
const ccr = new CCRClient(sse, new URL(sessionUrl), {
getAuthHeaders,
heartbeatIntervalMs: opts.heartbeatIntervalMs,
heartbeatJitterFraction: opts.heartbeatJitterFraction,
// Default is process.exit(1) — correct for spawn-mode children. In-process,
// that kills the REPL. Close instead: replBridge's onClose wakes the poll
// loop, which picks up the server's re-dispatch (with fresh epoch).
onEpochMismatch: () => {
logForDebugging(
'[bridge:repl] CCR v2: epoch superseded (409) — closing for poll-loop recovery',
)
// Close resources in a try block so the throw always executes.
// If ccr.close() or sse.close() throw, we still need to unwind
// the caller (request()) — otherwise handleEpochMismatch's `never`
// return type is violated at runtime and control falls through.
try {
ccr.close()
sse.close()
onCloseCb?.(4090)
} catch (closeErr: unknown) {
logForDebugging(
`[bridge:repl] CCR v2: error during epoch-mismatch cleanup: ${errorMessage(closeErr)}`,
{ level: 'error' },
)
}
// Don't return — the calling request() code continues after the 409
// branch, so callers see the logged warning and a false return. We
// throw to unwind; the uploaders catch it as a send failure.
throw new Error('epoch superseded')
},
})
// CCRClient's constructor wired sse.setOnEvent → reportDelivery('received').
// remoteIO.ts additionally sends 'processing'/'processed' via
// setCommandLifecycleListener, which the in-process query loop fires. This
// transport's only caller (replBridge/daemonBridge) has no such wiring — the
// daemon's agent child is a separate process (ProcessTransport), and its
// notifyCommandLifecycle calls fire with listener=null in its own module
// scope. So events stay at 'received' forever, and reconnectSession re-queues
// them on every daemon restart (observed: 21→24→25 phantom prompts as
// "user sent a new message while you were working" system-reminders).
//
// Fix: ACK 'processed' immediately alongside 'received'. The window between
// SSE receipt and transcript-write is narrow (queue → SDK → child stdin →
// model); a crash there loses one prompt vs. the observed N-prompt flood on
// every restart. Overwrite the constructor's wiring to do both — setOnEvent
// replaces, not appends (SSETransport.ts:658).
sse.setOnEvent(event => {
ccr.reportDelivery(event.event_id, 'received')
ccr.reportDelivery(event.event_id, 'processed')
})
// Both sse.connect() and ccr.initialize() are deferred to connect() below.
// replBridge's calling order is newTransport → setOnConnect → setOnData →
// setOnClose → connect(), and both calls need those callbacks wired first:
// sse.connect() opens the stream (events flow to onData/onClose immediately),
// and ccr.initialize().then() fires onConnectCb.
//
// onConnect fires once ccr.initialize() resolves. Writes go via
// CCRClient HTTP POST (SerialBatchEventUploader), not SSE, so the
// write path is ready the moment workerEpoch is set. SSE.connect()
// awaits its read loop and never resolves — don't gate on it.
// The SSE stream opens in parallel (~30ms) and starts delivering
// inbound events via setOnData; outbound doesn't need to wait for it.
let onConnectCb: (() => void) | undefined
let ccrInitialized = false
let closed = false
return {
write(msg) {
return ccr.writeEvent(msg)
},
async writeBatch(msgs) {
// SerialBatchEventUploader already batches internally (maxBatchSize=100);
// sequential enqueue preserves order and the uploader coalesces.
// Check closed between writes to avoid sending partial batches after
// transport teardown (epoch mismatch, SSE drop).
for (const m of msgs) {
if (closed) break
await ccr.writeEvent(m)
}
},
close() {
closed = true
ccr.close()
sse.close()
},
isConnectedStatus() {
// Write-readiness, not read-readiness — replBridge checks this
// before calling writeBatch. SSE open state is orthogonal.
return ccrInitialized
},
getStateLabel() {
// SSETransport doesn't expose its state string; synthesize from
// what we can observe. replBridge only uses this for debug logging.
if (sse.isClosedStatus()) return 'closed'
if (sse.isConnectedStatus()) return ccrInitialized ? 'connected' : 'init'
return 'connecting'
},
setOnData(cb) {
sse.setOnData(cb)
},
setOnClose(cb) {
onCloseCb = cb
// SSE reconnect-budget exhaustion fires onClose(undefined) — map to
// 4092 so ws_closed telemetry can distinguish it from HTTP-status
// closes (SSETransport:280 passes response.status). Stop CCRClient's
// heartbeat timer before notifying replBridge. (sse.close() doesn't
// invoke this, so the epoch-mismatch path above isn't double-firing.)
sse.setOnClose(code => {
ccr.close()
cb(code ?? 4092)
})
},
setOnConnect(cb) {
onConnectCb = cb
},
getLastSequenceNum() {
return sse.getLastSequenceNum()
},
// v2 write path (CCRClient) doesn't set maxConsecutiveFailures — no drops.
droppedBatchCount: 0,
reportState(state) {
ccr.reportState(state)
},
reportMetadata(metadata) {
ccr.reportMetadata(metadata)
},
reportDelivery(eventId, status) {
ccr.reportDelivery(eventId, status)
},
flush() {
return ccr.flush()
},
connect() {
// Outbound-only: skip the SSE read stream entirely — no inbound
// events to receive, no delivery ACKs to send. Only the CCRClient
// write path (POST /worker/events) and heartbeat are needed.
if (!opts.outboundOnly) {
// Fire-and-forget — SSETransport.connect() awaits readStream()
// (the read loop) and only resolves on stream close/error. The
// spawn-mode path in remoteIO.ts does the same void discard.
void sse.connect()
}
void ccr.initialize(epoch).then(
() => {
ccrInitialized = true
logForDebugging(
`[bridge:repl] v2 transport ready for writes (epoch=${epoch}, sse=${sse.isConnectedStatus() ? 'open' : 'opening'})`,
)
onConnectCb?.()
},
(err: unknown) => {
logForDebugging(
`[bridge:repl] CCR v2 initialize failed: ${errorMessage(err)}`,
{ level: 'error' },
)
// Close transport resources and notify replBridge via onClose
// so the poll loop can retry on the next work dispatch.
// Without this callback, replBridge never learns the transport
// failed to initialize and sits with transport === null forever.
ccr.close()
sse.close()
onCloseCb?.(4091) // 4091 = init failure, distinguishable from 4090 epoch mismatch
},
)
},
}
}

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/**
* Session ID tag translation helpers for the CCR v2 compat layer.
*
* Lives in its own file (rather than workSecret.ts) so that sessionHandle.ts
* and replBridgeTransport.ts (bridge.mjs entry points) can import from
* workSecret.ts without pulling in these retag functions.
*
* The isCseShimEnabled kill switch is injected via setCseShimGate() to avoid
* a static import of bridgeEnabled.ts → growthbook.ts → config.ts — all
* banned from the sdk.mjs bundle (scripts/build-agent-sdk.sh). Callers that
* already import bridgeEnabled.ts register the gate; the SDK path never does,
* so the shim defaults to active (matching isCseShimEnabled()'s own default).
*/
let _isCseShimEnabled: (() => boolean) | undefined
/**
* Register the GrowthBook gate for the cse_ shim. Called from bridge
* init code that already imports bridgeEnabled.ts.
*/
export function setCseShimGate(gate: () => boolean): void {
_isCseShimEnabled = gate
}
/**
* Re-tag a `cse_*` session ID to `session_*` for use with the v1 compat API.
*
* Worker endpoints (/v1/code/sessions/{id}/worker/*) want `cse_*`; that's
* what the work poll delivers. Client-facing compat endpoints
* (/v1/sessions/{id}, /v1/sessions/{id}/archive, /v1/sessions/{id}/events)
* want `session_*` — compat/convert.go:27 validates TagSession. Same UUID,
* different costume. No-op for IDs that aren't `cse_*`.
*
* bridgeMain holds one sessionId variable for both worker registration and
* session-management calls. It arrives as `cse_*` from the work poll under
* the compat gate, so archiveSession/fetchSessionTitle need this re-tag.
*/
export function toCompatSessionId(id: string): string {
if (!id.startsWith('cse_')) return id
if (_isCseShimEnabled && !_isCseShimEnabled()) return id
return 'session_' + id.slice('cse_'.length)
}
/**
* Re-tag a `session_*` session ID to `cse_*` for infrastructure-layer calls.
*
* Inverse of toCompatSessionId. POST /v1/environments/{id}/bridge/reconnect
* lives below the compat layer: once ccr_v2_compat_enabled is on server-side,
* it looks sessions up by their infra tag (`cse_*`). createBridgeSession still
* returns `session_*` (compat/convert.go:41) and that's what bridge-pointer
* stores — so perpetual reconnect passes the wrong costume and gets "Session
* not found" back. Same UUID, wrong tag. No-op for IDs that aren't `session_*`.
*/
export function toInfraSessionId(id: string): string {
if (!id.startsWith('session_')) return id
return 'cse_' + id.slice('session_'.length)
}

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import { type ChildProcess, spawn } from 'child_process'
import { createWriteStream, type WriteStream } from 'fs'
import { tmpdir } from 'os'
import { dirname, join } from 'path'
import { createInterface } from 'readline'
import { jsonParse, jsonStringify } from '../utils/slowOperations.js'
import { debugTruncate } from './debugUtils.js'
import type {
SessionActivity,
SessionDoneStatus,
SessionHandle,
SessionSpawner,
SessionSpawnOpts,
} from './types.js'
const MAX_ACTIVITIES = 10
const MAX_STDERR_LINES = 10
/**
* Sanitize a session ID for use in file names.
* Strips any characters that could cause path traversal (e.g. `../`, `/`)
* or other filesystem issues, replacing them with underscores.
*/
export function safeFilenameId(id: string): string {
return id.replace(/[^a-zA-Z0-9_-]/g, '_')
}
/**
* A control_request emitted by the child CLI when it needs permission to
* execute a **specific** tool invocation (not a general capability check).
* The bridge forwards this to the server so the user can approve/deny.
*/
export type PermissionRequest = {
type: 'control_request'
request_id: string
request: {
/** Per-invocation permission check — "may I run this tool with these inputs?" */
subtype: 'can_use_tool'
tool_name: string
input: Record<string, unknown>
tool_use_id: string
}
}
type SessionSpawnerDeps = {
execPath: string
/**
* Arguments that must precede the CLI flags when spawning. Empty for
* compiled binaries (where execPath is the claude binary itself); contains
* the script path (process.argv[1]) for npm installs where execPath is the
* node runtime. Without this, node sees --sdk-url as a node option and
* exits with "bad option: --sdk-url" (see anthropics/claude-code#28334).
*/
scriptArgs: string[]
env: NodeJS.ProcessEnv
verbose: boolean
sandbox: boolean
debugFile?: string
permissionMode?: string
onDebug: (msg: string) => void
onActivity?: (sessionId: string, activity: SessionActivity) => void
onPermissionRequest?: (
sessionId: string,
request: PermissionRequest,
accessToken: string,
) => void
}
/** Map tool names to human-readable verbs for the status display. */
const TOOL_VERBS: Record<string, string> = {
Read: 'Reading',
Write: 'Writing',
Edit: 'Editing',
MultiEdit: 'Editing',
Bash: 'Running',
Glob: 'Searching',
Grep: 'Searching',
WebFetch: 'Fetching',
WebSearch: 'Searching',
Task: 'Running task',
FileReadTool: 'Reading',
FileWriteTool: 'Writing',
FileEditTool: 'Editing',
GlobTool: 'Searching',
GrepTool: 'Searching',
BashTool: 'Running',
NotebookEditTool: 'Editing notebook',
LSP: 'LSP',
}
function toolSummary(name: string, input: Record<string, unknown>): string {
const verb = TOOL_VERBS[name] ?? name
const target =
(input.file_path as string) ??
(input.filePath as string) ??
(input.pattern as string) ??
(input.command as string | undefined)?.slice(0, 60) ??
(input.url as string) ??
(input.query as string) ??
''
if (target) {
return `${verb} ${target}`
}
return verb
}
function extractActivities(
line: string,
sessionId: string,
onDebug: (msg: string) => void,
): SessionActivity[] {
let parsed: unknown
try {
parsed = jsonParse(line)
} catch {
return []
}
if (!parsed || typeof parsed !== 'object') {
return []
}
const msg = parsed as Record<string, unknown>
const activities: SessionActivity[] = []
const now = Date.now()
switch (msg.type) {
case 'assistant': {
const message = msg.message as Record<string, unknown> | undefined
if (!message) break
const content = message.content
if (!Array.isArray(content)) break
for (const block of content) {
if (!block || typeof block !== 'object') continue
const b = block as Record<string, unknown>
if (b.type === 'tool_use') {
const name = (b.name as string) ?? 'Tool'
const input = (b.input as Record<string, unknown>) ?? {}
const summary = toolSummary(name, input)
activities.push({
type: 'tool_start',
summary,
timestamp: now,
})
onDebug(
`[bridge:activity] sessionId=${sessionId} tool_use name=${name} ${inputPreview(input)}`,
)
} else if (b.type === 'text') {
const text = (b.text as string) ?? ''
if (text.length > 0) {
activities.push({
type: 'text',
summary: text.slice(0, 80),
timestamp: now,
})
onDebug(
`[bridge:activity] sessionId=${sessionId} text "${text.slice(0, 100)}"`,
)
}
}
}
break
}
case 'result': {
const subtype = msg.subtype as string | undefined
if (subtype === 'success') {
activities.push({
type: 'result',
summary: 'Session completed',
timestamp: now,
})
onDebug(
`[bridge:activity] sessionId=${sessionId} result subtype=success`,
)
} else if (subtype) {
const errors = msg.errors as string[] | undefined
const errorSummary = errors?.[0] ?? `Error: ${subtype}`
activities.push({
type: 'error',
summary: errorSummary,
timestamp: now,
})
onDebug(
`[bridge:activity] sessionId=${sessionId} result subtype=${subtype} error="${errorSummary}"`,
)
} else {
onDebug(
`[bridge:activity] sessionId=${sessionId} result subtype=undefined`,
)
}
break
}
default:
break
}
return activities
}
/**
* Extract plain text from a replayed SDKUserMessage NDJSON line. Returns the
* trimmed text if this looks like a real human-authored message, otherwise
* undefined so the caller keeps waiting for the first real message.
*/
function extractUserMessageText(
msg: Record<string, unknown>,
): string | undefined {
// Skip tool-result user messages (wrapped subagent results) and synthetic
// caveat messages — neither is human-authored.
if (msg.parent_tool_use_id != null || msg.isSynthetic || msg.isReplay)
return undefined
const message = msg.message as Record<string, unknown> | undefined
const content = message?.content
let text: string | undefined
if (typeof content === 'string') {
text = content
} else if (Array.isArray(content)) {
for (const block of content) {
if (
block &&
typeof block === 'object' &&
(block as Record<string, unknown>).type === 'text'
) {
text = (block as Record<string, unknown>).text as string | undefined
break
}
}
}
text = text?.trim()
return text ? text : undefined
}
/** Build a short preview of tool input for debug logging. */
function inputPreview(input: Record<string, unknown>): string {
const parts: string[] = []
for (const [key, val] of Object.entries(input)) {
if (typeof val === 'string') {
parts.push(`${key}="${val.slice(0, 100)}"`)
}
if (parts.length >= 3) break
}
return parts.join(' ')
}
export function createSessionSpawner(deps: SessionSpawnerDeps): SessionSpawner {
return {
spawn(opts: SessionSpawnOpts, dir: string): SessionHandle {
// Debug file resolution:
// 1. If deps.debugFile is provided, use it with session ID suffix for uniqueness
// 2. If verbose or ant build, auto-generate a temp file path
// 3. Otherwise, no debug file
const safeId = safeFilenameId(opts.sessionId)
let debugFile: string | undefined
if (deps.debugFile) {
const ext = deps.debugFile.lastIndexOf('.')
if (ext > 0) {
debugFile = `${deps.debugFile.slice(0, ext)}-${safeId}${deps.debugFile.slice(ext)}`
} else {
debugFile = `${deps.debugFile}-${safeId}`
}
} else if (deps.verbose || process.env.USER_TYPE === 'ant') {
debugFile = join(tmpdir(), 'claude', `bridge-session-${safeId}.log`)
}
// Transcript file: write raw NDJSON lines for post-hoc analysis.
// Placed alongside the debug file when one is configured.
let transcriptStream: WriteStream | null = null
let transcriptPath: string | undefined
if (deps.debugFile) {
transcriptPath = join(
dirname(deps.debugFile),
`bridge-transcript-${safeId}.jsonl`,
)
transcriptStream = createWriteStream(transcriptPath, { flags: 'a' })
transcriptStream.on('error', err => {
deps.onDebug(
`[bridge:session] Transcript write error: ${err.message}`,
)
transcriptStream = null
})
deps.onDebug(`[bridge:session] Transcript log: ${transcriptPath}`)
}
const args = [
...deps.scriptArgs,
'--print',
'--sdk-url',
opts.sdkUrl,
'--session-id',
opts.sessionId,
'--input-format',
'stream-json',
'--output-format',
'stream-json',
'--replay-user-messages',
...(deps.verbose ? ['--verbose'] : []),
...(debugFile ? ['--debug-file', debugFile] : []),
...(deps.permissionMode
? ['--permission-mode', deps.permissionMode]
: []),
]
const env: NodeJS.ProcessEnv = {
...deps.env,
// Strip the bridge's OAuth token so the child CC process uses
// the session access token for inference instead.
CLAUDE_CODE_OAUTH_TOKEN: undefined,
CLAUDE_CODE_ENVIRONMENT_KIND: 'bridge',
...(deps.sandbox && { CLAUDE_CODE_FORCE_SANDBOX: '1' }),
CLAUDE_CODE_SESSION_ACCESS_TOKEN: opts.accessToken,
// v1: HybridTransport (WS reads + POST writes) to Session-Ingress.
// Harmless in v2 mode — transportUtils checks CLAUDE_CODE_USE_CCR_V2 first.
CLAUDE_CODE_POST_FOR_SESSION_INGRESS_V2: '1',
// v2: SSETransport + CCRClient to CCR's /v1/code/sessions/* endpoints.
// Same env vars environment-manager sets in the container path.
...(opts.useCcrV2 && {
CLAUDE_CODE_USE_CCR_V2: '1',
CLAUDE_CODE_WORKER_EPOCH: String(opts.workerEpoch),
}),
}
deps.onDebug(
`[bridge:session] Spawning sessionId=${opts.sessionId} sdkUrl=${opts.sdkUrl} accessToken=${opts.accessToken ? 'present' : 'MISSING'}`,
)
deps.onDebug(`[bridge:session] Child args: ${args.join(' ')}`)
if (debugFile) {
deps.onDebug(`[bridge:session] Debug log: ${debugFile}`)
}
// Pipe all three streams: stdin for control, stdout for NDJSON parsing,
// stderr for error capture and diagnostics.
const child: ChildProcess = spawn(deps.execPath, args, {
cwd: dir,
stdio: ['pipe', 'pipe', 'pipe'],
env,
windowsHide: true,
})
deps.onDebug(
`[bridge:session] sessionId=${opts.sessionId} pid=${child.pid}`,
)
const activities: SessionActivity[] = []
let currentActivity: SessionActivity | null = null
const lastStderr: string[] = []
let sigkillSent = false
let firstUserMessageSeen = false
// Buffer stderr for error diagnostics
if (child.stderr) {
const stderrRl = createInterface({ input: child.stderr })
stderrRl.on('line', line => {
// Forward stderr to bridge's stderr in verbose mode
if (deps.verbose) {
process.stderr.write(line + '\n')
}
// Ring buffer of last N lines
if (lastStderr.length >= MAX_STDERR_LINES) {
lastStderr.shift()
}
lastStderr.push(line)
})
}
// Parse NDJSON from child stdout
if (child.stdout) {
const rl = createInterface({ input: child.stdout })
rl.on('line', line => {
// Write raw NDJSON to transcript file
if (transcriptStream) {
transcriptStream.write(line + '\n')
}
// Log all messages flowing from the child CLI to the bridge
deps.onDebug(
`[bridge:ws] sessionId=${opts.sessionId} <<< ${debugTruncate(line)}`,
)
// In verbose mode, forward raw output to stderr
if (deps.verbose) {
process.stderr.write(line + '\n')
}
const extracted = extractActivities(
line,
opts.sessionId,
deps.onDebug,
)
for (const activity of extracted) {
// Maintain ring buffer
if (activities.length >= MAX_ACTIVITIES) {
activities.shift()
}
activities.push(activity)
currentActivity = activity
deps.onActivity?.(opts.sessionId, activity)
}
// Detect control_request and replayed user messages.
// extractActivities parses the same line but swallows parse errors
// and skips 'user' type — re-parse here is cheap (NDJSON lines are
// small) and keeps each path self-contained.
{
let parsed: unknown
try {
parsed = jsonParse(line)
} catch {
// Non-JSON line, skip detection
}
if (parsed && typeof parsed === 'object') {
const msg = parsed as Record<string, unknown>
if (msg.type === 'control_request') {
const request = msg.request as
| Record<string, unknown>
| undefined
if (
request?.subtype === 'can_use_tool' &&
deps.onPermissionRequest
) {
deps.onPermissionRequest(
opts.sessionId,
parsed as PermissionRequest,
opts.accessToken,
)
}
// interrupt is turn-level; the child handles it internally (print.ts)
} else if (
msg.type === 'user' &&
!firstUserMessageSeen &&
opts.onFirstUserMessage
) {
const text = extractUserMessageText(msg)
if (text) {
firstUserMessageSeen = true
opts.onFirstUserMessage(text)
}
}
}
}
})
}
const done = new Promise<SessionDoneStatus>(resolve => {
child.on('close', (code, signal) => {
// Close transcript stream on exit
if (transcriptStream) {
transcriptStream.end()
transcriptStream = null
}
if (signal === 'SIGTERM' || signal === 'SIGINT') {
deps.onDebug(
`[bridge:session] sessionId=${opts.sessionId} interrupted signal=${signal} pid=${child.pid}`,
)
resolve('interrupted')
} else if (code === 0) {
deps.onDebug(
`[bridge:session] sessionId=${opts.sessionId} completed exit_code=0 pid=${child.pid}`,
)
resolve('completed')
} else {
deps.onDebug(
`[bridge:session] sessionId=${opts.sessionId} failed exit_code=${code} pid=${child.pid}`,
)
resolve('failed')
}
})
child.on('error', err => {
deps.onDebug(
`[bridge:session] sessionId=${opts.sessionId} spawn error: ${err.message}`,
)
resolve('failed')
})
})
const handle: SessionHandle = {
sessionId: opts.sessionId,
done,
activities,
accessToken: opts.accessToken,
lastStderr,
get currentActivity(): SessionActivity | null {
return currentActivity
},
kill(): void {
if (!child.killed) {
deps.onDebug(
`[bridge:session] Sending SIGTERM to sessionId=${opts.sessionId} pid=${child.pid}`,
)
// On Windows, child.kill('SIGTERM') throws; use default signal.
if (process.platform === 'win32') {
child.kill()
} else {
child.kill('SIGTERM')
}
}
},
forceKill(): void {
// Use separate flag because child.killed is set when kill() is called,
// not when the process exits. We need to send SIGKILL even after SIGTERM.
if (!sigkillSent && child.pid) {
sigkillSent = true
deps.onDebug(
`[bridge:session] Sending SIGKILL to sessionId=${opts.sessionId} pid=${child.pid}`,
)
if (process.platform === 'win32') {
child.kill()
} else {
child.kill('SIGKILL')
}
}
},
writeStdin(data: string): void {
if (child.stdin && !child.stdin.destroyed) {
deps.onDebug(
`[bridge:ws] sessionId=${opts.sessionId} >>> ${debugTruncate(data)}`,
)
child.stdin.write(data)
}
},
updateAccessToken(token: string): void {
handle.accessToken = token
// Send the fresh token to the child process via stdin. The child's
// StructuredIO handles update_environment_variables messages by
// setting process.env directly, so getSessionIngressAuthToken()
// picks up the new token on the next refreshHeaders call.
handle.writeStdin(
jsonStringify({
type: 'update_environment_variables',
variables: { CLAUDE_CODE_SESSION_ACCESS_TOKEN: token },
}) + '\n',
)
deps.onDebug(
`[bridge:session] Sent token refresh via stdin for sessionId=${opts.sessionId}`,
)
},
}
return handle
},
}
}
export { extractActivities as _extractActivitiesForTesting }

210
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import axios from 'axios'
import memoize from 'lodash-es/memoize.js'
import { hostname } from 'os'
import { getOauthConfig } from '../constants/oauth.js'
import {
checkGate_CACHED_OR_BLOCKING,
getFeatureValue_CACHED_MAY_BE_STALE,
} from '../services/analytics/growthbook.js'
import { logForDebugging } from '../utils/debug.js'
import { errorMessage } from '../utils/errors.js'
import { isEssentialTrafficOnly } from '../utils/privacyLevel.js'
import { getSecureStorage } from '../utils/secureStorage/index.js'
import { jsonStringify } from '../utils/slowOperations.js'
/**
* Trusted device token source for bridge (remote-control) sessions.
*
* Bridge sessions have SecurityTier=ELEVATED on the server (CCR v2).
* The server gates ConnectBridgeWorker on its own flag
* (sessions_elevated_auth_enforcement in Anthropic Main); this CLI-side
* flag controls whether the CLI sends X-Trusted-Device-Token at all.
* Two flags so rollout can be staged: flip CLI-side first (headers
* start flowing, server still no-ops), then flip server-side.
*
* Enrollment (POST /auth/trusted_devices) is gated server-side by
* account_session.created_at < 10min, so it must happen during /login.
* Token is persistent (90d rolling expiry) and stored in keychain.
*
* See anthropics/anthropic#274559 (spec), #310375 (B1b tenant RPCs),
* #295987 (B2 Python routes), #307150 (C1' CCR v2 gate).
*/
const TRUSTED_DEVICE_GATE = 'tengu_sessions_elevated_auth_enforcement'
function isGateEnabled(): boolean {
return getFeatureValue_CACHED_MAY_BE_STALE(TRUSTED_DEVICE_GATE, false)
}
// Memoized — secureStorage.read() spawns a macOS `security` subprocess (~40ms).
// bridgeApi.ts calls this from getHeaders() on every poll/heartbeat/ack.
// Cache cleared after enrollment (below) and on logout (clearAuthRelatedCaches).
//
// Only the storage read is memoized — the GrowthBook gate is checked live so
// that a gate flip after GrowthBook refresh takes effect without a restart.
const readStoredToken = memoize((): string | undefined => {
// Env var takes precedence for testing/canary.
const envToken = process.env.CLAUDE_TRUSTED_DEVICE_TOKEN
if (envToken) {
return envToken
}
return getSecureStorage().read()?.trustedDeviceToken
})
export function getTrustedDeviceToken(): string | undefined {
if (!isGateEnabled()) {
return undefined
}
return readStoredToken()
}
export function clearTrustedDeviceTokenCache(): void {
readStoredToken.cache?.clear?.()
}
/**
* Clear the stored trusted device token from secure storage and the memo cache.
* Called before enrollTrustedDevice() during /login so a stale token from the
* previous account isn't sent as X-Trusted-Device-Token while enrollment is
* in-flight (enrollTrustedDevice is async — bridge API calls between login and
* enrollment completion would otherwise still read the old cached token).
*/
export function clearTrustedDeviceToken(): void {
if (!isGateEnabled()) {
return
}
const secureStorage = getSecureStorage()
try {
const data = secureStorage.read()
if (data?.trustedDeviceToken) {
delete data.trustedDeviceToken
secureStorage.update(data)
}
} catch {
// Best-effort — don't block login if storage is inaccessible
}
readStoredToken.cache?.clear?.()
}
/**
* Enroll this device via POST /auth/trusted_devices and persist the token
* to keychain. Best-effort — logs and returns on failure so callers
* (post-login hooks) don't block the login flow.
*
* The server gates enrollment on account_session.created_at < 10min, so
* this must be called immediately after a fresh /login. Calling it later
* (e.g. lazy enrollment on /bridge 403) will fail with 403 stale_session.
*/
export async function enrollTrustedDevice(): Promise<void> {
try {
// checkGate_CACHED_OR_BLOCKING awaits any in-flight GrowthBook re-init
// (triggered by refreshGrowthBookAfterAuthChange in login.tsx) before
// reading the gate, so we get the post-refresh value.
if (!(await checkGate_CACHED_OR_BLOCKING(TRUSTED_DEVICE_GATE))) {
logForDebugging(
`[trusted-device] Gate ${TRUSTED_DEVICE_GATE} is off, skipping enrollment`,
)
return
}
// If CLAUDE_TRUSTED_DEVICE_TOKEN is set (e.g. by an enterprise wrapper),
// skip enrollment — the env var takes precedence in readStoredToken() so
// any enrolled token would be shadowed and never used.
if (process.env.CLAUDE_TRUSTED_DEVICE_TOKEN) {
logForDebugging(
'[trusted-device] CLAUDE_TRUSTED_DEVICE_TOKEN env var is set, skipping enrollment (env var takes precedence)',
)
return
}
// Lazy require — utils/auth.ts transitively pulls ~1300 modules
// (config → file → permissions → sessionStorage → commands). Daemon callers
// of getTrustedDeviceToken() don't need this; only /login does.
/* eslint-disable @typescript-eslint/no-require-imports */
const { getClaudeAIOAuthTokens } =
require('../utils/auth.js') as typeof import('../utils/auth.js')
/* eslint-enable @typescript-eslint/no-require-imports */
const accessToken = getClaudeAIOAuthTokens()?.accessToken
if (!accessToken) {
logForDebugging('[trusted-device] No OAuth token, skipping enrollment')
return
}
// Always re-enroll on /login — the existing token may belong to a
// different account (account-switch without /logout). Skipping enrollment
// would send the old account's token on the new account's bridge calls.
const secureStorage = getSecureStorage()
if (isEssentialTrafficOnly()) {
logForDebugging(
'[trusted-device] Essential traffic only, skipping enrollment',
)
return
}
const baseUrl = getOauthConfig().BASE_API_URL
let response
try {
response = await axios.post<{
device_token?: string
device_id?: string
}>(
`${baseUrl}/api/auth/trusted_devices`,
{ display_name: `Claude Code on ${hostname()} · ${process.platform}` },
{
headers: {
Authorization: `Bearer ${accessToken}`,
'Content-Type': 'application/json',
},
timeout: 10_000,
validateStatus: s => s < 500,
},
)
} catch (err: unknown) {
logForDebugging(
`[trusted-device] Enrollment request failed: ${errorMessage(err)}`,
)
return
}
if (response.status !== 200 && response.status !== 201) {
logForDebugging(
`[trusted-device] Enrollment failed ${response.status}: ${jsonStringify(response.data).slice(0, 200)}`,
)
return
}
const token = response.data?.device_token
if (!token || typeof token !== 'string') {
logForDebugging(
'[trusted-device] Enrollment response missing device_token field',
)
return
}
try {
const storageData = secureStorage.read()
if (!storageData) {
logForDebugging(
'[trusted-device] Cannot read storage, skipping token persist',
)
return
}
storageData.trustedDeviceToken = token
const result = secureStorage.update(storageData)
if (!result.success) {
logForDebugging(
`[trusted-device] Failed to persist token: ${result.warning ?? 'unknown'}`,
)
return
}
readStoredToken.cache?.clear?.()
logForDebugging(
`[trusted-device] Enrolled device_id=${response.data.device_id ?? 'unknown'}`,
)
} catch (err: unknown) {
logForDebugging(
`[trusted-device] Storage write failed: ${errorMessage(err)}`,
)
}
} catch (err: unknown) {
logForDebugging(`[trusted-device] Enrollment error: ${errorMessage(err)}`)
}
}

262
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/** Default per-session timeout (24 hours). */
export const DEFAULT_SESSION_TIMEOUT_MS = 24 * 60 * 60 * 1000
/** Reusable login guidance appended to bridge auth errors. */
export const BRIDGE_LOGIN_INSTRUCTION =
'Remote Control is only available with claude.ai subscriptions. Please use `/login` to sign in with your claude.ai account.'
/** Full error printed when `claude remote-control` is run without auth. */
export const BRIDGE_LOGIN_ERROR =
'Error: You must be logged in to use Remote Control.\n\n' +
BRIDGE_LOGIN_INSTRUCTION
/** Shown when the user disconnects Remote Control (via /remote-control or ultraplan launch). */
export const REMOTE_CONTROL_DISCONNECTED_MSG = 'Remote Control disconnected.'
// --- Protocol types for the environments API ---
export type WorkData = {
type: 'session' | 'healthcheck'
id: string
}
export type WorkResponse = {
id: string
type: 'work'
environment_id: string
state: string
data: WorkData
secret: string // base64url-encoded JSON
created_at: string
}
export type WorkSecret = {
version: number
session_ingress_token: string
api_base_url: string
sources: Array<{
type: string
git_info?: { type: string; repo: string; ref?: string; token?: string }
}>
auth: Array<{ type: string; token: string }>
claude_code_args?: Record<string, string> | null
mcp_config?: unknown | null
environment_variables?: Record<string, string> | null
/**
* Server-driven CCR v2 selector. Set by prepare_work_secret() when the
* session was created via the v2 compat layer (ccr_v2_compat_enabled).
* Same field the BYOC runner reads at environment-runner/sessionExecutor.ts.
*/
use_code_sessions?: boolean
}
export type SessionDoneStatus = 'completed' | 'failed' | 'interrupted'
export type SessionActivityType = 'tool_start' | 'text' | 'result' | 'error'
export type SessionActivity = {
type: SessionActivityType
summary: string // e.g. "Editing src/foo.ts", "Reading package.json"
timestamp: number
}
/**
* How `claude remote-control` chooses session working directories.
* - `single-session`: one session in cwd, bridge tears down when it ends
* - `worktree`: persistent server, every session gets an isolated git worktree
* - `same-dir`: persistent server, every session shares cwd (can stomp each other)
*/
export type SpawnMode = 'single-session' | 'worktree' | 'same-dir'
/**
* Well-known worker_type values THIS codebase produces. Sent as
* `metadata.worker_type` at environment registration so claude.ai can filter
* the session picker by origin (e.g. assistant tab only shows assistant
* workers). The backend treats this as an opaque string — desktop cowork
* sends `"cowork"`, which isn't in this union. REPL code uses this narrow
* type for its own exhaustiveness; wire-level fields accept any string.
*/
export type BridgeWorkerType = 'claude_code' | 'claude_code_assistant'
export type BridgeConfig = {
dir: string
machineName: string
branch: string
gitRepoUrl: string | null
maxSessions: number
spawnMode: SpawnMode
verbose: boolean
sandbox: boolean
/** Client-generated UUID identifying this bridge instance. */
bridgeId: string
/**
* Sent as metadata.worker_type so web clients can filter by origin.
* Backend treats this as opaque — any string, not just BridgeWorkerType.
*/
workerType: string
/** Client-generated UUID for idempotent environment registration. */
environmentId: string
/**
* Backend-issued environment_id to reuse on re-register. When set, the
* backend treats registration as a reconnect to the existing environment
* instead of creating a new one. Used by `claude remote-control
* --session-id` resume. Must be a backend-format ID — client UUIDs are
* rejected with 400.
*/
reuseEnvironmentId?: string
/** API base URL the bridge is connected to (used for polling). */
apiBaseUrl: string
/** Session ingress base URL for WebSocket connections (may differ from apiBaseUrl locally). */
sessionIngressUrl: string
/** Debug file path passed via --debug-file. */
debugFile?: string
/** Per-session timeout in milliseconds. Sessions exceeding this are killed. */
sessionTimeoutMs?: number
}
// --- Dependency interfaces (for testability) ---
/**
* A control_response event sent back to a session (e.g. a permission decision).
* The `subtype` is `'success'` per the SDK protocol; the inner `response`
* carries the permission decision payload (e.g. `{ behavior: 'allow' }`).
*/
export type PermissionResponseEvent = {
type: 'control_response'
response: {
subtype: 'success'
request_id: string
response: Record<string, unknown>
}
}
export type BridgeApiClient = {
registerBridgeEnvironment(config: BridgeConfig): Promise<{
environment_id: string
environment_secret: string
}>
pollForWork(
environmentId: string,
environmentSecret: string,
signal?: AbortSignal,
reclaimOlderThanMs?: number,
): Promise<WorkResponse | null>
acknowledgeWork(
environmentId: string,
workId: string,
sessionToken: string,
): Promise<void>
/** Stop a work item via the environments API. */
stopWork(environmentId: string, workId: string, force: boolean): Promise<void>
/** Deregister/delete the bridge environment on graceful shutdown. */
deregisterEnvironment(environmentId: string): Promise<void>
/** Send a permission response (control_response) to a session via the session events API. */
sendPermissionResponseEvent(
sessionId: string,
event: PermissionResponseEvent,
sessionToken: string,
): Promise<void>
/** Archive a session so it no longer appears as active on the server. */
archiveSession(sessionId: string): Promise<void>
/**
* Force-stop stale worker instances and re-queue a session on an environment.
* Used by `--session-id` to resume a session after the original bridge died.
*/
reconnectSession(environmentId: string, sessionId: string): Promise<void>
/**
* Send a lightweight heartbeat for an active work item, extending its lease.
* Uses SessionIngressAuth (JWT, no DB hit) instead of EnvironmentSecretAuth.
* Returns the server's response with lease status.
*/
heartbeatWork(
environmentId: string,
workId: string,
sessionToken: string,
): Promise<{ lease_extended: boolean; state: string }>
}
export type SessionHandle = {
sessionId: string
done: Promise<SessionDoneStatus>
kill(): void
forceKill(): void
activities: SessionActivity[] // ring buffer of recent activities (last ~10)
currentActivity: SessionActivity | null // most recent
accessToken: string // session_ingress_token for API calls
lastStderr: string[] // ring buffer of last stderr lines
writeStdin(data: string): void // write directly to child stdin
/** Update the access token for a running session (e.g. after token refresh). */
updateAccessToken(token: string): void
}
export type SessionSpawnOpts = {
sessionId: string
sdkUrl: string
accessToken: string
/** When true, spawn the child with CCR v2 env vars (SSE transport + CCRClient). */
useCcrV2?: boolean
/** Required when useCcrV2 is true. Obtained from POST /worker/register. */
workerEpoch?: number
/**
* Fires once with the text of the first real user message seen on the
* child's stdout (via --replay-user-messages). Lets the caller derive a
* session title when none exists yet. Tool-result and synthetic user
* messages are skipped.
*/
onFirstUserMessage?: (text: string) => void
}
export type SessionSpawner = {
spawn(opts: SessionSpawnOpts, dir: string): SessionHandle
}
export type BridgeLogger = {
printBanner(config: BridgeConfig, environmentId: string): void
logSessionStart(sessionId: string, prompt: string): void
logSessionComplete(sessionId: string, durationMs: number): void
logSessionFailed(sessionId: string, error: string): void
logStatus(message: string): void
logVerbose(message: string): void
logError(message: string): void
/** Log a reconnection success event after recovering from connection errors. */
logReconnected(disconnectedMs: number): void
/** Show idle status with repo/branch info and shimmer animation. */
updateIdleStatus(): void
/** Show reconnecting status in the live display. */
updateReconnectingStatus(delayStr: string, elapsedStr: string): void
updateSessionStatus(
sessionId: string,
elapsed: string,
activity: SessionActivity,
trail: string[],
): void
clearStatus(): void
/** Set repository info for status line display. */
setRepoInfo(repoName: string, branch: string): void
/** Set debug log glob shown above the status line (ant users). */
setDebugLogPath(path: string): void
/** Transition to "Attached" state when a session starts. */
setAttached(sessionId: string): void
/** Show failed status in the live display. */
updateFailedStatus(error: string): void
/** Toggle QR code visibility. */
toggleQr(): void
/** Update the "<n> of <m> sessions" indicator and spawn mode hint. */
updateSessionCount(active: number, max: number, mode: SpawnMode): void
/** Update the spawn mode shown in the session-count line. Pass null to hide (single-session or toggle unavailable). */
setSpawnModeDisplay(mode: 'same-dir' | 'worktree' | null): void
/** Register a new session for multi-session display (called after spawn succeeds). */
addSession(sessionId: string, url: string): void
/** Update the per-session activity summary (tool being run) in the multi-session list. */
updateSessionActivity(sessionId: string, activity: SessionActivity): void
/**
* Set a session's display title. In multi-session mode, updates the bullet list
* entry. In single-session mode, also shows the title in the main status line.
* Triggers a render (guarded against reconnecting/failed states).
*/
setSessionTitle(sessionId: string, title: string): void
/** Remove a session from the multi-session display when it ends. */
removeSession(sessionId: string): void
/** Force a re-render of the status display (for multi-session activity refresh). */
refreshDisplay(): void
}

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export function sanitizeWebhookPayload<T>(value: T): T {
return value
}

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import axios from 'axios'
import { jsonParse, jsonStringify } from '../utils/slowOperations.js'
import type { WorkSecret } from './types.js'
/** Decode a base64url-encoded work secret and validate its version. */
export function decodeWorkSecret(secret: string): WorkSecret {
const json = Buffer.from(secret, 'base64url').toString('utf-8')
const parsed: unknown = jsonParse(json)
if (
!parsed ||
typeof parsed !== 'object' ||
!('version' in parsed) ||
parsed.version !== 1
) {
throw new Error(
`Unsupported work secret version: ${parsed && typeof parsed === 'object' && 'version' in parsed ? parsed.version : 'unknown'}`,
)
}
const obj = parsed as Record<string, unknown>
if (
typeof obj.session_ingress_token !== 'string' ||
obj.session_ingress_token.length === 0
) {
throw new Error(
'Invalid work secret: missing or empty session_ingress_token',
)
}
if (typeof obj.api_base_url !== 'string') {
throw new Error('Invalid work secret: missing api_base_url')
}
return parsed as WorkSecret
}
/**
* Build a WebSocket SDK URL from the API base URL and session ID.
* Strips the HTTP(S) protocol and constructs a ws(s):// ingress URL.
*
* Uses /v2/ for localhost (direct to session-ingress, no Envoy rewrite)
* and /v1/ for production (Envoy rewrites /v1/ → /v2/).
*/
export function buildSdkUrl(apiBaseUrl: string, sessionId: string): string {
const isLocalhost =
apiBaseUrl.includes('localhost') || apiBaseUrl.includes('127.0.0.1')
const protocol = isLocalhost ? 'ws' : 'wss'
const version = isLocalhost ? 'v2' : 'v1'
const host = apiBaseUrl.replace(/^https?:\/\//, '').replace(/\/+$/, '')
return `${protocol}://${host}/${version}/session_ingress/ws/${sessionId}`
}
/**
* Compare two session IDs regardless of their tagged-ID prefix.
*
* Tagged IDs have the form {tag}_{body} or {tag}_staging_{body}, where the
* body encodes a UUID. CCR v2's compat layer returns `session_*` to v1 API
* clients (compat/convert.go:41) but the infrastructure layer (sandbox-gateway
* work queue, work poll response) uses `cse_*` (compat/CLAUDE.md:13). Both
* have the same underlying UUID.
*
* Without this, replBridge rejects its own session as "foreign" at the
* work-received check when the ccr_v2_compat_enabled gate is on.
*/
export function sameSessionId(a: string, b: string): boolean {
if (a === b) return true
// The body is everything after the last underscore — this handles both
// `{tag}_{body}` and `{tag}_staging_{body}`.
const aBody = a.slice(a.lastIndexOf('_') + 1)
const bBody = b.slice(b.lastIndexOf('_') + 1)
// Guard against IDs with no underscore (bare UUIDs): lastIndexOf returns -1,
// slice(0) returns the whole string, and we already checked a === b above.
// Require a minimum length to avoid accidental matches on short suffixes
// (e.g. single-char tag remnants from malformed IDs).
return aBody.length >= 4 && aBody === bBody
}
/**
* Build a CCR v2 session URL from the API base URL and session ID.
* Unlike buildSdkUrl, this returns an HTTP(S) URL (not ws://) and points at
* /v1/code/sessions/{id} — the child CC will derive the SSE stream path
* and worker endpoints from this base.
*/
export function buildCCRv2SdkUrl(
apiBaseUrl: string,
sessionId: string,
): string {
const base = apiBaseUrl.replace(/\/+$/, '')
return `${base}/v1/code/sessions/${sessionId}`
}
/**
* Register this bridge as the worker for a CCR v2 session.
* Returns the worker_epoch, which must be passed to the child CC process
* so its CCRClient can include it in every heartbeat/state/event request.
*
* Mirrors what environment-manager does in the container path
* (api-go/environment-manager/cmd/cmd_task_run.go RegisterWorker).
*/
export async function registerWorker(
sessionUrl: string,
accessToken: string,
): Promise<number> {
const response = await axios.post(
`${sessionUrl}/worker/register`,
{},
{
headers: {
Authorization: `Bearer ${accessToken}`,
'Content-Type': 'application/json',
'anthropic-version': '2023-06-01',
},
timeout: 10_000,
},
)
// protojson serializes int64 as a string to avoid JS number precision loss;
// the Go side may also return a number depending on encoder settings.
const raw = response.data?.worker_epoch
const epoch = typeof raw === 'string' ? Number(raw) : raw
if (
typeof epoch !== 'number' ||
!Number.isFinite(epoch) ||
!Number.isSafeInteger(epoch)
) {
throw new Error(
`registerWorker: invalid worker_epoch in response: ${jsonStringify(response.data)}`,
)
}
return epoch
}

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import { getGlobalConfig } from '../utils/config.js'
import {
type Companion,
type CompanionBones,
EYES,
HATS,
RARITIES,
RARITY_WEIGHTS,
type Rarity,
SPECIES,
STAT_NAMES,
type StatName,
} from './types.js'
// Mulberry32 — tiny seeded PRNG, good enough for picking ducks
function mulberry32(seed: number): () => number {
let a = seed >>> 0
return function () {
a |= 0
a = (a + 0x6d2b79f5) | 0
let t = Math.imul(a ^ (a >>> 15), 1 | a)
t = (t + Math.imul(t ^ (t >>> 7), 61 | t)) ^ t
return ((t ^ (t >>> 14)) >>> 0) / 4294967296
}
}
function hashString(s: string): number {
if (typeof Bun !== 'undefined') {
return Number(BigInt(Bun.hash(s)) & 0xffffffffn)
}
let h = 2166136261
for (let i = 0; i < s.length; i++) {
h ^= s.charCodeAt(i)
h = Math.imul(h, 16777619)
}
return h >>> 0
}
function pick<T>(rng: () => number, arr: readonly T[]): T {
return arr[Math.floor(rng() * arr.length)]!
}
function rollRarity(rng: () => number): Rarity {
const total = Object.values(RARITY_WEIGHTS).reduce((a, b) => a + b, 0)
let roll = rng() * total
for (const rarity of RARITIES) {
roll -= RARITY_WEIGHTS[rarity]
if (roll < 0) return rarity
}
return 'common'
}
const RARITY_FLOOR: Record<Rarity, number> = {
common: 5,
uncommon: 15,
rare: 25,
epic: 35,
legendary: 50,
}
// One peak stat, one dump stat, rest scattered. Rarity bumps the floor.
function rollStats(
rng: () => number,
rarity: Rarity,
): Record<StatName, number> {
const floor = RARITY_FLOOR[rarity]
const peak = pick(rng, STAT_NAMES)
let dump = pick(rng, STAT_NAMES)
while (dump === peak) dump = pick(rng, STAT_NAMES)
const stats = {} as Record<StatName, number>
for (const name of STAT_NAMES) {
if (name === peak) {
stats[name] = Math.min(100, floor + 50 + Math.floor(rng() * 30))
} else if (name === dump) {
stats[name] = Math.max(1, floor - 10 + Math.floor(rng() * 15))
} else {
stats[name] = floor + Math.floor(rng() * 40)
}
}
return stats
}
const SALT = 'friend-2026-401'
export type Roll = {
bones: CompanionBones
inspirationSeed: number
}
function rollFrom(rng: () => number): Roll {
const rarity = rollRarity(rng)
const bones: CompanionBones = {
rarity,
species: pick(rng, SPECIES),
eye: pick(rng, EYES),
hat: rarity === 'common' ? 'none' : pick(rng, HATS),
shiny: rng() < 0.01,
stats: rollStats(rng, rarity),
}
return { bones, inspirationSeed: Math.floor(rng() * 1e9) }
}
// Called from three hot paths (500ms sprite tick, per-keystroke PromptInput,
// per-turn observer) with the same userId → cache the deterministic result.
let rollCache: { key: string; value: Roll } | undefined
export function roll(userId: string): Roll {
const key = userId + SALT
if (rollCache?.key === key) return rollCache.value
const value = rollFrom(mulberry32(hashString(key)))
rollCache = { key, value }
return value
}
export function rollWithSeed(seed: string): Roll {
return rollFrom(mulberry32(hashString(seed)))
}
export function companionUserId(): string {
const config = getGlobalConfig()
return config.oauthAccount?.accountUuid ?? config.userID ?? 'anon'
}
// Regenerate bones from userId, merge with stored soul. Bones never persist
// so species renames and SPECIES-array edits can't break stored companions,
// and editing config.companion can't fake a rarity.
export function getCompanion(): Companion | undefined {
const stored = getGlobalConfig().companion
if (!stored) return undefined
const { bones } = roll(companionUserId())
// bones last so stale bones fields in old-format configs get overridden
return { ...stored, ...bones }
}

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import { feature } from 'bun:bundle'
import type { Message } from '../types/message.js'
import type { Attachment } from '../utils/attachments.js'
import { getGlobalConfig } from '../utils/config.js'
import { getCompanion } from './companion.js'
export function companionIntroText(name: string, species: string): string {
return `# Companion
A small ${species} named ${name} sits beside the user's input box and occasionally comments in a speech bubble. You're not ${name} — it's a separate watcher.
When the user addresses ${name} directly (by name), its bubble will answer. Your job in that moment is to stay out of the way: respond in ONE line or less, or just answer any part of the message meant for you. Don't explain that you're not ${name} — they know. Don't narrate what ${name} might say — the bubble handles that.`
}
export function getCompanionIntroAttachment(
messages: Message[] | undefined,
): Attachment[] {
if (!feature('BUDDY')) return []
const companion = getCompanion()
if (!companion || getGlobalConfig().companionMuted) return []
// Skip if already announced for this companion.
for (const msg of messages ?? []) {
if (msg.type !== 'attachment') continue
if (msg.attachment.type !== 'companion_intro') continue
if (msg.attachment.name === companion.name) return []
}
return [
{
type: 'companion_intro',
name: companion.name,
species: companion.species,
},
]
}

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import type { CompanionBones, Eye, Hat, Species } from './types.js'
import {
axolotl,
blob,
cactus,
capybara,
cat,
chonk,
dragon,
duck,
ghost,
goose,
mushroom,
octopus,
owl,
penguin,
rabbit,
robot,
snail,
turtle,
} from './types.js'
// Each sprite is 5 lines tall, 12 wide (after {E}→1char substitution).
// Multiple frames per species for idle fidget animation.
// Line 0 is the hat slot — must be blank in frames 0-1; frame 2 may use it.
const BODIES: Record<Species, string[][]> = {
[duck]: [
[
' ',
' __ ',
' <({E} )___ ',
' ( ._> ',
' `--´ ',
],
[
' ',
' __ ',
' <({E} )___ ',
' ( ._> ',
' `--´~ ',
],
[
' ',
' __ ',
' <({E} )___ ',
' ( .__> ',
' `--´ ',
],
],
[goose]: [
[
' ',
' ({E}> ',
' || ',
' _(__)_ ',
' ^^^^ ',
],
[
' ',
' ({E}> ',
' || ',
' _(__)_ ',
' ^^^^ ',
],
[
' ',
' ({E}>> ',
' || ',
' _(__)_ ',
' ^^^^ ',
],
],
[blob]: [
[
' ',
' .----. ',
' ( {E} {E} ) ',
' ( ) ',
' `----´ ',
],
[
' ',
' .------. ',
' ( {E} {E} ) ',
' ( ) ',
' `------´ ',
],
[
' ',
' .--. ',
' ({E} {E}) ',
' ( ) ',
' `--´ ',
],
],
[cat]: [
[
' ',
' /\\_/\\ ',
' ( {E} {E}) ',
' ( ω ) ',
' (")_(") ',
],
[
' ',
' /\\_/\\ ',
' ( {E} {E}) ',
' ( ω ) ',
' (")_(")~ ',
],
[
' ',
' /\\-/\\ ',
' ( {E} {E}) ',
' ( ω ) ',
' (")_(") ',
],
],
[dragon]: [
[
' ',
' /^\\ /^\\ ',
' < {E} {E} > ',
' ( ~~ ) ',
' `-vvvv-´ ',
],
[
' ',
' /^\\ /^\\ ',
' < {E} {E} > ',
' ( ) ',
' `-vvvv-´ ',
],
[
' ~ ~ ',
' /^\\ /^\\ ',
' < {E} {E} > ',
' ( ~~ ) ',
' `-vvvv-´ ',
],
],
[octopus]: [
[
' ',
' .----. ',
' ( {E} {E} ) ',
' (______) ',
' /\\/\\/\\/\\ ',
],
[
' ',
' .----. ',
' ( {E} {E} ) ',
' (______) ',
' \\/\\/\\/\\/ ',
],
[
' o ',
' .----. ',
' ( {E} {E} ) ',
' (______) ',
' /\\/\\/\\/\\ ',
],
],
[owl]: [
[
' ',
' /\\ /\\ ',
' (({E})({E})) ',
' ( >< ) ',
' `----´ ',
],
[
' ',
' /\\ /\\ ',
' (({E})({E})) ',
' ( >< ) ',
' .----. ',
],
[
' ',
' /\\ /\\ ',
' (({E})(-)) ',
' ( >< ) ',
' `----´ ',
],
],
[penguin]: [
[
' ',
' .---. ',
' ({E}>{E}) ',
' /( )\\ ',
' `---´ ',
],
[
' ',
' .---. ',
' ({E}>{E}) ',
' |( )| ',
' `---´ ',
],
[
' .---. ',
' ({E}>{E}) ',
' /( )\\ ',
' `---´ ',
' ~ ~ ',
],
],
[turtle]: [
[
' ',
' _,--._ ',
' ( {E} {E} ) ',
' /[______]\\ ',
' `` `` ',
],
[
' ',
' _,--._ ',
' ( {E} {E} ) ',
' /[______]\\ ',
' `` `` ',
],
[
' ',
' _,--._ ',
' ( {E} {E} ) ',
' /[======]\\ ',
' `` `` ',
],
],
[snail]: [
[
' ',
' {E} .--. ',
' \\ ( @ ) ',
' \\_`--´ ',
' ~~~~~~~ ',
],
[
' ',
' {E} .--. ',
' | ( @ ) ',
' \\_`--´ ',
' ~~~~~~~ ',
],
[
' ',
' {E} .--. ',
' \\ ( @ ) ',
' \\_`--´ ',
' ~~~~~~ ',
],
],
[ghost]: [
[
' ',
' .----. ',
' / {E} {E} \\ ',
' | | ',
' ~`~``~`~ ',
],
[
' ',
' .----. ',
' / {E} {E} \\ ',
' | | ',
' `~`~~`~` ',
],
[
' ~ ~ ',
' .----. ',
' / {E} {E} \\ ',
' | | ',
' ~~`~~`~~ ',
],
],
[axolotl]: [
[
' ',
'}~(______)~{',
'}~({E} .. {E})~{',
' ( .--. ) ',
' (_/ \\_) ',
],
[
' ',
'~}(______){~',
'~}({E} .. {E}){~',
' ( .--. ) ',
' (_/ \\_) ',
],
[
' ',
'}~(______)~{',
'}~({E} .. {E})~{',
' ( -- ) ',
' ~_/ \\_~ ',
],
],
[capybara]: [
[
' ',
' n______n ',
' ( {E} {E} ) ',
' ( oo ) ',
' `------´ ',
],
[
' ',
' n______n ',
' ( {E} {E} ) ',
' ( Oo ) ',
' `------´ ',
],
[
' ~ ~ ',
' u______n ',
' ( {E} {E} ) ',
' ( oo ) ',
' `------´ ',
],
],
[cactus]: [
[
' ',
' n ____ n ',
' | |{E} {E}| | ',
' |_| |_| ',
' | | ',
],
[
' ',
' ____ ',
' n |{E} {E}| n ',
' |_| |_| ',
' | | ',
],
[
' n n ',
' | ____ | ',
' | |{E} {E}| | ',
' |_| |_| ',
' | | ',
],
],
[robot]: [
[
' ',
' .[||]. ',
' [ {E} {E} ] ',
' [ ==== ] ',
' `------´ ',
],
[
' ',
' .[||]. ',
' [ {E} {E} ] ',
' [ -==- ] ',
' `------´ ',
],
[
' * ',
' .[||]. ',
' [ {E} {E} ] ',
' [ ==== ] ',
' `------´ ',
],
],
[rabbit]: [
[
' ',
' (\\__/) ',
' ( {E} {E} ) ',
' =( .. )= ',
' (")__(") ',
],
[
' ',
' (|__/) ',
' ( {E} {E} ) ',
' =( .. )= ',
' (")__(") ',
],
[
' ',
' (\\__/) ',
' ( {E} {E} ) ',
' =( . . )= ',
' (")__(") ',
],
],
[mushroom]: [
[
' ',
' .-o-OO-o-. ',
'(__________)',
' |{E} {E}| ',
' |____| ',
],
[
' ',
' .-O-oo-O-. ',
'(__________)',
' |{E} {E}| ',
' |____| ',
],
[
' . o . ',
' .-o-OO-o-. ',
'(__________)',
' |{E} {E}| ',
' |____| ',
],
],
[chonk]: [
[
' ',
' /\\ /\\ ',
' ( {E} {E} ) ',
' ( .. ) ',
' `------´ ',
],
[
' ',
' /\\ /| ',
' ( {E} {E} ) ',
' ( .. ) ',
' `------´ ',
],
[
' ',
' /\\ /\\ ',
' ( {E} {E} ) ',
' ( .. ) ',
' `------´~ ',
],
],
}
const HAT_LINES: Record<Hat, string> = {
none: '',
crown: ' \\^^^/ ',
tophat: ' [___] ',
propeller: ' -+- ',
halo: ' ( ) ',
wizard: ' /^\\ ',
beanie: ' (___) ',
tinyduck: ' ,> ',
}
export function renderSprite(bones: CompanionBones, frame = 0): string[] {
const frames = BODIES[bones.species]
const body = frames[frame % frames.length]!.map(line =>
line.replaceAll('{E}', bones.eye),
)
const lines = [...body]
// Only replace with hat if line 0 is empty (some fidget frames use it for smoke etc)
if (bones.hat !== 'none' && !lines[0]!.trim()) {
lines[0] = HAT_LINES[bones.hat]
}
// Drop blank hat slot — wastes a row in the Card and ambient sprite when
// there's no hat and the frame isn't using it for smoke/antenna/etc.
// Only safe when ALL frames have blank line 0; otherwise heights oscillate.
if (!lines[0]!.trim() && frames.every(f => !f[0]!.trim())) lines.shift()
return lines
}
export function spriteFrameCount(species: Species): number {
return BODIES[species].length
}
export function renderFace(bones: CompanionBones): string {
const eye: Eye = bones.eye
switch (bones.species) {
case duck:
case goose:
return `(${eye}>`
case blob:
return `(${eye}${eye})`
case cat:
return `=${eye}ω${eye}=`
case dragon:
return `<${eye}~${eye}>`
case octopus:
return `~(${eye}${eye})~`
case owl:
return `(${eye})(${eye})`
case penguin:
return `(${eye}>)`
case turtle:
return `[${eye}_${eye}]`
case snail:
return `${eye}(@)`
case ghost:
return `/${eye}${eye}\\`
case axolotl:
return `}${eye}.${eye}{`
case capybara:
return `(${eye}oo${eye})`
case cactus:
return `|${eye} ${eye}|`
case robot:
return `[${eye}${eye}]`
case rabbit:
return `(${eye}..${eye})`
case mushroom:
return `|${eye} ${eye}|`
case chonk:
return `(${eye}.${eye})`
}
}

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export const RARITIES = [
'common',
'uncommon',
'rare',
'epic',
'legendary',
] as const
export type Rarity = (typeof RARITIES)[number]
// One species name collides with a model-codename canary in excluded-strings.txt.
// The check greps build output (not source), so runtime-constructing the value keeps
// the literal out of the bundle while the check stays armed for the actual codename.
// All species encoded uniformly; `as` casts are type-position only (erased pre-bundle).
const c = String.fromCharCode
// biome-ignore format: keep the species list compact
export const duck = c(0x64,0x75,0x63,0x6b) as 'duck'
export const goose = c(0x67, 0x6f, 0x6f, 0x73, 0x65) as 'goose'
export const blob = c(0x62, 0x6c, 0x6f, 0x62) as 'blob'
export const cat = c(0x63, 0x61, 0x74) as 'cat'
export const dragon = c(0x64, 0x72, 0x61, 0x67, 0x6f, 0x6e) as 'dragon'
export const octopus = c(0x6f, 0x63, 0x74, 0x6f, 0x70, 0x75, 0x73) as 'octopus'
export const owl = c(0x6f, 0x77, 0x6c) as 'owl'
export const penguin = c(0x70, 0x65, 0x6e, 0x67, 0x75, 0x69, 0x6e) as 'penguin'
export const turtle = c(0x74, 0x75, 0x72, 0x74, 0x6c, 0x65) as 'turtle'
export const snail = c(0x73, 0x6e, 0x61, 0x69, 0x6c) as 'snail'
export const ghost = c(0x67, 0x68, 0x6f, 0x73, 0x74) as 'ghost'
export const axolotl = c(0x61, 0x78, 0x6f, 0x6c, 0x6f, 0x74, 0x6c) as 'axolotl'
export const capybara = c(
0x63,
0x61,
0x70,
0x79,
0x62,
0x61,
0x72,
0x61,
) as 'capybara'
export const cactus = c(0x63, 0x61, 0x63, 0x74, 0x75, 0x73) as 'cactus'
export const robot = c(0x72, 0x6f, 0x62, 0x6f, 0x74) as 'robot'
export const rabbit = c(0x72, 0x61, 0x62, 0x62, 0x69, 0x74) as 'rabbit'
export const mushroom = c(
0x6d,
0x75,
0x73,
0x68,
0x72,
0x6f,
0x6f,
0x6d,
) as 'mushroom'
export const chonk = c(0x63, 0x68, 0x6f, 0x6e, 0x6b) as 'chonk'
export const SPECIES = [
duck,
goose,
blob,
cat,
dragon,
octopus,
owl,
penguin,
turtle,
snail,
ghost,
axolotl,
capybara,
cactus,
robot,
rabbit,
mushroom,
chonk,
] as const
export type Species = (typeof SPECIES)[number] // biome-ignore format: keep compact
export const EYES = ['·', '✦', '×', '◉', '@', '°'] as const
export type Eye = (typeof EYES)[number]
export const HATS = [
'none',
'crown',
'tophat',
'propeller',
'halo',
'wizard',
'beanie',
'tinyduck',
] as const
export type Hat = (typeof HATS)[number]
export const STAT_NAMES = [
'DEBUGGING',
'PATIENCE',
'CHAOS',
'WISDOM',
'SNARK',
] as const
export type StatName = (typeof STAT_NAMES)[number]
// Deterministic parts — derived from hash(userId)
export type CompanionBones = {
rarity: Rarity
species: Species
eye: Eye
hat: Hat
shiny: boolean
stats: Record<StatName, number>
}
// Model-generated soul — stored in config after first hatch
export type CompanionSoul = {
name: string
personality: string
}
export type Companion = CompanionBones &
CompanionSoul & {
hatchedAt: number
}
// What actually persists in config. Bones are regenerated from hash(userId)
// on every read so species renames don't break stored companions and users
// can't edit their way to a legendary.
export type StoredCompanion = CompanionSoul & { hatchedAt: number }
export const RARITY_WEIGHTS = {
common: 60,
uncommon: 25,
rare: 10,
epic: 4,
legendary: 1,
} as const satisfies Record<Rarity, number>
export const RARITY_STARS = {
common: '★',
uncommon: '★★',
rare: '★★★',
epic: '★★★★',
legendary: '★★★★★',
} as const satisfies Record<Rarity, string>
export const RARITY_COLORS = {
common: 'inactive',
uncommon: 'success',
rare: 'permission',
epic: 'autoAccept',
legendary: 'warning',
} as const satisfies Record<Rarity, keyof import('../utils/theme.js').Theme>

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/**
* CLI exit helpers for subcommand handlers.
*
* Consolidates the 4-5 line "print + lint-suppress + exit" block that was
* copy-pasted ~60 times across `claude mcp *` / `claude plugin *` handlers.
* The `: never` return type lets TypeScript narrow control flow at call sites
* without a trailing `return`.
*/
/* eslint-disable custom-rules/no-process-exit -- centralized CLI exit point */
// `return undefined as never` (not a post-exit throw) — tests spy on
// process.exit and let it return. Call sites write `return cliError(...)`
// where subsequent code would dereference narrowed-away values under mock.
// cliError uses console.error (tests spy on console.error); cliOk uses
// process.stdout.write (tests spy on process.stdout.write — Bun's console.log
// doesn't route through a spied process.stdout.write).
/** Write an error message to stderr (if given) and exit with code 1. */
export function cliError(msg?: string): never {
// biome-ignore lint/suspicious/noConsole: centralized CLI error output
if (msg) console.error(msg)
process.exit(1)
return undefined as never
}
/** Write a message to stdout (if given) and exit with code 0. */
export function cliOk(msg?: string): never {
if (msg) process.stdout.write(msg + '\n')
process.exit(0)
return undefined as never
}

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/**
* Agents subcommand handler — prints the list of configured agents.
* Dynamically imported only when `claude agents` runs.
*/
import {
AGENT_SOURCE_GROUPS,
compareAgentsByName,
getOverrideSourceLabel,
type ResolvedAgent,
resolveAgentModelDisplay,
resolveAgentOverrides,
} from '../../tools/AgentTool/agentDisplay.js'
import {
getActiveAgentsFromList,
getAgentDefinitionsWithOverrides,
} from '../../tools/AgentTool/loadAgentsDir.js'
import { getCwd } from '../../utils/cwd.js'
function formatAgent(agent: ResolvedAgent): string {
const model = resolveAgentModelDisplay(agent)
const parts = [agent.agentType]
if (model) {
parts.push(model)
}
if (agent.memory) {
parts.push(`${agent.memory} memory`)
}
return parts.join(' · ')
}
export async function agentsHandler(): Promise<void> {
const cwd = getCwd()
const { allAgents } = await getAgentDefinitionsWithOverrides(cwd)
const activeAgents = getActiveAgentsFromList(allAgents)
const resolvedAgents = resolveAgentOverrides(allAgents, activeAgents)
const lines: string[] = []
let totalActive = 0
for (const { label, source } of AGENT_SOURCE_GROUPS) {
const groupAgents = resolvedAgents
.filter(a => a.source === source)
.sort(compareAgentsByName)
if (groupAgents.length === 0) continue
lines.push(`${label}:`)
for (const agent of groupAgents) {
if (agent.overriddenBy) {
const winnerSource = getOverrideSourceLabel(agent.overriddenBy)
lines.push(` (shadowed by ${winnerSource}) ${formatAgent(agent)}`)
} else {
lines.push(` ${formatAgent(agent)}`)
totalActive++
}
}
lines.push('')
}
if (lines.length === 0) {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log('No agents found.')
} else {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(`${totalActive} active agents\n`)
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(lines.join('\n').trimEnd())
}
}

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/* eslint-disable custom-rules/no-process-exit -- CLI subcommand handler intentionally exits */
import {
clearAuthRelatedCaches,
performLogout,
} from '../../commands/logout/logout.js'
import {
type AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
logEvent,
} from '../../services/analytics/index.js'
import { getSSLErrorHint } from '../../services/api/errorUtils.js'
import { fetchAndStoreClaudeCodeFirstTokenDate } from '../../services/api/firstTokenDate.js'
import {
createAndStoreApiKey,
fetchAndStoreUserRoles,
refreshOAuthToken,
shouldUseClaudeAIAuth,
storeOAuthAccountInfo,
} from '../../services/oauth/client.js'
import { getOauthProfileFromOauthToken } from '../../services/oauth/getOauthProfile.js'
import { OAuthService } from '../../services/oauth/index.js'
import type { OAuthTokens } from '../../services/oauth/types.js'
import {
clearOAuthTokenCache,
getAnthropicApiKeyWithSource,
getAuthTokenSource,
getOauthAccountInfo,
getSubscriptionType,
isUsing3PServices,
saveOAuthTokensIfNeeded,
validateForceLoginOrg,
} from '../../utils/auth.js'
import { saveGlobalConfig } from '../../utils/config.js'
import { logForDebugging } from '../../utils/debug.js'
import { isRunningOnHomespace } from '../../utils/envUtils.js'
import { errorMessage } from '../../utils/errors.js'
import { logError } from '../../utils/log.js'
import { getAPIProvider } from '../../utils/model/providers.js'
import { getInitialSettings } from '../../utils/settings/settings.js'
import { jsonStringify } from '../../utils/slowOperations.js'
import {
buildAccountProperties,
buildAPIProviderProperties,
} from '../../utils/status.js'
/**
* Shared post-token-acquisition logic. Saves tokens, fetches profile/roles,
* and sets up the local auth state.
*/
export async function installOAuthTokens(tokens: OAuthTokens): Promise<void> {
// Clear old state before saving new credentials
await performLogout({ clearOnboarding: false })
// Reuse pre-fetched profile if available, otherwise fetch fresh
const profile =
tokens.profile ?? (await getOauthProfileFromOauthToken(tokens.accessToken))
if (profile) {
storeOAuthAccountInfo({
accountUuid: profile.account.uuid,
emailAddress: profile.account.email,
organizationUuid: profile.organization.uuid,
displayName: profile.account.display_name || undefined,
hasExtraUsageEnabled:
profile.organization.has_extra_usage_enabled ?? undefined,
billingType: profile.organization.billing_type ?? undefined,
subscriptionCreatedAt:
profile.organization.subscription_created_at ?? undefined,
accountCreatedAt: profile.account.created_at,
})
} else if (tokens.tokenAccount) {
// Fallback to token exchange account data when profile endpoint fails
storeOAuthAccountInfo({
accountUuid: tokens.tokenAccount.uuid,
emailAddress: tokens.tokenAccount.emailAddress,
organizationUuid: tokens.tokenAccount.organizationUuid,
})
}
const storageResult = saveOAuthTokensIfNeeded(tokens)
clearOAuthTokenCache()
if (storageResult.warning) {
logEvent('tengu_oauth_storage_warning', {
warning:
storageResult.warning as AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
})
}
// Roles and first-token-date may fail for limited-scope tokens (e.g.
// inference-only from setup-token). They're not required for core auth.
await fetchAndStoreUserRoles(tokens.accessToken).catch(err =>
logForDebugging(String(err), { level: 'error' }),
)
if (shouldUseClaudeAIAuth(tokens.scopes)) {
await fetchAndStoreClaudeCodeFirstTokenDate().catch(err =>
logForDebugging(String(err), { level: 'error' }),
)
} else {
// API key creation is critical for Console users — let it throw.
const apiKey = await createAndStoreApiKey(tokens.accessToken)
if (!apiKey) {
throw new Error(
'Unable to create API key. The server accepted the request but did not return a key.',
)
}
}
await clearAuthRelatedCaches()
}
export async function authLogin({
email,
sso,
console: useConsole,
claudeai,
}: {
email?: string
sso?: boolean
console?: boolean
claudeai?: boolean
}): Promise<void> {
if (useConsole && claudeai) {
process.stderr.write(
'Error: --console and --claudeai cannot be used together.\n',
)
process.exit(1)
}
const settings = getInitialSettings()
// forceLoginMethod is a hard constraint (enterprise setting) — matches ConsoleOAuthFlow behavior.
// Without it, --console selects Console; --claudeai (or no flag) selects claude.ai.
const loginWithClaudeAi = settings.forceLoginMethod
? settings.forceLoginMethod === 'claudeai'
: !useConsole
const orgUUID = settings.forceLoginOrgUUID
// Fast path: if a refresh token is provided via env var, skip the browser
// OAuth flow and exchange it directly for tokens.
const envRefreshToken = process.env.CLAUDE_CODE_OAUTH_REFRESH_TOKEN
if (envRefreshToken) {
const envScopes = process.env.CLAUDE_CODE_OAUTH_SCOPES
if (!envScopes) {
process.stderr.write(
'CLAUDE_CODE_OAUTH_SCOPES is required when using CLAUDE_CODE_OAUTH_REFRESH_TOKEN.\n' +
'Set it to the space-separated scopes the refresh token was issued with\n' +
'(e.g. "user:inference" or "user:profile user:inference user:sessions:claude_code user:mcp_servers").\n',
)
process.exit(1)
}
const scopes = envScopes.split(/\s+/).filter(Boolean)
try {
logEvent('tengu_login_from_refresh_token', {})
const tokens = await refreshOAuthToken(envRefreshToken, { scopes })
await installOAuthTokens(tokens)
const orgResult = await validateForceLoginOrg()
if (!orgResult.valid) {
process.stderr.write(orgResult.message + '\n')
process.exit(1)
}
// Mark onboarding complete — interactive paths handle this via
// the Onboarding component, but the env var path skips it.
saveGlobalConfig(current => {
if (current.hasCompletedOnboarding) return current
return { ...current, hasCompletedOnboarding: true }
})
logEvent('tengu_oauth_success', {
loginWithClaudeAi: shouldUseClaudeAIAuth(tokens.scopes),
})
process.stdout.write('Login successful.\n')
process.exit(0)
} catch (err) {
logError(err)
const sslHint = getSSLErrorHint(err)
process.stderr.write(
`Login failed: ${errorMessage(err)}\n${sslHint ? sslHint + '\n' : ''}`,
)
process.exit(1)
}
}
const resolvedLoginMethod = sso ? 'sso' : undefined
const oauthService = new OAuthService()
try {
logEvent('tengu_oauth_flow_start', { loginWithClaudeAi })
const result = await oauthService.startOAuthFlow(
async url => {
process.stdout.write('Opening browser to sign in…\n')
process.stdout.write(`If the browser didn't open, visit: ${url}\n`)
},
{
loginWithClaudeAi,
loginHint: email,
loginMethod: resolvedLoginMethod,
orgUUID,
},
)
await installOAuthTokens(result)
const orgResult = await validateForceLoginOrg()
if (!orgResult.valid) {
process.stderr.write(orgResult.message + '\n')
process.exit(1)
}
logEvent('tengu_oauth_success', { loginWithClaudeAi })
process.stdout.write('Login successful.\n')
process.exit(0)
} catch (err) {
logError(err)
const sslHint = getSSLErrorHint(err)
process.stderr.write(
`Login failed: ${errorMessage(err)}\n${sslHint ? sslHint + '\n' : ''}`,
)
process.exit(1)
} finally {
oauthService.cleanup()
}
}
export async function authStatus(opts: {
json?: boolean
text?: boolean
}): Promise<void> {
const { source: authTokenSource, hasToken } = getAuthTokenSource()
const { source: apiKeySource } = getAnthropicApiKeyWithSource()
const hasApiKeyEnvVar =
!!process.env.ANTHROPIC_API_KEY && !isRunningOnHomespace()
const oauthAccount = getOauthAccountInfo()
const subscriptionType = getSubscriptionType()
const using3P = isUsing3PServices()
const loggedIn =
hasToken || apiKeySource !== 'none' || hasApiKeyEnvVar || using3P
// Determine auth method
let authMethod: string = 'none'
if (using3P) {
authMethod = 'third_party'
} else if (authTokenSource === 'claude.ai') {
authMethod = 'claude.ai'
} else if (authTokenSource === 'apiKeyHelper') {
authMethod = 'api_key_helper'
} else if (authTokenSource !== 'none') {
authMethod = 'oauth_token'
} else if (apiKeySource === 'ANTHROPIC_API_KEY' || hasApiKeyEnvVar) {
authMethod = 'api_key'
} else if (apiKeySource === '/login managed key') {
authMethod = 'claude.ai'
}
if (opts.text) {
const properties = [
...buildAccountProperties(),
...buildAPIProviderProperties(),
]
let hasAuthProperty = false
for (const prop of properties) {
const value =
typeof prop.value === 'string'
? prop.value
: Array.isArray(prop.value)
? prop.value.join(', ')
: null
if (value === null || value === 'none') {
continue
}
hasAuthProperty = true
if (prop.label) {
process.stdout.write(`${prop.label}: ${value}\n`)
} else {
process.stdout.write(`${value}\n`)
}
}
if (!hasAuthProperty && hasApiKeyEnvVar) {
process.stdout.write('API key: ANTHROPIC_API_KEY\n')
}
if (!loggedIn) {
process.stdout.write(
'Not logged in. Run claude auth login to authenticate.\n',
)
}
} else {
const apiProvider = getAPIProvider()
const resolvedApiKeySource =
apiKeySource !== 'none'
? apiKeySource
: hasApiKeyEnvVar
? 'ANTHROPIC_API_KEY'
: null
const output: Record<string, string | boolean | null> = {
loggedIn,
authMethod,
apiProvider,
}
if (resolvedApiKeySource) {
output.apiKeySource = resolvedApiKeySource
}
if (authMethod === 'claude.ai') {
output.email = oauthAccount?.emailAddress ?? null
output.orgId = oauthAccount?.organizationUuid ?? null
output.orgName = oauthAccount?.organizationName ?? null
output.subscriptionType = subscriptionType ?? null
}
process.stdout.write(jsonStringify(output, null, 2) + '\n')
}
process.exit(loggedIn ? 0 : 1)
}
export async function authLogout(): Promise<void> {
try {
await performLogout({ clearOnboarding: false })
} catch {
process.stderr.write('Failed to log out.\n')
process.exit(1)
}
process.stdout.write('Successfully logged out from your Anthropic account.\n')
process.exit(0)
}

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/**
* Auto mode subcommand handlers — dump default/merged classifier rules and
* critique user-written rules. Dynamically imported when `claude auto-mode ...` runs.
*/
import { errorMessage } from '../../utils/errors.js'
import {
getMainLoopModel,
parseUserSpecifiedModel,
} from '../../utils/model/model.js'
import {
type AutoModeRules,
buildDefaultExternalSystemPrompt,
getDefaultExternalAutoModeRules,
} from '../../utils/permissions/yoloClassifier.js'
import { getAutoModeConfig } from '../../utils/settings/settings.js'
import { sideQuery } from '../../utils/sideQuery.js'
import { jsonStringify } from '../../utils/slowOperations.js'
function writeRules(rules: AutoModeRules): void {
process.stdout.write(jsonStringify(rules, null, 2) + '\n')
}
export function autoModeDefaultsHandler(): void {
writeRules(getDefaultExternalAutoModeRules())
}
/**
* Dump the effective auto mode config: user settings where provided, external
* defaults otherwise. Per-section REPLACE semantics — matches how
* buildYoloSystemPrompt resolves the external template (a non-empty user
* section replaces that section's defaults entirely; an empty/absent section
* falls through to defaults).
*/
export function autoModeConfigHandler(): void {
const config = getAutoModeConfig()
const defaults = getDefaultExternalAutoModeRules()
writeRules({
allow: config?.allow?.length ? config.allow : defaults.allow,
soft_deny: config?.soft_deny?.length
? config.soft_deny
: defaults.soft_deny,
environment: config?.environment?.length
? config.environment
: defaults.environment,
})
}
const CRITIQUE_SYSTEM_PROMPT =
'You are an expert reviewer of auto mode classifier rules for Claude Code.\n' +
'\n' +
'Claude Code has an "auto mode" that uses an AI classifier to decide whether ' +
'tool calls should be auto-approved or require user confirmation. Users can ' +
'write custom rules in three categories:\n' +
'\n' +
'- **allow**: Actions the classifier should auto-approve\n' +
'- **soft_deny**: Actions the classifier should block (require user confirmation)\n' +
"- **environment**: Context about the user's setup that helps the classifier make decisions\n" +
'\n' +
"Your job is to critique the user's custom rules for clarity, completeness, " +
'and potential issues. The classifier is an LLM that reads these rules as ' +
'part of its system prompt.\n' +
'\n' +
'For each rule, evaluate:\n' +
'1. **Clarity**: Is the rule unambiguous? Could the classifier misinterpret it?\n' +
"2. **Completeness**: Are there gaps or edge cases the rule doesn't cover?\n" +
'3. **Conflicts**: Do any of the rules conflict with each other?\n' +
'4. **Actionability**: Is the rule specific enough for the classifier to act on?\n' +
'\n' +
'Be concise and constructive. Only comment on rules that could be improved. ' +
'If all rules look good, say so.'
export async function autoModeCritiqueHandler(options: {
model?: string
}): Promise<void> {
const config = getAutoModeConfig()
const hasCustomRules =
(config?.allow?.length ?? 0) > 0 ||
(config?.soft_deny?.length ?? 0) > 0 ||
(config?.environment?.length ?? 0) > 0
if (!hasCustomRules) {
process.stdout.write(
'No custom auto mode rules found.\n\n' +
'Add rules to your settings file under autoMode.{allow, soft_deny, environment}.\n' +
'Run `claude auto-mode defaults` to see the default rules for reference.\n',
)
return
}
const model = options.model
? parseUserSpecifiedModel(options.model)
: getMainLoopModel()
const defaults = getDefaultExternalAutoModeRules()
const classifierPrompt = buildDefaultExternalSystemPrompt()
const userRulesSummary =
formatRulesForCritique('allow', config?.allow ?? [], defaults.allow) +
formatRulesForCritique(
'soft_deny',
config?.soft_deny ?? [],
defaults.soft_deny,
) +
formatRulesForCritique(
'environment',
config?.environment ?? [],
defaults.environment,
)
process.stdout.write('Analyzing your auto mode rules…\n\n')
let response
try {
response = await sideQuery({
querySource: 'auto_mode_critique',
model,
system: CRITIQUE_SYSTEM_PROMPT,
skipSystemPromptPrefix: true,
max_tokens: 4096,
messages: [
{
role: 'user',
content:
'Here is the full classifier system prompt that the auto mode classifier receives:\n\n' +
'<classifier_system_prompt>\n' +
classifierPrompt +
'\n</classifier_system_prompt>\n\n' +
"Here are the user's custom rules that REPLACE the corresponding default sections:\n\n" +
userRulesSummary +
'\nPlease critique these custom rules.',
},
],
})
} catch (error) {
process.stderr.write(
'Failed to analyze rules: ' + errorMessage(error) + '\n',
)
process.exitCode = 1
return
}
const textBlock = response.content.find(block => block.type === 'text')
if (textBlock?.type === 'text') {
process.stdout.write(textBlock.text + '\n')
} else {
process.stdout.write('No critique was generated. Please try again.\n')
}
}
function formatRulesForCritique(
section: string,
userRules: string[],
defaultRules: string[],
): string {
if (userRules.length === 0) return ''
const customLines = userRules.map(r => '- ' + r).join('\n')
const defaultLines = defaultRules.map(r => '- ' + r).join('\n')
return (
'## ' +
section +
' (custom rules replacing defaults)\n' +
'Custom:\n' +
customLines +
'\n\n' +
'Defaults being replaced:\n' +
defaultLines +
'\n\n'
)
}

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/**
* Plugin and marketplace subcommand handlers — extracted from main.tsx for lazy loading.
* These are dynamically imported only when `claude plugin *` or `claude plugin marketplace *` runs.
*/
/* eslint-disable custom-rules/no-process-exit -- CLI subcommand handlers intentionally exit */
import figures from 'figures'
import { basename, dirname } from 'path'
import { setUseCoworkPlugins } from '../../bootstrap/state.js'
import {
type AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
type AnalyticsMetadata_I_VERIFIED_THIS_IS_PII_TAGGED,
logEvent,
} from '../../services/analytics/index.js'
import {
disableAllPlugins,
disablePlugin,
enablePlugin,
installPlugin,
uninstallPlugin,
updatePluginCli,
VALID_INSTALLABLE_SCOPES,
VALID_UPDATE_SCOPES,
} from '../../services/plugins/pluginCliCommands.js'
import { getPluginErrorMessage } from '../../types/plugin.js'
import { errorMessage } from '../../utils/errors.js'
import { logError } from '../../utils/log.js'
import { clearAllCaches } from '../../utils/plugins/cacheUtils.js'
import { getInstallCounts } from '../../utils/plugins/installCounts.js'
import {
isPluginInstalled,
loadInstalledPluginsV2,
} from '../../utils/plugins/installedPluginsManager.js'
import {
createPluginId,
loadMarketplacesWithGracefulDegradation,
} from '../../utils/plugins/marketplaceHelpers.js'
import {
addMarketplaceSource,
loadKnownMarketplacesConfig,
refreshAllMarketplaces,
refreshMarketplace,
removeMarketplaceSource,
saveMarketplaceToSettings,
} from '../../utils/plugins/marketplaceManager.js'
import { loadPluginMcpServers } from '../../utils/plugins/mcpPluginIntegration.js'
import { parseMarketplaceInput } from '../../utils/plugins/parseMarketplaceInput.js'
import {
parsePluginIdentifier,
scopeToSettingSource,
} from '../../utils/plugins/pluginIdentifier.js'
import { loadAllPlugins } from '../../utils/plugins/pluginLoader.js'
import type { PluginSource } from '../../utils/plugins/schemas.js'
import {
type ValidationResult,
validateManifest,
validatePluginContents,
} from '../../utils/plugins/validatePlugin.js'
import { jsonStringify } from '../../utils/slowOperations.js'
import { plural } from '../../utils/stringUtils.js'
import { cliError, cliOk } from '../exit.js'
// Re-export for main.tsx to reference in option definitions
export { VALID_INSTALLABLE_SCOPES, VALID_UPDATE_SCOPES }
/**
* Helper function to handle marketplace command errors consistently.
*/
export function handleMarketplaceError(error: unknown, action: string): never {
logError(error)
cliError(`${figures.cross} Failed to ${action}: ${errorMessage(error)}`)
}
function printValidationResult(result: ValidationResult): void {
if (result.errors.length > 0) {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(
`${figures.cross} Found ${result.errors.length} ${plural(result.errors.length, 'error')}:\n`,
)
result.errors.forEach(error => {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(` ${figures.pointer} ${error.path}: ${error.message}`)
})
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log('')
}
if (result.warnings.length > 0) {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(
`${figures.warning} Found ${result.warnings.length} ${plural(result.warnings.length, 'warning')}:\n`,
)
result.warnings.forEach(warning => {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(` ${figures.pointer} ${warning.path}: ${warning.message}`)
})
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log('')
}
}
// plugin validate
export async function pluginValidateHandler(
manifestPath: string,
options: { cowork?: boolean },
): Promise<void> {
if (options.cowork) setUseCoworkPlugins(true)
try {
const result = await validateManifest(manifestPath)
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(`Validating ${result.fileType} manifest: ${result.filePath}\n`)
printValidationResult(result)
// If this is a plugin manifest located inside a .claude-plugin directory,
// also validate the plugin's content files (skills, agents, commands,
// hooks). Works whether the user passed a directory or the plugin.json
// path directly.
let contentResults: ValidationResult[] = []
if (result.fileType === 'plugin') {
const manifestDir = dirname(result.filePath)
if (basename(manifestDir) === '.claude-plugin') {
contentResults = await validatePluginContents(dirname(manifestDir))
for (const r of contentResults) {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(`Validating ${r.fileType}: ${r.filePath}\n`)
printValidationResult(r)
}
}
}
const allSuccess = result.success && contentResults.every(r => r.success)
const hasWarnings =
result.warnings.length > 0 ||
contentResults.some(r => r.warnings.length > 0)
if (allSuccess) {
cliOk(
hasWarnings
? `${figures.tick} Validation passed with warnings`
: `${figures.tick} Validation passed`,
)
} else {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(`${figures.cross} Validation failed`)
process.exit(1)
}
} catch (error) {
logError(error)
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.error(
`${figures.cross} Unexpected error during validation: ${errorMessage(error)}`,
)
process.exit(2)
}
}
// plugin list (lines 5217–5416)
export async function pluginListHandler(options: {
json?: boolean
available?: boolean
cowork?: boolean
}): Promise<void> {
if (options.cowork) setUseCoworkPlugins(true)
logEvent('tengu_plugin_list_command', {})
const installedData = loadInstalledPluginsV2()
const { getPluginEditableScopes } = await import(
'../../utils/plugins/pluginStartupCheck.js'
)
const enabledPlugins = getPluginEditableScopes()
const pluginIds = Object.keys(installedData.plugins)
// Load all plugins once. The JSON and human paths both need:
// - loadErrors (to show load failures per plugin)
// - inline plugins (session-only via --plugin-dir, source='name@inline')
// which are NOT in installedData.plugins (V2 bookkeeping) — they must
// be surfaced separately or `plugin list` silently ignores --plugin-dir.
const {
enabled: loadedEnabled,
disabled: loadedDisabled,
errors: loadErrors,
} = await loadAllPlugins()
const allLoadedPlugins = [...loadedEnabled, ...loadedDisabled]
const inlinePlugins = allLoadedPlugins.filter(p =>
p.source.endsWith('@inline'),
)
// Path-level inline failures (dir doesn't exist, parse error before
// manifest is read) use source='inline[N]'. Plugin-level errors after
// manifest read use source='name@inline'. Collect both for the session
// section — these are otherwise invisible since they have no pluginId.
const inlineLoadErrors = loadErrors.filter(
e => e.source.endsWith('@inline') || e.source.startsWith('inline['),
)
if (options.json) {
// Create a map of plugin source to loaded plugin for quick lookup
const loadedPluginMap = new Map(allLoadedPlugins.map(p => [p.source, p]))
const plugins: Array<{
id: string
version: string
scope: string
enabled: boolean
installPath: string
installedAt?: string
lastUpdated?: string
projectPath?: string
mcpServers?: Record<string, unknown>
errors?: string[]
}> = []
for (const pluginId of pluginIds.sort()) {
const installations = installedData.plugins[pluginId]
if (!installations || installations.length === 0) continue
// Find loading errors for this plugin
const pluginName = parsePluginIdentifier(pluginId).name
const pluginErrors = loadErrors
.filter(
e =>
e.source === pluginId || ('plugin' in e && e.plugin === pluginName),
)
.map(getPluginErrorMessage)
for (const installation of installations) {
// Try to find the loaded plugin to get MCP servers
const loadedPlugin = loadedPluginMap.get(pluginId)
let mcpServers: Record<string, unknown> | undefined
if (loadedPlugin) {
// Load MCP servers if not already cached
const servers =
loadedPlugin.mcpServers ||
(await loadPluginMcpServers(loadedPlugin))
if (servers && Object.keys(servers).length > 0) {
mcpServers = servers
}
}
plugins.push({
id: pluginId,
version: installation.version || 'unknown',
scope: installation.scope,
enabled: enabledPlugins.has(pluginId),
installPath: installation.installPath,
installedAt: installation.installedAt,
lastUpdated: installation.lastUpdated,
projectPath: installation.projectPath,
mcpServers,
errors: pluginErrors.length > 0 ? pluginErrors : undefined,
})
}
}
// Session-only plugins: scope='session', no install metadata.
// Filter from inlineLoadErrors (not loadErrors) so an installed plugin
// with the same manifest name doesn't cross-contaminate via e.plugin.
// The e.plugin fallback catches the dirName≠manifestName case:
// createPluginFromPath tags errors with `${dirName}@inline` but
// plugin.source is reassigned to `${manifest.name}@inline` afterward
// (pluginLoader.ts loadInlinePlugins), so e.source !== p.source when
// a dev checkout dir like ~/code/my-fork/ has manifest name 'cool-plugin'.
for (const p of inlinePlugins) {
const servers = p.mcpServers || (await loadPluginMcpServers(p))
const pErrors = inlineLoadErrors
.filter(
e => e.source === p.source || ('plugin' in e && e.plugin === p.name),
)
.map(getPluginErrorMessage)
plugins.push({
id: p.source,
version: p.manifest.version ?? 'unknown',
scope: 'session',
enabled: p.enabled !== false,
installPath: p.path,
mcpServers:
servers && Object.keys(servers).length > 0 ? servers : undefined,
errors: pErrors.length > 0 ? pErrors : undefined,
})
}
// Path-level inline failures (--plugin-dir /nonexistent): no LoadedPlugin
// exists so the loop above can't surface them. Mirror the human-path
// handling so JSON consumers see the failure instead of silent omission.
for (const e of inlineLoadErrors.filter(e =>
e.source.startsWith('inline['),
)) {
plugins.push({
id: e.source,
version: 'unknown',
scope: 'session',
enabled: false,
installPath: 'path' in e ? e.path : '',
errors: [getPluginErrorMessage(e)],
})
}
// If --available is set, also load available plugins from marketplaces
if (options.available) {
const available: Array<{
pluginId: string
name: string
description?: string
marketplaceName: string
version?: string
source: PluginSource
installCount?: number
}> = []
try {
const [config, installCounts] = await Promise.all([
loadKnownMarketplacesConfig(),
getInstallCounts(),
])
const { marketplaces } =
await loadMarketplacesWithGracefulDegradation(config)
for (const {
name: marketplaceName,
data: marketplace,
} of marketplaces) {
if (marketplace) {
for (const entry of marketplace.plugins) {
const pluginId = createPluginId(entry.name, marketplaceName)
// Only include plugins that are not already installed
if (!isPluginInstalled(pluginId)) {
available.push({
pluginId,
name: entry.name,
description: entry.description,
marketplaceName,
version: entry.version,
source: entry.source,
installCount: installCounts?.get(pluginId),
})
}
}
}
}
} catch {
// Silently ignore marketplace loading errors
}
cliOk(jsonStringify({ installed: plugins, available }, null, 2))
} else {
cliOk(jsonStringify(plugins, null, 2))
}
}
if (pluginIds.length === 0 && inlinePlugins.length === 0) {
// inlineLoadErrors can exist with zero inline plugins (e.g. --plugin-dir
// points at a nonexistent path). Don't early-exit over them — fall
// through to the session section so the failure is visible.
if (inlineLoadErrors.length === 0) {
cliOk(
'No plugins installed. Use `claude plugin install` to install a plugin.',
)
}
}
if (pluginIds.length > 0) {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log('Installed plugins:\n')
}
for (const pluginId of pluginIds.sort()) {
const installations = installedData.plugins[pluginId]
if (!installations || installations.length === 0) continue
// Find loading errors for this plugin
const pluginName = parsePluginIdentifier(pluginId).name
const pluginErrors = loadErrors.filter(
e => e.source === pluginId || ('plugin' in e && e.plugin === pluginName),
)
for (const installation of installations) {
const isEnabled = enabledPlugins.has(pluginId)
const status =
pluginErrors.length > 0
? `${figures.cross} failed to load`
: isEnabled
? `${figures.tick} enabled`
: `${figures.cross} disabled`
const version = installation.version || 'unknown'
const scope = installation.scope
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(` ${figures.pointer} ${pluginId}`)
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(` Version: ${version}`)
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(` Scope: ${scope}`)
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(` Status: ${status}`)
for (const error of pluginErrors) {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(` Error: ${getPluginErrorMessage(error)}`)
}
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log('')
}
}
if (inlinePlugins.length > 0 || inlineLoadErrors.length > 0) {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log('Session-only plugins (--plugin-dir):\n')
for (const p of inlinePlugins) {
// Same dirName≠manifestName fallback as the JSON path above — error
// sources use the dir basename but p.source uses the manifest name.
const pErrors = inlineLoadErrors.filter(
e => e.source === p.source || ('plugin' in e && e.plugin === p.name),
)
const status =
pErrors.length > 0
? `${figures.cross} loaded with errors`
: `${figures.tick} loaded`
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(` ${figures.pointer} ${p.source}`)
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(` Version: ${p.manifest.version ?? 'unknown'}`)
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(` Path: ${p.path}`)
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(` Status: ${status}`)
for (const e of pErrors) {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(` Error: ${getPluginErrorMessage(e)}`)
}
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log('')
}
// Path-level failures: no LoadedPlugin object exists. Show them so
// `--plugin-dir /typo` doesn't just silently produce nothing.
for (const e of inlineLoadErrors.filter(e =>
e.source.startsWith('inline['),
)) {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(
` ${figures.pointer} ${e.source}: ${figures.cross} ${getPluginErrorMessage(e)}\n`,
)
}
}
cliOk()
}
// marketplace add (lines 5433–5487)
export async function marketplaceAddHandler(
source: string,
options: { cowork?: boolean; sparse?: string[]; scope?: string },
): Promise<void> {
if (options.cowork) setUseCoworkPlugins(true)
try {
const parsed = await parseMarketplaceInput(source)
if (!parsed) {
cliError(
`${figures.cross} Invalid marketplace source format. Try: owner/repo, https://..., or ./path`,
)
}
if ('error' in parsed) {
cliError(`${figures.cross} ${parsed.error}`)
}
// Validate scope
const scope = options.scope ?? 'user'
if (scope !== 'user' && scope !== 'project' && scope !== 'local') {
cliError(
`${figures.cross} Invalid scope '${scope}'. Use: user, project, or local`,
)
}
const settingSource = scopeToSettingSource(scope)
let marketplaceSource = parsed
if (options.sparse && options.sparse.length > 0) {
if (
marketplaceSource.source === 'github' ||
marketplaceSource.source === 'git'
) {
marketplaceSource = {
...marketplaceSource,
sparsePaths: options.sparse,
}
} else {
cliError(
`${figures.cross} --sparse is only supported for github and git marketplace sources (got: ${marketplaceSource.source})`,
)
}
}
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log('Adding marketplace...')
const { name, alreadyMaterialized, resolvedSource } =
await addMarketplaceSource(marketplaceSource, message => {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(message)
})
// Write intent to settings at the requested scope
saveMarketplaceToSettings(name, { source: resolvedSource }, settingSource)
clearAllCaches()
let sourceType = marketplaceSource.source
if (marketplaceSource.source === 'github') {
sourceType =
marketplaceSource.repo as AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS
}
logEvent('tengu_marketplace_added', {
source_type:
sourceType as AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
})
cliOk(
alreadyMaterialized
? `${figures.tick} Marketplace '${name}' already on disk — declared in ${scope} settings`
: `${figures.tick} Successfully added marketplace: ${name} (declared in ${scope} settings)`,
)
} catch (error) {
handleMarketplaceError(error, 'add marketplace')
}
}
// marketplace list (lines 5497–5565)
export async function marketplaceListHandler(options: {
json?: boolean
cowork?: boolean
}): Promise<void> {
if (options.cowork) setUseCoworkPlugins(true)
try {
const config = await loadKnownMarketplacesConfig()
const names = Object.keys(config)
if (options.json) {
const marketplaces = names.sort().map(name => {
const marketplace = config[name]
const source = marketplace?.source
return {
name,
source: source?.source,
...(source?.source === 'github' && { repo: source.repo }),
...(source?.source === 'git' && { url: source.url }),
...(source?.source === 'url' && { url: source.url }),
...(source?.source === 'directory' && { path: source.path }),
...(source?.source === 'file' && { path: source.path }),
installLocation: marketplace?.installLocation,
}
})
cliOk(jsonStringify(marketplaces, null, 2))
}
if (names.length === 0) {
cliOk('No marketplaces configured')
}
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log('Configured marketplaces:\n')
names.forEach(name => {
const marketplace = config[name]
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(` ${figures.pointer} ${name}`)
if (marketplace?.source) {
const src = marketplace.source
if (src.source === 'github') {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(` Source: GitHub (${src.repo})`)
} else if (src.source === 'git') {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(` Source: Git (${src.url})`)
} else if (src.source === 'url') {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(` Source: URL (${src.url})`)
} else if (src.source === 'directory') {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(` Source: Directory (${src.path})`)
} else if (src.source === 'file') {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(` Source: File (${src.path})`)
}
}
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log('')
})
cliOk()
} catch (error) {
handleMarketplaceError(error, 'list marketplaces')
}
}
// marketplace remove (lines 5576–5598)
export async function marketplaceRemoveHandler(
name: string,
options: { cowork?: boolean },
): Promise<void> {
if (options.cowork) setUseCoworkPlugins(true)
try {
await removeMarketplaceSource(name)
clearAllCaches()
logEvent('tengu_marketplace_removed', {
marketplace_name:
name as AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
})
cliOk(`${figures.tick} Successfully removed marketplace: ${name}`)
} catch (error) {
handleMarketplaceError(error, 'remove marketplace')
}
}
// marketplace update (lines 5609–5672)
export async function marketplaceUpdateHandler(
name: string | undefined,
options: { cowork?: boolean },
): Promise<void> {
if (options.cowork) setUseCoworkPlugins(true)
try {
if (name) {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(`Updating marketplace: ${name}...`)
await refreshMarketplace(name, message => {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(message)
})
clearAllCaches()
logEvent('tengu_marketplace_updated', {
marketplace_name:
name as AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
})
cliOk(`${figures.tick} Successfully updated marketplace: ${name}`)
} else {
const config = await loadKnownMarketplacesConfig()
const marketplaceNames = Object.keys(config)
if (marketplaceNames.length === 0) {
cliOk('No marketplaces configured')
}
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.log(`Updating ${marketplaceNames.length} marketplace(s)...`)
await refreshAllMarketplaces()
clearAllCaches()
logEvent('tengu_marketplace_updated_all', {
count:
marketplaceNames.length as AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
})
cliOk(
`${figures.tick} Successfully updated ${marketplaceNames.length} marketplace(s)`,
)
}
} catch (error) {
handleMarketplaceError(error, 'update marketplace(s)')
}
}
// plugin install (lines 5690–5721)
export async function pluginInstallHandler(
plugin: string,
options: { scope?: string; cowork?: boolean },
): Promise<void> {
if (options.cowork) setUseCoworkPlugins(true)
const scope = options.scope || 'user'
if (options.cowork && scope !== 'user') {
cliError('--cowork can only be used with user scope')
}
if (
!VALID_INSTALLABLE_SCOPES.includes(
scope as (typeof VALID_INSTALLABLE_SCOPES)[number],
)
) {
cliError(
`Invalid scope: ${scope}. Must be one of: ${VALID_INSTALLABLE_SCOPES.join(', ')}.`,
)
}
// _PROTO_* routes to PII-tagged plugin_name/marketplace_name BQ columns.
// Unredacted plugin arg was previously logged to general-access
// additional_metadata for all users — dropped in favor of the privileged
// column route. marketplace may be undefined (fires before resolution).
const { name, marketplace } = parsePluginIdentifier(plugin)
logEvent('tengu_plugin_install_command', {
_PROTO_plugin_name: name as AnalyticsMetadata_I_VERIFIED_THIS_IS_PII_TAGGED,
...(marketplace && {
_PROTO_marketplace_name:
marketplace as AnalyticsMetadata_I_VERIFIED_THIS_IS_PII_TAGGED,
}),
scope: scope as AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
})
await installPlugin(plugin, scope as 'user' | 'project' | 'local')
}
// plugin uninstall (lines 5738–5769)
export async function pluginUninstallHandler(
plugin: string,
options: { scope?: string; cowork?: boolean; keepData?: boolean },
): Promise<void> {
if (options.cowork) setUseCoworkPlugins(true)
const scope = options.scope || 'user'
if (options.cowork && scope !== 'user') {
cliError('--cowork can only be used with user scope')
}
if (
!VALID_INSTALLABLE_SCOPES.includes(
scope as (typeof VALID_INSTALLABLE_SCOPES)[number],
)
) {
cliError(
`Invalid scope: ${scope}. Must be one of: ${VALID_INSTALLABLE_SCOPES.join(', ')}.`,
)
}
const { name, marketplace } = parsePluginIdentifier(plugin)
logEvent('tengu_plugin_uninstall_command', {
_PROTO_plugin_name: name as AnalyticsMetadata_I_VERIFIED_THIS_IS_PII_TAGGED,
...(marketplace && {
_PROTO_marketplace_name:
marketplace as AnalyticsMetadata_I_VERIFIED_THIS_IS_PII_TAGGED,
}),
scope: scope as AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
})
await uninstallPlugin(
plugin,
scope as 'user' | 'project' | 'local',
options.keepData,
)
}
// plugin enable (lines 5783–5818)
export async function pluginEnableHandler(
plugin: string,
options: { scope?: string; cowork?: boolean },
): Promise<void> {
if (options.cowork) setUseCoworkPlugins(true)
let scope: (typeof VALID_INSTALLABLE_SCOPES)[number] | undefined
if (options.scope) {
if (
!VALID_INSTALLABLE_SCOPES.includes(
options.scope as (typeof VALID_INSTALLABLE_SCOPES)[number],
)
) {
cliError(
`Invalid scope "${options.scope}". Valid scopes: ${VALID_INSTALLABLE_SCOPES.join(', ')}`,
)
}
scope = options.scope as (typeof VALID_INSTALLABLE_SCOPES)[number]
}
if (options.cowork && scope !== undefined && scope !== 'user') {
cliError('--cowork can only be used with user scope')
}
// --cowork always operates at user scope
if (options.cowork && scope === undefined) {
scope = 'user'
}
const { name, marketplace } = parsePluginIdentifier(plugin)
logEvent('tengu_plugin_enable_command', {
_PROTO_plugin_name: name as AnalyticsMetadata_I_VERIFIED_THIS_IS_PII_TAGGED,
...(marketplace && {
_PROTO_marketplace_name:
marketplace as AnalyticsMetadata_I_VERIFIED_THIS_IS_PII_TAGGED,
}),
scope: (scope ??
'auto') as AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
})
await enablePlugin(plugin, scope)
}
// plugin disable (lines 5833–5902)
export async function pluginDisableHandler(
plugin: string | undefined,
options: { scope?: string; cowork?: boolean; all?: boolean },
): Promise<void> {
if (options.all && plugin) {
cliError('Cannot use --all with a specific plugin')
}
if (!options.all && !plugin) {
cliError('Please specify a plugin name or use --all to disable all plugins')
}
if (options.cowork) setUseCoworkPlugins(true)
if (options.all) {
if (options.scope) {
cliError('Cannot use --scope with --all')
}
// No _PROTO_plugin_name here — --all disables all plugins.
// Distinguishable from the specific-plugin branch by plugin_name IS NULL.
logEvent('tengu_plugin_disable_command', {})
await disableAllPlugins()
return
}
let scope: (typeof VALID_INSTALLABLE_SCOPES)[number] | undefined
if (options.scope) {
if (
!VALID_INSTALLABLE_SCOPES.includes(
options.scope as (typeof VALID_INSTALLABLE_SCOPES)[number],
)
) {
cliError(
`Invalid scope "${options.scope}". Valid scopes: ${VALID_INSTALLABLE_SCOPES.join(', ')}`,
)
}
scope = options.scope as (typeof VALID_INSTALLABLE_SCOPES)[number]
}
if (options.cowork && scope !== undefined && scope !== 'user') {
cliError('--cowork can only be used with user scope')
}
// --cowork always operates at user scope
if (options.cowork && scope === undefined) {
scope = 'user'
}
const { name, marketplace } = parsePluginIdentifier(plugin!)
logEvent('tengu_plugin_disable_command', {
_PROTO_plugin_name: name as AnalyticsMetadata_I_VERIFIED_THIS_IS_PII_TAGGED,
...(marketplace && {
_PROTO_marketplace_name:
marketplace as AnalyticsMetadata_I_VERIFIED_THIS_IS_PII_TAGGED,
}),
scope: (scope ??
'auto') as AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
})
await disablePlugin(plugin!, scope)
}
// plugin update (lines 5918–5948)
export async function pluginUpdateHandler(
plugin: string,
options: { scope?: string; cowork?: boolean },
): Promise<void> {
if (options.cowork) setUseCoworkPlugins(true)
const { name, marketplace } = parsePluginIdentifier(plugin)
logEvent('tengu_plugin_update_command', {
_PROTO_plugin_name: name as AnalyticsMetadata_I_VERIFIED_THIS_IS_PII_TAGGED,
...(marketplace && {
_PROTO_marketplace_name:
marketplace as AnalyticsMetadata_I_VERIFIED_THIS_IS_PII_TAGGED,
}),
})
let scope: (typeof VALID_UPDATE_SCOPES)[number] = 'user'
if (options.scope) {
if (
!VALID_UPDATE_SCOPES.includes(
options.scope as (typeof VALID_UPDATE_SCOPES)[number],
)
) {
cliError(
`Invalid scope "${options.scope}". Valid scopes: ${VALID_UPDATE_SCOPES.join(', ')}`,
)
}
scope = options.scope as (typeof VALID_UPDATE_SCOPES)[number]
}
if (options.cowork && scope !== 'user') {
cliError('--cowork can only be used with user scope')
}
await updatePluginCli(plugin, scope)
}

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import { jsonStringify } from '../utils/slowOperations.js'
// JSON.stringify emits U+2028/U+2029 raw (valid per ECMA-404). When the
// output is a single NDJSON line, any receiver that uses JavaScript
// line-terminator semantics (ECMA-262 §11.3 — \n \r U+2028 U+2029) to
// split the stream will cut the JSON mid-string. ProcessTransport now
// silently skips non-JSON lines rather than crashing (gh-28405), but
// the truncated fragment is still lost — the message is silently dropped.
//
// The \uXXXX form is equivalent JSON (parses to the same string) but
// can never be mistaken for a line terminator by ANY receiver. This is
// what ES2019's "Subsume JSON" proposal and Node's util.inspect do.
//
// Single regex with alternation: the callback's one dispatch per match
// is cheaper than two full-string scans.
const JS_LINE_TERMINATORS = /\u2028|\u2029/g
function escapeJsLineTerminators(json: string): string {
return json.replace(JS_LINE_TERMINATORS, c =>
c === '\u2028' ? '\\u2028' : '\\u2029',
)
}
/**
* JSON.stringify for one-message-per-line transports. Escapes U+2028
* LINE SEPARATOR and U+2029 PARAGRAPH SEPARATOR so the serialized output
* cannot be broken by a line-splitting receiver. Output is still valid
* JSON and parses to the same value.
*/
export function ndjsonSafeStringify(value: unknown): string {
return escapeJsLineTerminators(jsonStringify(value))
}

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import type { StdoutMessage } from 'src/entrypoints/sdk/controlTypes.js'
import { PassThrough } from 'stream'
import { URL } from 'url'
import { getSessionId } from '../bootstrap/state.js'
import { getPollIntervalConfig } from '../bridge/pollConfig.js'
import { registerCleanup } from '../utils/cleanupRegistry.js'
import { setCommandLifecycleListener } from '../utils/commandLifecycle.js'
import { isDebugMode, logForDebugging } from '../utils/debug.js'
import { logForDiagnosticsNoPII } from '../utils/diagLogs.js'
import { isEnvTruthy } from '../utils/envUtils.js'
import { errorMessage } from '../utils/errors.js'
import { gracefulShutdown } from '../utils/gracefulShutdown.js'
import { logError } from '../utils/log.js'
import { writeToStdout } from '../utils/process.js'
import { getSessionIngressAuthToken } from '../utils/sessionIngressAuth.js'
import {
setSessionMetadataChangedListener,
setSessionStateChangedListener,
} from '../utils/sessionState.js'
import {
setInternalEventReader,
setInternalEventWriter,
} from '../utils/sessionStorage.js'
import { ndjsonSafeStringify } from './ndjsonSafeStringify.js'
import { StructuredIO } from './structuredIO.js'
import { CCRClient, CCRInitError } from './transports/ccrClient.js'
import { SSETransport } from './transports/SSETransport.js'
import type { Transport } from './transports/Transport.js'
import { getTransportForUrl } from './transports/transportUtils.js'
/**
* Bidirectional streaming for SDK mode with session tracking
* Supports WebSocket transport
*/
export class RemoteIO extends StructuredIO {
private url: URL
private transport: Transport
private inputStream: PassThrough
private readonly isBridge: boolean = false
private readonly isDebug: boolean = false
private ccrClient: CCRClient | null = null
private keepAliveTimer: ReturnType<typeof setInterval> | null = null
constructor(
streamUrl: string,
initialPrompt?: AsyncIterable<string>,
replayUserMessages?: boolean,
) {
const inputStream = new PassThrough({ encoding: 'utf8' })
super(inputStream, replayUserMessages)
this.inputStream = inputStream
this.url = new URL(streamUrl)
// Prepare headers with session token if available
const headers: Record<string, string> = {}
const sessionToken = getSessionIngressAuthToken()
if (sessionToken) {
headers['Authorization'] = `Bearer ${sessionToken}`
} else {
logForDebugging('[remote-io] No session ingress token available', {
level: 'error',
})
}
// Add environment runner version if available (set by Environment Manager)
const erVersion = process.env.CLAUDE_CODE_ENVIRONMENT_RUNNER_VERSION
if (erVersion) {
headers['x-environment-runner-version'] = erVersion
}
// Provide a callback that re-reads the session token dynamically.
// When the parent process refreshes the token (via token file or env var),
// the transport can pick it up on reconnection.
const refreshHeaders = (): Record<string, string> => {
const h: Record<string, string> = {}
const freshToken = getSessionIngressAuthToken()
if (freshToken) {
h['Authorization'] = `Bearer ${freshToken}`
}
const freshErVersion = process.env.CLAUDE_CODE_ENVIRONMENT_RUNNER_VERSION
if (freshErVersion) {
h['x-environment-runner-version'] = freshErVersion
}
return h
}
// Get appropriate transport based on URL protocol
this.transport = getTransportForUrl(
this.url,
headers,
getSessionId(),
refreshHeaders,
)
// Set up data callback
this.isBridge = process.env.CLAUDE_CODE_ENVIRONMENT_KIND === 'bridge'
this.isDebug = isDebugMode()
this.transport.setOnData((data: string) => {
this.inputStream.write(data)
if (this.isBridge && this.isDebug) {
writeToStdout(data.endsWith('\n') ? data : data + '\n')
}
})
// Set up close callback to handle connection failures
this.transport.setOnClose(() => {
// End the input stream to trigger graceful shutdown
this.inputStream.end()
})
// Initialize CCR v2 client (heartbeats, epoch, state reporting, event writes).
// The CCRClient constructor wires the SSE received-ack handler
// synchronously, so new CCRClient() MUST run before transport.connect() —
// otherwise early SSE frames hit an unwired onEventCallback and their
// 'received' delivery acks are silently dropped.
if (isEnvTruthy(process.env.CLAUDE_CODE_USE_CCR_V2)) {
// CCR v2 is SSE+POST by definition. getTransportForUrl returns
// SSETransport under the same env var, but the two checks live in
// different files — assert the invariant so a future decoupling
// fails loudly here instead of confusingly inside CCRClient.
if (!(this.transport instanceof SSETransport)) {
throw new Error(
'CCR v2 requires SSETransport; check getTransportForUrl',
)
}
this.ccrClient = new CCRClient(this.transport, this.url)
const init = this.ccrClient.initialize()
this.restoredWorkerState = init.catch(() => null)
init.catch((error: unknown) => {
logForDiagnosticsNoPII('error', 'cli_worker_lifecycle_init_failed', {
reason: error instanceof CCRInitError ? error.reason : 'unknown',
})
logError(
new Error(`CCRClient initialization failed: ${errorMessage(error)}`),
)
void gracefulShutdown(1, 'other')
})
registerCleanup(async () => this.ccrClient?.close())
// Register internal event writer for transcript persistence.
// When set, sessionStorage writes transcript messages as CCR v2
// internal events instead of v1 Session Ingress.
setInternalEventWriter((eventType, payload, options) =>
this.ccrClient!.writeInternalEvent(eventType, payload, options),
)
// Register internal event readers for session resume.
// When set, hydrateFromCCRv2InternalEvents() can fetch foreground
// and subagent internal events to reconstruct conversation state.
setInternalEventReader(
() => this.ccrClient!.readInternalEvents(),
() => this.ccrClient!.readSubagentInternalEvents(),
)
const LIFECYCLE_TO_DELIVERY = {
started: 'processing',
completed: 'processed',
} as const
setCommandLifecycleListener((uuid, state) => {
this.ccrClient?.reportDelivery(uuid, LIFECYCLE_TO_DELIVERY[state])
})
setSessionStateChangedListener((state, details) => {
this.ccrClient?.reportState(state, details)
})
setSessionMetadataChangedListener(metadata => {
this.ccrClient?.reportMetadata(metadata)
})
}
// Start connection only after all callbacks are wired (setOnData above,
// setOnEvent inside new CCRClient() when CCR v2 is enabled).
void this.transport.connect()
// Push a silent keep_alive frame on a fixed interval so upstream
// proxies and the session-ingress layer don't GC an otherwise-idle
// remote control session. The keep_alive type is filtered before
// reaching any client UI (Query.ts drops it; structuredIO.ts drops it;
// web/iOS/Android never see it in their message loop). Interval comes
// from GrowthBook (tengu_bridge_poll_interval_config
// session_keepalive_interval_v2_ms, default 120s); 0 = disabled.
// Bridge-only: fixes Envoy idle timeout on bridge-topology sessions
// (#21931). byoc workers ran without this before #21931 and do not
// need it — different network path.
const keepAliveIntervalMs =
getPollIntervalConfig().session_keepalive_interval_v2_ms
if (this.isBridge && keepAliveIntervalMs > 0) {
this.keepAliveTimer = setInterval(() => {
logForDebugging('[remote-io] keep_alive sent')
void this.write({ type: 'keep_alive' }).catch(err => {
logForDebugging(
`[remote-io] keep_alive write failed: ${errorMessage(err)}`,
)
})
}, keepAliveIntervalMs)
this.keepAliveTimer.unref?.()
}
// Register for graceful shutdown cleanup
registerCleanup(async () => this.close())
// If initial prompt is provided, send it through the input stream
if (initialPrompt) {
// Convert the initial prompt to the input stream format.
// Chunks from stdin may already contain trailing newlines, so strip
// them before appending our own to avoid double-newline issues that
// cause structuredIO to parse empty lines. String() handles both
// string chunks and Buffer objects from process.stdin.
const stream = this.inputStream
void (async () => {
for await (const chunk of initialPrompt) {
stream.write(String(chunk).replace(/\n$/, '') + '\n')
}
})()
}
}
override flushInternalEvents(): Promise<void> {
return this.ccrClient?.flushInternalEvents() ?? Promise.resolve()
}
override get internalEventsPending(): number {
return this.ccrClient?.internalEventsPending ?? 0
}
/**
* Send output to the transport.
* In bridge mode, control_request messages are always echoed to stdout so the
* bridge parent can detect permission requests. Other messages are echoed only
* in debug mode.
*/
async write(message: StdoutMessage): Promise<void> {
if (this.ccrClient) {
await this.ccrClient.writeEvent(message)
} else {
await this.transport.write(message)
}
if (this.isBridge) {
if (message.type === 'control_request' || this.isDebug) {
writeToStdout(ndjsonSafeStringify(message) + '\n')
}
}
}
/**
* Clean up connections gracefully
*/
close(): void {
if (this.keepAliveTimer) {
clearInterval(this.keepAliveTimer)
this.keepAliveTimer = null
}
this.transport.close()
this.inputStream.end()
}
}

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import { feature } from 'bun:bundle'
import type {
ElicitResult,
JSONRPCMessage,
} from '@modelcontextprotocol/sdk/types.js'
import { randomUUID } from 'crypto'
import type { AssistantMessage } from 'src//types/message.js'
import type {
HookInput,
HookJSONOutput,
PermissionUpdate,
SDKMessage,
SDKUserMessage,
} from 'src/entrypoints/agentSdkTypes.js'
import { SDKControlElicitationResponseSchema } from 'src/entrypoints/sdk/controlSchemas.js'
import type {
SDKControlRequest,
SDKControlResponse,
StdinMessage,
StdoutMessage,
} from 'src/entrypoints/sdk/controlTypes.js'
import type { CanUseToolFn } from 'src/hooks/useCanUseTool.js'
import type { Tool, ToolUseContext } from 'src/Tool.js'
import { type HookCallback, hookJSONOutputSchema } from 'src/types/hooks.js'
import { logForDebugging } from 'src/utils/debug.js'
import { logForDiagnosticsNoPII } from 'src/utils/diagLogs.js'
import { AbortError } from 'src/utils/errors.js'
import {
type Output as PermissionToolOutput,
permissionPromptToolResultToPermissionDecision,
outputSchema as permissionToolOutputSchema,
} from 'src/utils/permissions/PermissionPromptToolResultSchema.js'
import type {
PermissionDecision,
PermissionDecisionReason,
} from 'src/utils/permissions/PermissionResult.js'
import { hasPermissionsToUseTool } from 'src/utils/permissions/permissions.js'
import { writeToStdout } from 'src/utils/process.js'
import { jsonStringify } from 'src/utils/slowOperations.js'
import { z } from 'zod/v4'
import { notifyCommandLifecycle } from '../utils/commandLifecycle.js'
import { normalizeControlMessageKeys } from '../utils/controlMessageCompat.js'
import { executePermissionRequestHooks } from '../utils/hooks.js'
import {
applyPermissionUpdates,
persistPermissionUpdates,
} from '../utils/permissions/PermissionUpdate.js'
import {
notifySessionStateChanged,
type RequiresActionDetails,
type SessionExternalMetadata,
} from '../utils/sessionState.js'
import { jsonParse } from '../utils/slowOperations.js'
import { Stream } from '../utils/stream.js'
import { ndjsonSafeStringify } from './ndjsonSafeStringify.js'
/**
* Synthetic tool name used when forwarding sandbox network permission
* requests via the can_use_tool control_request protocol. SDK hosts
* see this as a normal tool permission prompt.
*/
export const SANDBOX_NETWORK_ACCESS_TOOL_NAME = 'SandboxNetworkAccess'
function serializeDecisionReason(
reason: PermissionDecisionReason | undefined,
): string | undefined {
if (!reason) {
return undefined
}
if (
(feature('BASH_CLASSIFIER') || feature('TRANSCRIPT_CLASSIFIER')) &&
reason.type === 'classifier'
) {
return reason.reason
}
switch (reason.type) {
case 'rule':
case 'mode':
case 'subcommandResults':
case 'permissionPromptTool':
return undefined
case 'hook':
case 'asyncAgent':
case 'sandboxOverride':
case 'workingDir':
case 'safetyCheck':
case 'other':
return reason.reason
}
}
function buildRequiresActionDetails(
tool: Tool,
input: Record<string, unknown>,
toolUseID: string,
requestId: string,
): RequiresActionDetails {
// Per-tool summary methods may throw on malformed input; permission
// handling must not break because of a bad description.
let description: string
try {
description =
tool.getActivityDescription?.(input) ??
tool.getToolUseSummary?.(input) ??
tool.userFacingName(input)
} catch {
description = tool.name
}
return {
tool_name: tool.name,
action_description: description,
tool_use_id: toolUseID,
request_id: requestId,
input,
}
}
type PendingRequest<T> = {
resolve: (result: T) => void
reject: (error: unknown) => void
schema?: z.Schema
request: SDKControlRequest
}
/**
* Provides a structured way to read and write SDK messages from stdio,
* capturing the SDK protocol.
*/
// Maximum number of resolved tool_use IDs to track. Once exceeded, the oldest
// entry is evicted. This bounds memory in very long sessions while keeping
// enough history to catch duplicate control_response deliveries.
const MAX_RESOLVED_TOOL_USE_IDS = 1000
export class StructuredIO {
readonly structuredInput: AsyncGenerator<StdinMessage | SDKMessage>
private readonly pendingRequests = new Map<string, PendingRequest<unknown>>()
// CCR external_metadata read back on worker start; null when the
// transport doesn't restore. Assigned by RemoteIO.
restoredWorkerState: Promise<SessionExternalMetadata | null> =
Promise.resolve(null)
private inputClosed = false
private unexpectedResponseCallback?: (
response: SDKControlResponse,
) => Promise<void>
// Tracks tool_use IDs that have been resolved through the normal permission
// flow (or aborted by a hook). When a duplicate control_response arrives
// after the original was already handled, this Set prevents the orphan
// handler from re-processing it — which would push duplicate assistant
// messages into mutableMessages and cause a 400 "tool_use ids must be unique"
// error from the API.
private readonly resolvedToolUseIds = new Set<string>()
private prependedLines: string[] = []
private onControlRequestSent?: (request: SDKControlRequest) => void
private onControlRequestResolved?: (requestId: string) => void
// sendRequest() and print.ts both enqueue here; the drain loop is the
// only writer. Prevents control_request from overtaking queued stream_events.
readonly outbound = new Stream<StdoutMessage>()
constructor(
private readonly input: AsyncIterable<string>,
private readonly replayUserMessages?: boolean,
) {
this.input = input
this.structuredInput = this.read()
}
/**
* Records a tool_use ID as resolved so that late/duplicate control_response
* messages for the same tool are ignored by the orphan handler.
*/
private trackResolvedToolUseId(request: SDKControlRequest): void {
if (request.request.subtype === 'can_use_tool') {
this.resolvedToolUseIds.add(request.request.tool_use_id)
if (this.resolvedToolUseIds.size > MAX_RESOLVED_TOOL_USE_IDS) {
// Evict the oldest entry (Sets iterate in insertion order)
const first = this.resolvedToolUseIds.values().next().value
if (first !== undefined) {
this.resolvedToolUseIds.delete(first)
}
}
}
}
/** Flush pending internal events. No-op for non-remote IO. Overridden by RemoteIO. */
flushInternalEvents(): Promise<void> {
return Promise.resolve()
}
/** Internal-event queue depth. Overridden by RemoteIO; zero otherwise. */
get internalEventsPending(): number {
return 0
}
/**
* Queue a user turn to be yielded before the next message from this.input.
* Works before iteration starts and mid-stream — read() re-checks
* prependedLines between each yielded message.
*/
prependUserMessage(content: string): void {
this.prependedLines.push(
jsonStringify({
type: 'user',
session_id: '',
message: { role: 'user', content },
parent_tool_use_id: null,
} satisfies SDKUserMessage) + '\n',
)
}
private async *read() {
let content = ''
// Called once before for-await (an empty this.input otherwise skips the
// loop body entirely), then again per block. prependedLines re-check is
// inside the while so a prepend pushed between two messages in the SAME
// block still lands first.
const splitAndProcess = async function* (this: StructuredIO) {
for (;;) {
if (this.prependedLines.length > 0) {
content = this.prependedLines.join('') + content
this.prependedLines = []
}
const newline = content.indexOf('\n')
if (newline === -1) break
const line = content.slice(0, newline)
content = content.slice(newline + 1)
const message = await this.processLine(line)
if (message) {
logForDiagnosticsNoPII('info', 'cli_stdin_message_parsed', {
type: message.type,
})
yield message
}
}
}.bind(this)
yield* splitAndProcess()
for await (const block of this.input) {
content += block
yield* splitAndProcess()
}
if (content) {
const message = await this.processLine(content)
if (message) {
yield message
}
}
this.inputClosed = true
for (const request of this.pendingRequests.values()) {
// Reject all pending requests if the input stream
request.reject(
new Error('Tool permission stream closed before response received'),
)
}
}
getPendingPermissionRequests() {
return Array.from(this.pendingRequests.values())
.map(entry => entry.request)
.filter(pr => pr.request.subtype === 'can_use_tool')
}
setUnexpectedResponseCallback(
callback: (response: SDKControlResponse) => Promise<void>,
): void {
this.unexpectedResponseCallback = callback
}
/**
* Inject a control_response message to resolve a pending permission request.
* Used by the bridge to feed permission responses from claude.ai into the
* SDK permission flow.
*
* Also sends a control_cancel_request to the SDK consumer so its canUseTool
* callback is aborted via the signal — otherwise the callback hangs.
*/
injectControlResponse(response: SDKControlResponse): void {
const requestId = response.response?.request_id
if (!requestId) return
const request = this.pendingRequests.get(requestId)
if (!request) return
this.trackResolvedToolUseId(request.request)
this.pendingRequests.delete(requestId)
// Cancel the SDK consumer's canUseTool callback — the bridge won.
void this.write({
type: 'control_cancel_request',
request_id: requestId,
})
if (response.response.subtype === 'error') {
request.reject(new Error(response.response.error))
} else {
const result = response.response.response
if (request.schema) {
try {
request.resolve(request.schema.parse(result))
} catch (error) {
request.reject(error)
}
} else {
request.resolve({})
}
}
}
/**
* Register a callback invoked whenever a can_use_tool control_request
* is written to stdout. Used by the bridge to forward permission
* requests to claude.ai.
*/
setOnControlRequestSent(
callback: ((request: SDKControlRequest) => void) | undefined,
): void {
this.onControlRequestSent = callback
}
/**
* Register a callback invoked when a can_use_tool control_response arrives
* from the SDK consumer (via stdin). Used by the bridge to cancel the
* stale permission prompt on claude.ai when the SDK consumer wins the race.
*/
setOnControlRequestResolved(
callback: ((requestId: string) => void) | undefined,
): void {
this.onControlRequestResolved = callback
}
private async processLine(
line: string,
): Promise<StdinMessage | SDKMessage | undefined> {
// Skip empty lines (e.g. from double newlines in piped stdin)
if (!line) {
return undefined
}
try {
const message = normalizeControlMessageKeys(jsonParse(line)) as
| StdinMessage
| SDKMessage
if (message.type === 'keep_alive') {
// Silently ignore keep-alive messages
return undefined
}
if (message.type === 'update_environment_variables') {
// Apply environment variable updates directly to process.env.
// Used by bridge session runner for auth token refresh
// (CLAUDE_CODE_SESSION_ACCESS_TOKEN) which must be readable
// by the REPL process itself, not just child Bash commands.
const keys = Object.keys(message.variables)
for (const [key, value] of Object.entries(message.variables)) {
process.env[key] = value
}
logForDebugging(
`[structuredIO] applied update_environment_variables: ${keys.join(', ')}`,
)
return undefined
}
if (message.type === 'control_response') {
// Close lifecycle for every control_response, including duplicates
// and orphans — orphans don't yield to print.ts's main loop, so this
// is the only path that sees them. uuid is server-injected into the
// payload.
const uuid =
'uuid' in message && typeof message.uuid === 'string'
? message.uuid
: undefined
if (uuid) {
notifyCommandLifecycle(uuid, 'completed')
}
const request = this.pendingRequests.get(message.response.request_id)
if (!request) {
// Check if this tool_use was already resolved through the normal
// permission flow. Duplicate control_response deliveries (e.g. from
// WebSocket reconnects) arrive after the original was handled, and
// re-processing them would push duplicate assistant messages into
// the conversation, causing API 400 errors.
const responsePayload =
message.response.subtype === 'success'
? message.response.response
: undefined
const toolUseID = responsePayload?.toolUseID
if (
typeof toolUseID === 'string' &&
this.resolvedToolUseIds.has(toolUseID)
) {
logForDebugging(
`Ignoring duplicate control_response for already-resolved toolUseID=${toolUseID} request_id=${message.response.request_id}`,
)
return undefined
}
if (this.unexpectedResponseCallback) {
await this.unexpectedResponseCallback(message)
}
return undefined // Ignore responses for requests we don't know about
}
this.trackResolvedToolUseId(request.request)
this.pendingRequests.delete(message.response.request_id)
// Notify the bridge when the SDK consumer resolves a can_use_tool
// request, so it can cancel the stale permission prompt on claude.ai.
if (
request.request.request.subtype === 'can_use_tool' &&
this.onControlRequestResolved
) {
this.onControlRequestResolved(message.response.request_id)
}
if (message.response.subtype === 'error') {
request.reject(new Error(message.response.error))
return undefined
}
const result = message.response.response
if (request.schema) {
try {
request.resolve(request.schema.parse(result))
} catch (error) {
request.reject(error)
}
} else {
request.resolve({})
}
// Propagate control responses when replay is enabled
if (this.replayUserMessages) {
return message
}
return undefined
}
if (
message.type !== 'user' &&
message.type !== 'control_request' &&
message.type !== 'assistant' &&
message.type !== 'system'
) {
logForDebugging(`Ignoring unknown message type: ${message.type}`, {
level: 'warn',
})
return undefined
}
if (message.type === 'control_request') {
if (!message.request) {
exitWithMessage(`Error: Missing request on control_request`)
}
return message
}
if (message.type === 'assistant' || message.type === 'system') {
return message
}
if (message.message.role !== 'user') {
exitWithMessage(
`Error: Expected message role 'user', got '${message.message.role}'`,
)
}
return message
} catch (error) {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.error(`Error parsing streaming input line: ${line}: ${error}`)
// eslint-disable-next-line custom-rules/no-process-exit
process.exit(1)
}
}
async write(message: StdoutMessage): Promise<void> {
writeToStdout(ndjsonSafeStringify(message) + '\n')
}
private async sendRequest<Response>(
request: SDKControlRequest['request'],
schema: z.Schema,
signal?: AbortSignal,
requestId: string = randomUUID(),
): Promise<Response> {
const message: SDKControlRequest = {
type: 'control_request',
request_id: requestId,
request,
}
if (this.inputClosed) {
throw new Error('Stream closed')
}
if (signal?.aborted) {
throw new Error('Request aborted')
}
this.outbound.enqueue(message)
if (request.subtype === 'can_use_tool' && this.onControlRequestSent) {
this.onControlRequestSent(message)
}
const aborted = () => {
this.outbound.enqueue({
type: 'control_cancel_request',
request_id: requestId,
})
// Immediately reject the outstanding promise, without
// waiting for the host to acknowledge the cancellation.
const request = this.pendingRequests.get(requestId)
if (request) {
// Track the tool_use ID as resolved before rejecting, so that a
// late response from the host is ignored by the orphan handler.
this.trackResolvedToolUseId(request.request)
request.reject(new AbortError())
}
}
if (signal) {
signal.addEventListener('abort', aborted, {
once: true,
})
}
try {
return await new Promise<Response>((resolve, reject) => {
this.pendingRequests.set(requestId, {
request: {
type: 'control_request',
request_id: requestId,
request,
},
resolve: result => {
resolve(result as Response)
},
reject,
schema,
})
})
} finally {
if (signal) {
signal.removeEventListener('abort', aborted)
}
this.pendingRequests.delete(requestId)
}
}
createCanUseTool(
onPermissionPrompt?: (details: RequiresActionDetails) => void,
): CanUseToolFn {
return async (
tool: Tool,
input: { [key: string]: unknown },
toolUseContext: ToolUseContext,
assistantMessage: AssistantMessage,
toolUseID: string,
forceDecision?: PermissionDecision,
): Promise<PermissionDecision> => {
const mainPermissionResult =
forceDecision ??
(await hasPermissionsToUseTool(
tool,
input,
toolUseContext,
assistantMessage,
toolUseID,
))
// If the tool is allowed or denied, return the result
if (
mainPermissionResult.behavior === 'allow' ||
mainPermissionResult.behavior === 'deny'
) {
return mainPermissionResult
}
// Run PermissionRequest hooks in parallel with the SDK permission
// prompt. In the terminal CLI, hooks race against the interactive
// prompt so that e.g. a hook with --delay 20 doesn't block the UI.
// We need the same behavior here: the SDK host (VS Code, etc.) shows
// its permission dialog immediately while hooks run in the background.
// Whichever resolves first wins; the loser is cancelled/ignored.
// AbortController used to cancel the SDK request if a hook decides first
const hookAbortController = new AbortController()
const parentSignal = toolUseContext.abortController.signal
// Forward parent abort to our local controller
const onParentAbort = () => hookAbortController.abort()
parentSignal.addEventListener('abort', onParentAbort, { once: true })
try {
// Start the hook evaluation (runs in background)
const hookPromise = executePermissionRequestHooksForSDK(
tool.name,
toolUseID,
input,
toolUseContext,
mainPermissionResult.suggestions,
).then(decision => ({ source: 'hook' as const, decision }))
// Start the SDK permission prompt immediately (don't wait for hooks)
const requestId = randomUUID()
onPermissionPrompt?.(
buildRequiresActionDetails(tool, input, toolUseID, requestId),
)
const sdkPromise = this.sendRequest<PermissionToolOutput>(
{
subtype: 'can_use_tool',
tool_name: tool.name,
input,
permission_suggestions: mainPermissionResult.suggestions,
blocked_path: mainPermissionResult.blockedPath,
decision_reason: serializeDecisionReason(
mainPermissionResult.decisionReason,
),
tool_use_id: toolUseID,
agent_id: toolUseContext.agentId,
},
permissionToolOutputSchema(),
hookAbortController.signal,
requestId,
).then(result => ({ source: 'sdk' as const, result }))
// Race: hook completion vs SDK prompt response.
// The hook promise always resolves (never rejects), returning
// undefined if no hook made a decision.
const winner = await Promise.race([hookPromise, sdkPromise])
if (winner.source === 'hook') {
if (winner.decision) {
// Hook decided — abort the pending SDK request.
// Suppress the expected AbortError rejection from sdkPromise.
sdkPromise.catch(() => {})
hookAbortController.abort()
return winner.decision
}
// Hook passed through (no decision) — wait for the SDK prompt
const sdkResult = await sdkPromise
return permissionPromptToolResultToPermissionDecision(
sdkResult.result,
tool,
input,
toolUseContext,
)
}
// SDK prompt responded first — use its result (hook still running
// in background but its result will be ignored)
return permissionPromptToolResultToPermissionDecision(
winner.result,
tool,
input,
toolUseContext,
)
} catch (error) {
return permissionPromptToolResultToPermissionDecision(
{
behavior: 'deny',
message: `Tool permission request failed: ${error}`,
toolUseID,
},
tool,
input,
toolUseContext,
)
} finally {
// Only transition back to 'running' if no other permission prompts
// are pending (concurrent tool execution can have multiple in-flight).
if (this.getPendingPermissionRequests().length === 0) {
notifySessionStateChanged('running')
}
parentSignal.removeEventListener('abort', onParentAbort)
}
}
}
createHookCallback(callbackId: string, timeout?: number): HookCallback {
return {
type: 'callback',
timeout,
callback: async (
input: HookInput,
toolUseID: string | null,
abort: AbortSignal | undefined,
): Promise<HookJSONOutput> => {
try {
const result = await this.sendRequest<HookJSONOutput>(
{
subtype: 'hook_callback',
callback_id: callbackId,
input,
tool_use_id: toolUseID || undefined,
},
hookJSONOutputSchema(),
abort,
)
return result
} catch (error) {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.error(`Error in hook callback ${callbackId}:`, error)
return {}
}
},
}
}
/**
* Sends an elicitation request to the SDK consumer and returns the response.
*/
async handleElicitation(
serverName: string,
message: string,
requestedSchema?: Record<string, unknown>,
signal?: AbortSignal,
mode?: 'form' | 'url',
url?: string,
elicitationId?: string,
): Promise<ElicitResult> {
try {
const result = await this.sendRequest<ElicitResult>(
{
subtype: 'elicitation',
mcp_server_name: serverName,
message,
mode,
url,
elicitation_id: elicitationId,
requested_schema: requestedSchema,
},
SDKControlElicitationResponseSchema(),
signal,
)
return result
} catch {
return { action: 'cancel' as const }
}
}
/**
* Creates a SandboxAskCallback that forwards sandbox network permission
* requests to the SDK host as can_use_tool control_requests.
*
* This piggybacks on the existing can_use_tool protocol with a synthetic
* tool name so that SDK hosts (VS Code, CCR, etc.) can prompt the user
* for network access without requiring a new protocol subtype.
*/
createSandboxAskCallback(): (hostPattern: {
host: string
port?: number
}) => Promise<boolean> {
return async (hostPattern): Promise<boolean> => {
try {
const result = await this.sendRequest<PermissionToolOutput>(
{
subtype: 'can_use_tool',
tool_name: SANDBOX_NETWORK_ACCESS_TOOL_NAME,
input: { host: hostPattern.host },
tool_use_id: randomUUID(),
description: `Allow network connection to ${hostPattern.host}?`,
},
permissionToolOutputSchema(),
)
return result.behavior === 'allow'
} catch {
// If the request fails (stream closed, abort, etc.), deny the connection
return false
}
}
}
/**
* Sends an MCP message to an SDK server and waits for the response
*/
async sendMcpMessage(
serverName: string,
message: JSONRPCMessage,
): Promise<JSONRPCMessage> {
const response = await this.sendRequest<{ mcp_response: JSONRPCMessage }>(
{
subtype: 'mcp_message',
server_name: serverName,
message,
},
z.object({
mcp_response: z.any() as z.Schema<JSONRPCMessage>,
}),
)
return response.mcp_response
}
}
function exitWithMessage(message: string): never {
// biome-ignore lint/suspicious/noConsole:: intentional console output
console.error(message)
// eslint-disable-next-line custom-rules/no-process-exit
process.exit(1)
}
/**
* Execute PermissionRequest hooks and return a decision if one is made.
* Returns undefined if no hook made a decision.
*/
async function executePermissionRequestHooksForSDK(
toolName: string,
toolUseID: string,
input: Record<string, unknown>,
toolUseContext: ToolUseContext,
suggestions: PermissionUpdate[] | undefined,
): Promise<PermissionDecision | undefined> {
const appState = toolUseContext.getAppState()
const permissionMode = appState.toolPermissionContext.mode
// Iterate directly over the generator instead of using `all`
const hookGenerator = executePermissionRequestHooks(
toolName,
toolUseID,
input,
toolUseContext,
permissionMode,
suggestions,
toolUseContext.abortController.signal,
)
for await (const hookResult of hookGenerator) {
if (
hookResult.permissionRequestResult &&
(hookResult.permissionRequestResult.behavior === 'allow' ||
hookResult.permissionRequestResult.behavior === 'deny')
) {
const decision = hookResult.permissionRequestResult
if (decision.behavior === 'allow') {
const finalInput = decision.updatedInput || input
// Apply permission updates if provided by hook ("always allow")
const permissionUpdates = decision.updatedPermissions ?? []
if (permissionUpdates.length > 0) {
persistPermissionUpdates(permissionUpdates)
const currentAppState = toolUseContext.getAppState()
const updatedContext = applyPermissionUpdates(
currentAppState.toolPermissionContext,
permissionUpdates,
)
// Update permission context via setAppState
toolUseContext.setAppState(prev => {
if (prev.toolPermissionContext === updatedContext) return prev
return { ...prev, toolPermissionContext: updatedContext }
})
}
return {
behavior: 'allow',
updatedInput: finalInput,
userModified: false,
decisionReason: {
type: 'hook',
hookName: 'PermissionRequest',
},
}
} else {
// Hook denied the permission
return {
behavior: 'deny',
message:
decision.message || 'Permission denied by PermissionRequest hook',
decisionReason: {
type: 'hook',
hookName: 'PermissionRequest',
},
}
}
}
}
return undefined
}

282
src/cli/transports/HybridTransport.ts Normal file
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import axios, { type AxiosError } from 'axios'
import type { StdoutMessage } from 'src/entrypoints/sdk/controlTypes.js'
import { logForDebugging } from '../../utils/debug.js'
import { logForDiagnosticsNoPII } from '../../utils/diagLogs.js'
import { getSessionIngressAuthToken } from '../../utils/sessionIngressAuth.js'
import { SerialBatchEventUploader } from './SerialBatchEventUploader.js'
import {
WebSocketTransport,
type WebSocketTransportOptions,
} from './WebSocketTransport.js'
const BATCH_FLUSH_INTERVAL_MS = 100
// Per-attempt POST timeout. Bounds how long a single stuck POST can block
// the serialized queue. Without this, a hung connection stalls all writes.
const POST_TIMEOUT_MS = 15_000
// Grace period for queued writes on close(). Covers a healthy POST (~100ms)
// plus headroom; best-effort, not a delivery guarantee under degraded network.
// Void-ed (nothing awaits it) so this is a last resort — replBridge teardown
// now closes AFTER archive so archive latency is the primary drain window.
// NOTE: gracefulShutdown's cleanup budget is 2s (not the 5s outer failsafe);
// 3s here exceeds it, but the process lives ~2s longer for hooks+analytics.
const CLOSE_GRACE_MS = 3000
/**
* Hybrid transport: WebSocket for reads, HTTP POST for writes.
*
* Write flow:
*
* write(stream_event) ─┐
* │ (100ms timer)
* │
* ▼
* write(other) ────► uploader.enqueue() (SerialBatchEventUploader)
* ▲ │
* writeBatch() ────────┘ │ serial, batched, retries indefinitely,
* │ backpressure at maxQueueSize
* ▼
* postOnce() (single HTTP POST, throws on retryable)
*
* stream_event messages accumulate in streamEventBuffer for up to 100ms
* before enqueue (reduces POST count for high-volume content deltas). A
* non-stream write flushes any buffered stream_events first to preserve order.
*
* Serialization + retry + backpressure are delegated to SerialBatchEventUploader
* (same primitive CCR uses). At most one POST in-flight; events arriving during
* a POST batch into the next one. On failure, the uploader re-queues and retries
* with exponential backoff + jitter. If the queue fills past maxQueueSize,
* enqueue() blocks — giving awaiting callers backpressure.
*
* Why serialize? Bridge mode fires writes via `void transport.write()`
* (fire-and-forget). Without this, concurrent POSTs → concurrent Firestore
* writes to the same document → collisions → retry storms → pages oncall.
*/
export class HybridTransport extends WebSocketTransport {
private postUrl: string
private uploader: SerialBatchEventUploader<StdoutMessage>
// stream_event delay buffer — accumulates content deltas for up to
// BATCH_FLUSH_INTERVAL_MS before enqueueing (reduces POST count)
private streamEventBuffer: StdoutMessage[] = []
private streamEventTimer: ReturnType<typeof setTimeout> | null = null
constructor(
url: URL,
headers: Record<string, string> = {},
sessionId?: string,
refreshHeaders?: () => Record<string, string>,
options?: WebSocketTransportOptions & {
maxConsecutiveFailures?: number
onBatchDropped?: (batchSize: number, failures: number) => void
},
) {
super(url, headers, sessionId, refreshHeaders, options)
const { maxConsecutiveFailures, onBatchDropped } = options ?? {}
this.postUrl = convertWsUrlToPostUrl(url)
this.uploader = new SerialBatchEventUploader<StdoutMessage>({
// Large cap — session-ingress accepts arbitrary batch sizes. Events
// naturally batch during in-flight POSTs; this just bounds the payload.
maxBatchSize: 500,
// Bridge callers use `void transport.write()` — backpressure doesn't
// apply (they don't await). A batch >maxQueueSize deadlocks (see
// SerialBatchEventUploader backpressure check). So set it high enough
// to be a memory bound only. Wire real backpressure in a follow-up
// once callers await.
maxQueueSize: 100_000,
baseDelayMs: 500,
maxDelayMs: 8000,
jitterMs: 1000,
// Optional cap so a persistently-failing server can't pin the drain
// loop for the lifetime of the process. Undefined = indefinite retry.
// replBridge sets this; the 1P transportUtils path does not.
maxConsecutiveFailures,
onBatchDropped: (batchSize, failures) => {
logForDiagnosticsNoPII(
'error',
'cli_hybrid_batch_dropped_max_failures',
{
batchSize,
failures,
},
)
onBatchDropped?.(batchSize, failures)
},
send: batch => this.postOnce(batch),
})
logForDebugging(`HybridTransport: POST URL = ${this.postUrl}`)
logForDiagnosticsNoPII('info', 'cli_hybrid_transport_initialized')
}
/**
* Enqueue a message and wait for the queue to drain. Returning flush()
* preserves the contract that `await write()` resolves after the event is
* POSTed (relied on by tests and replBridge's initial flush). Fire-and-forget
* callers (`void transport.write()`) are unaffected — they don't await,
* so the later resolution doesn't add latency.
*/
override async write(message: StdoutMessage): Promise<void> {
if (message.type === 'stream_event') {
// Delay: accumulate stream_events briefly before enqueueing.
// Promise resolves immediately — callers don't await stream_events.
this.streamEventBuffer.push(message)
if (!this.streamEventTimer) {
this.streamEventTimer = setTimeout(
() => this.flushStreamEvents(),
BATCH_FLUSH_INTERVAL_MS,
)
}
return
}
// Immediate: flush any buffered stream_events (ordering), then this event.
await this.uploader.enqueue([...this.takeStreamEvents(), message])
return this.uploader.flush()
}
async writeBatch(messages: StdoutMessage[]): Promise<void> {
await this.uploader.enqueue([...this.takeStreamEvents(), ...messages])
return this.uploader.flush()
}
/** Snapshot before/after writeBatch() to detect silent drops. */
get droppedBatchCount(): number {
return this.uploader.droppedBatchCount
}
/**
* Block until all pending events are POSTed. Used by bridge's initial
* history flush so onStateChange('connected') fires after persistence.
*/
flush(): Promise<void> {
void this.uploader.enqueue(this.takeStreamEvents())
return this.uploader.flush()
}
/** Take ownership of buffered stream_events and clear the delay timer. */
private takeStreamEvents(): StdoutMessage[] {
if (this.streamEventTimer) {
clearTimeout(this.streamEventTimer)
this.streamEventTimer = null
}
const buffered = this.streamEventBuffer
this.streamEventBuffer = []
return buffered
}
/** Delay timer fired — enqueue accumulated stream_events. */
private flushStreamEvents(): void {
this.streamEventTimer = null
void this.uploader.enqueue(this.takeStreamEvents())
}
override close(): void {
if (this.streamEventTimer) {
clearTimeout(this.streamEventTimer)
this.streamEventTimer = null
}
this.streamEventBuffer = []
// Grace period for queued writes — fallback. replBridge teardown now
// awaits archive between write and close (see CLOSE_GRACE_MS), so
// archive latency is the primary drain window and this is a last
// resort. Keep close() sync (returns immediately) but defer
// uploader.close() so any remaining queue gets a chance to finish.
const uploader = this.uploader
let graceTimer: ReturnType<typeof setTimeout> | undefined
void Promise.race([
uploader.flush(),
new Promise<void>(r => {
// eslint-disable-next-line no-restricted-syntax -- need timer ref for clearTimeout
graceTimer = setTimeout(r, CLOSE_GRACE_MS)
}),
]).finally(() => {
clearTimeout(graceTimer)
uploader.close()
})
super.close()
}
/**
* Single-attempt POST. Throws on retryable failures (429, 5xx, network)
* so SerialBatchEventUploader re-queues and retries. Returns on success
* and on permanent failures (4xx non-429, no token) so the uploader moves on.
*/
private async postOnce(events: StdoutMessage[]): Promise<void> {
const sessionToken = getSessionIngressAuthToken()
if (!sessionToken) {
logForDebugging('HybridTransport: No session token available for POST')
logForDiagnosticsNoPII('warn', 'cli_hybrid_post_no_token')
return
}
const headers: Record<string, string> = {
Authorization: `Bearer ${sessionToken}`,
'Content-Type': 'application/json',
}
let response
try {
response = await axios.post(
this.postUrl,
{ events },
{
headers,
validateStatus: () => true,
timeout: POST_TIMEOUT_MS,
},
)
} catch (error) {
const axiosError = error as AxiosError
logForDebugging(`HybridTransport: POST error: ${axiosError.message}`)
logForDiagnosticsNoPII('warn', 'cli_hybrid_post_network_error')
throw error
}
if (response.status >= 200 && response.status < 300) {
logForDebugging(`HybridTransport: POST success count=${events.length}`)
return
}
// 4xx (except 429) are permanent — drop, don't retry.
if (
response.status >= 400 &&
response.status < 500 &&
response.status !== 429
) {
logForDebugging(
`HybridTransport: POST returned ${response.status} (permanent), dropping`,
)
logForDiagnosticsNoPII('warn', 'cli_hybrid_post_client_error', {
status: response.status,
})
return
}
// 429 / 5xx — retryable. Throw so uploader re-queues and backs off.
logForDebugging(
`HybridTransport: POST returned ${response.status} (retryable)`,
)
logForDiagnosticsNoPII('warn', 'cli_hybrid_post_retryable_error', {
status: response.status,
})
throw new Error(`POST failed with ${response.status}`)
}
}
/**
* Convert a WebSocket URL to the HTTP POST endpoint URL.
* From: wss://api.example.com/v2/session_ingress/ws/<session_id>
* To: https://api.example.com/v2/session_ingress/session/<session_id>/events
*/
function convertWsUrlToPostUrl(wsUrl: URL): string {
const protocol = wsUrl.protocol === 'wss:' ? 'https:' : 'http:'
// Replace /ws/ with /session/ and append /events
let pathname = wsUrl.pathname
pathname = pathname.replace('/ws/', '/session/')
if (!pathname.endsWith('/events')) {
pathname = pathname.endsWith('/')
? pathname + 'events'
: pathname + '/events'
}
return `${protocol}//${wsUrl.host}${pathname}${wsUrl.search}`
}

711
src/cli/transports/SSETransport.ts Normal file
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import axios, { type AxiosError } from 'axios'
import type { StdoutMessage } from 'src/entrypoints/sdk/controlTypes.js'
import { logForDebugging } from '../../utils/debug.js'
import { logForDiagnosticsNoPII } from '../../utils/diagLogs.js'
import { errorMessage } from '../../utils/errors.js'
import { getSessionIngressAuthHeaders } from '../../utils/sessionIngressAuth.js'
import { sleep } from '../../utils/sleep.js'
import { jsonParse, jsonStringify } from '../../utils/slowOperations.js'
import { getClaudeCodeUserAgent } from '../../utils/userAgent.js'
import type { Transport } from './Transport.js'
// ---------------------------------------------------------------------------
// Configuration
// ---------------------------------------------------------------------------
const RECONNECT_BASE_DELAY_MS = 1000
const RECONNECT_MAX_DELAY_MS = 30_000
/** Time budget for reconnection attempts before giving up (10 minutes). */
const RECONNECT_GIVE_UP_MS = 600_000
/** Server sends keepalives every 15s; treat connection as dead after 45s of silence. */
const LIVENESS_TIMEOUT_MS = 45_000
/**
* HTTP status codes that indicate a permanent server-side rejection.
* The transport transitions to 'closed' immediately without retrying.
*/
const PERMANENT_HTTP_CODES = new Set([401, 403, 404])
// POST retry configuration (matches HybridTransport)
const POST_MAX_RETRIES = 10
const POST_BASE_DELAY_MS = 500
const POST_MAX_DELAY_MS = 8000
/** Hoisted TextDecoder options to avoid per-chunk allocation in readStream. */
const STREAM_DECODE_OPTS: TextDecodeOptions = { stream: true }
/** Hoisted axios validateStatus callback to avoid per-request closure allocation. */
function alwaysValidStatus(): boolean {
return true
}
// ---------------------------------------------------------------------------
// SSE Frame Parser
// ---------------------------------------------------------------------------
type SSEFrame = {
event?: string
id?: string
data?: string
}
/**
* Incrementally parse SSE frames from a text buffer.
* Returns parsed frames and the remaining (incomplete) buffer.
*
* @internal exported for testing
*/
export function parseSSEFrames(buffer: string): {
frames: SSEFrame[]
remaining: string
} {
const frames: SSEFrame[] = []
let pos = 0
// SSE frames are delimited by double newlines
let idx: number
while ((idx = buffer.indexOf('\n\n', pos)) !== -1) {
const rawFrame = buffer.slice(pos, idx)
pos = idx + 2
// Skip empty frames
if (!rawFrame.trim()) continue
const frame: SSEFrame = {}
let isComment = false
for (const line of rawFrame.split('\n')) {
if (line.startsWith(':')) {
// SSE comment (e.g., `:keepalive`)
isComment = true
continue
}
const colonIdx = line.indexOf(':')
if (colonIdx === -1) continue
const field = line.slice(0, colonIdx)
// Per SSE spec, strip one leading space after colon if present
const value =
line[colonIdx + 1] === ' '
? line.slice(colonIdx + 2)
: line.slice(colonIdx + 1)
switch (field) {
case 'event':
frame.event = value
break
case 'id':
frame.id = value
break
case 'data':
// Per SSE spec, multiple data: lines are concatenated with \n
frame.data = frame.data ? frame.data + '\n' + value : value
break
// Ignore other fields (retry:, etc.)
}
}
// Only emit frames that have data (or are pure comments which reset liveness)
if (frame.data || isComment) {
frames.push(frame)
}
}
return { frames, remaining: buffer.slice(pos) }
}
// ---------------------------------------------------------------------------
// Types
// ---------------------------------------------------------------------------
type SSETransportState =
| 'idle'
| 'connected'
| 'reconnecting'
| 'closing'
| 'closed'
/**
* Payload for `event: client_event` frames, matching the StreamClientEvent
* proto message in session_stream.proto. This is the only event type sent
* to worker subscribers — delivery_update, session_update, ephemeral_event,
* and catch_up_truncated are client-channel-only (see notifier.go and
* event_stream.go SubscriberClient guard).
*/
export type StreamClientEvent = {
event_id: string
sequence_num: number
event_type: string
source: string
payload: Record<string, unknown>
created_at: string
}
// ---------------------------------------------------------------------------
// SSETransport
// ---------------------------------------------------------------------------
/**
* Transport that uses SSE for reading and HTTP POST for writing.
*
* Reads events via Server-Sent Events from the CCR v2 event stream endpoint.
* Writes events via HTTP POST with retry logic (same pattern as HybridTransport).
*
* Each `event: client_event` frame carries a StreamClientEvent proto JSON
* directly in `data:`. The transport extracts `payload` and passes it to
* `onData` as newline-delimited JSON for StructuredIO consumers.
*
* Supports automatic reconnection with exponential backoff and Last-Event-ID
* for resumption after disconnection.
*/
export class SSETransport implements Transport {
private state: SSETransportState = 'idle'
private onData?: (data: string) => void
private onCloseCallback?: (closeCode?: number) => void
private onEventCallback?: (event: StreamClientEvent) => void
private headers: Record<string, string>
private sessionId?: string
private refreshHeaders?: () => Record<string, string>
private readonly getAuthHeaders: () => Record<string, string>
// SSE connection state
private abortController: AbortController | null = null
private lastSequenceNum = 0
private seenSequenceNums = new Set<number>()
// Reconnection state
private reconnectAttempts = 0
private reconnectStartTime: number | null = null
private reconnectTimer: NodeJS.Timeout | null = null
// Liveness detection
private livenessTimer: NodeJS.Timeout | null = null
// POST URL (derived from SSE URL)
private postUrl: string
// Runtime epoch for CCR v2 event format
constructor(
private readonly url: URL,
headers: Record<string, string> = {},
sessionId?: string,
refreshHeaders?: () => Record<string, string>,
initialSequenceNum?: number,
/**
* Per-instance auth header source. Omit to read the process-wide
* CLAUDE_CODE_SESSION_ACCESS_TOKEN (single-session callers). Required
* for concurrent multi-session callers — the env-var path is a process
* global and would stomp across sessions.
*/
getAuthHeaders?: () => Record<string, string>,
) {
this.headers = headers
this.sessionId = sessionId
this.refreshHeaders = refreshHeaders
this.getAuthHeaders = getAuthHeaders ?? getSessionIngressAuthHeaders
this.postUrl = convertSSEUrlToPostUrl(url)
// Seed with a caller-provided high-water mark so the first connect()
// sends from_sequence_num / Last-Event-ID. Without this, a fresh
// SSETransport always asks the server to replay from sequence 0 —
// the entire session history on every transport swap.
if (initialSequenceNum !== undefined && initialSequenceNum > 0) {
this.lastSequenceNum = initialSequenceNum
}
logForDebugging(`SSETransport: SSE URL = ${url.href}`)
logForDebugging(`SSETransport: POST URL = ${this.postUrl}`)
logForDiagnosticsNoPII('info', 'cli_sse_transport_initialized')
}
/**
* High-water mark of sequence numbers seen on this stream. Callers that
* recreate the transport (e.g. replBridge onWorkReceived) read this before
* close() and pass it as `initialSequenceNum` to the next instance so the
* server resumes from the right point instead of replaying everything.
*/
getLastSequenceNum(): number {
return this.lastSequenceNum
}
async connect(): Promise<void> {
if (this.state !== 'idle' && this.state !== 'reconnecting') {
logForDebugging(
`SSETransport: Cannot connect, current state is ${this.state}`,
{ level: 'error' },
)
logForDiagnosticsNoPII('error', 'cli_sse_connect_failed')
return
}
this.state = 'reconnecting'
const connectStartTime = Date.now()
// Build SSE URL with sequence number for resumption
const sseUrl = new URL(this.url.href)
if (this.lastSequenceNum > 0) {
sseUrl.searchParams.set('from_sequence_num', String(this.lastSequenceNum))
}
// Build headers -- use fresh auth headers (supports Cookie for session keys).
// Remove stale Authorization header from this.headers when Cookie auth is used,
// since sending both confuses the auth interceptor.
const authHeaders = this.getAuthHeaders()
const headers: Record<string, string> = {
...this.headers,
...authHeaders,
Accept: 'text/event-stream',
'anthropic-version': '2023-06-01',
'User-Agent': getClaudeCodeUserAgent(),
}
if (authHeaders['Cookie']) {
delete headers['Authorization']
}
if (this.lastSequenceNum > 0) {
headers['Last-Event-ID'] = String(this.lastSequenceNum)
}
logForDebugging(`SSETransport: Opening ${sseUrl.href}`)
logForDiagnosticsNoPII('info', 'cli_sse_connect_opening')
this.abortController = new AbortController()
try {
// eslint-disable-next-line eslint-plugin-n/no-unsupported-features/node-builtins
const response = await fetch(sseUrl.href, {
headers,
signal: this.abortController.signal,
})
if (!response.ok) {
const isPermanent = PERMANENT_HTTP_CODES.has(response.status)
logForDebugging(
`SSETransport: HTTP ${response.status}${isPermanent ? ' (permanent)' : ''}`,
{ level: 'error' },
)
logForDiagnosticsNoPII('error', 'cli_sse_connect_http_error', {
status: response.status,
})
if (isPermanent) {
this.state = 'closed'
this.onCloseCallback?.(response.status)
return
}
this.handleConnectionError()
return
}
if (!response.body) {
logForDebugging('SSETransport: No response body')
this.handleConnectionError()
return
}
// Successfully connected
const connectDuration = Date.now() - connectStartTime
logForDebugging('SSETransport: Connected')
logForDiagnosticsNoPII('info', 'cli_sse_connect_connected', {
duration_ms: connectDuration,
})
this.state = 'connected'
this.reconnectAttempts = 0
this.reconnectStartTime = null
this.resetLivenessTimer()
// Read the SSE stream
await this.readStream(response.body)
} catch (error) {
if (this.abortController?.signal.aborted) {
// Intentional close
return
}
logForDebugging(
`SSETransport: Connection error: ${errorMessage(error)}`,
{ level: 'error' },
)
logForDiagnosticsNoPII('error', 'cli_sse_connect_error')
this.handleConnectionError()
}
}
/**
* Read and process the SSE stream body.
*/
// eslint-disable-next-line eslint-plugin-n/no-unsupported-features/node-builtins
private async readStream(body: ReadableStream<Uint8Array>): Promise<void> {
const reader = body.getReader()
const decoder = new TextDecoder()
let buffer = ''
try {
while (true) {
const { done, value } = await reader.read()
if (done) break
buffer += decoder.decode(value, STREAM_DECODE_OPTS)
const { frames, remaining } = parseSSEFrames(buffer)
buffer = remaining
for (const frame of frames) {
// Any frame (including keepalive comments) proves the connection is alive
this.resetLivenessTimer()
if (frame.id) {
const seqNum = parseInt(frame.id, 10)
if (!isNaN(seqNum)) {
if (this.seenSequenceNums.has(seqNum)) {
logForDebugging(
`SSETransport: DUPLICATE frame seq=${seqNum} (lastSequenceNum=${this.lastSequenceNum}, seenCount=${this.seenSequenceNums.size})`,
{ level: 'warn' },
)
logForDiagnosticsNoPII('warn', 'cli_sse_duplicate_sequence')
} else {
this.seenSequenceNums.add(seqNum)
// Prevent unbounded growth: once we have many entries, prune
// old sequence numbers that are well below the high-water mark.
// Only sequence numbers near lastSequenceNum matter for dedup.
if (this.seenSequenceNums.size > 1000) {
const threshold = this.lastSequenceNum - 200
for (const s of this.seenSequenceNums) {
if (s < threshold) {
this.seenSequenceNums.delete(s)
}
}
}
}
if (seqNum > this.lastSequenceNum) {
this.lastSequenceNum = seqNum
}
}
}
if (frame.event && frame.data) {
this.handleSSEFrame(frame.event, frame.data)
} else if (frame.data) {
// data: without event: — server is emitting the old envelope format
// or a bug. Log so incidents show as a signal instead of silent drops.
logForDebugging(
'SSETransport: Frame has data: but no event: field — dropped',
{ level: 'warn' },
)
logForDiagnosticsNoPII('warn', 'cli_sse_frame_missing_event_field')
}
}
}
} catch (error) {
if (this.abortController?.signal.aborted) return
logForDebugging(
`SSETransport: Stream read error: ${errorMessage(error)}`,
{ level: 'error' },
)
logForDiagnosticsNoPII('error', 'cli_sse_stream_read_error')
} finally {
reader.releaseLock()
}
// Stream ended — reconnect unless we're closing
if (this.state !== 'closing' && this.state !== 'closed') {
logForDebugging('SSETransport: Stream ended, reconnecting')
this.handleConnectionError()
}
}
/**
* Handle a single SSE frame. The event: field names the variant; data:
* carries the inner proto JSON directly (no envelope).
*
* Worker subscribers only receive client_event frames (see notifier.go) —
* any other event type indicates a server-side change that CC doesn't yet
* understand. Log a diagnostic so we notice in telemetry.
*/
private handleSSEFrame(eventType: string, data: string): void {
if (eventType !== 'client_event') {
logForDebugging(
`SSETransport: Unexpected SSE event type '${eventType}' on worker stream`,
{ level: 'warn' },
)
logForDiagnosticsNoPII('warn', 'cli_sse_unexpected_event_type', {
event_type: eventType,
})
return
}
let ev: StreamClientEvent
try {
ev = jsonParse(data) as StreamClientEvent
} catch (error) {
logForDebugging(
`SSETransport: Failed to parse client_event data: ${errorMessage(error)}`,
{ level: 'error' },
)
return
}
const payload = ev.payload
if (payload && typeof payload === 'object' && 'type' in payload) {
const sessionLabel = this.sessionId ? ` session=${this.sessionId}` : ''
logForDebugging(
`SSETransport: Event seq=${ev.sequence_num} event_id=${ev.event_id} event_type=${ev.event_type} payload_type=${String(payload.type)}${sessionLabel}`,
)
logForDiagnosticsNoPII('info', 'cli_sse_message_received')
// Pass the unwrapped payload as newline-delimited JSON,
// matching the format that StructuredIO/WebSocketTransport consumers expect
this.onData?.(jsonStringify(payload) + '\n')
} else {
logForDebugging(
`SSETransport: Ignoring client_event with no type in payload: event_id=${ev.event_id}`,
)
}
this.onEventCallback?.(ev)
}
/**
* Handle connection errors with exponential backoff and time budget.
*/
private handleConnectionError(): void {
this.clearLivenessTimer()
if (this.state === 'closing' || this.state === 'closed') return
// Abort any in-flight SSE fetch
this.abortController?.abort()
this.abortController = null
const now = Date.now()
if (!this.reconnectStartTime) {
this.reconnectStartTime = now
}
const elapsed = now - this.reconnectStartTime
if (elapsed < RECONNECT_GIVE_UP_MS) {
// Clear any existing timer
if (this.reconnectTimer) {
clearTimeout(this.reconnectTimer)
this.reconnectTimer = null
}
// Refresh headers before reconnecting
if (this.refreshHeaders) {
const freshHeaders = this.refreshHeaders()
Object.assign(this.headers, freshHeaders)
logForDebugging('SSETransport: Refreshed headers for reconnect')
}
this.state = 'reconnecting'
this.reconnectAttempts++
const baseDelay = Math.min(
RECONNECT_BASE_DELAY_MS * Math.pow(2, this.reconnectAttempts - 1),
RECONNECT_MAX_DELAY_MS,
)
// Add ±25% jitter
const delay = Math.max(
0,
baseDelay + baseDelay * 0.25 * (2 * Math.random() - 1),
)
logForDebugging(
`SSETransport: Reconnecting in ${Math.round(delay)}ms (attempt ${this.reconnectAttempts}, ${Math.round(elapsed / 1000)}s elapsed)`,
)
logForDiagnosticsNoPII('error', 'cli_sse_reconnect_attempt', {
reconnectAttempts: this.reconnectAttempts,
})
this.reconnectTimer = setTimeout(() => {
this.reconnectTimer = null
void this.connect()
}, delay)
} else {
logForDebugging(
`SSETransport: Reconnection time budget exhausted after ${Math.round(elapsed / 1000)}s`,
{ level: 'error' },
)
logForDiagnosticsNoPII('error', 'cli_sse_reconnect_exhausted', {
reconnectAttempts: this.reconnectAttempts,
elapsedMs: elapsed,
})
this.state = 'closed'
this.onCloseCallback?.()
}
}
/**
* Bound timeout callback. Hoisted from an inline closure so that
* resetLivenessTimer (called per-frame) does not allocate a new closure
* on every SSE frame.
*/
private readonly onLivenessTimeout = (): void => {
this.livenessTimer = null
logForDebugging('SSETransport: Liveness timeout, reconnecting', {
level: 'error',
})
logForDiagnosticsNoPII('error', 'cli_sse_liveness_timeout')
this.abortController?.abort()
this.handleConnectionError()
}
/**
* Reset the liveness timer. If no SSE frame arrives within the timeout,
* treat the connection as dead and reconnect.
*/
private resetLivenessTimer(): void {
this.clearLivenessTimer()
this.livenessTimer = setTimeout(this.onLivenessTimeout, LIVENESS_TIMEOUT_MS)
}
private clearLivenessTimer(): void {
if (this.livenessTimer) {
clearTimeout(this.livenessTimer)
this.livenessTimer = null
}
}
// -----------------------------------------------------------------------
// Write (HTTP POST) — same pattern as HybridTransport
// -----------------------------------------------------------------------
async write(message: StdoutMessage): Promise<void> {
const authHeaders = this.getAuthHeaders()
if (Object.keys(authHeaders).length === 0) {
logForDebugging('SSETransport: No session token available for POST')
logForDiagnosticsNoPII('warn', 'cli_sse_post_no_token')
return
}
const headers: Record<string, string> = {
...authHeaders,
'Content-Type': 'application/json',
'anthropic-version': '2023-06-01',
'User-Agent': getClaudeCodeUserAgent(),
}
logForDebugging(
`SSETransport: POST body keys=${Object.keys(message as Record<string, unknown>).join(',')}`,
)
for (let attempt = 1; attempt <= POST_MAX_RETRIES; attempt++) {
try {
const response = await axios.post(this.postUrl, message, {
headers,
validateStatus: alwaysValidStatus,
})
if (response.status === 200 || response.status === 201) {
logForDebugging(`SSETransport: POST success type=${message.type}`)
return
}
logForDebugging(
`SSETransport: POST ${response.status} body=${jsonStringify(response.data).slice(0, 200)}`,
)
// 4xx errors (except 429) are permanent - don't retry
if (
response.status >= 400 &&
response.status < 500 &&
response.status !== 429
) {
logForDebugging(
`SSETransport: POST returned ${response.status} (client error), not retrying`,
)
logForDiagnosticsNoPII('warn', 'cli_sse_post_client_error', {
status: response.status,
})
return
}
// 429 or 5xx - retry
logForDebugging(
`SSETransport: POST returned ${response.status}, attempt ${attempt}/${POST_MAX_RETRIES}`,
)
logForDiagnosticsNoPII('warn', 'cli_sse_post_retryable_error', {
status: response.status,
attempt,
})
} catch (error) {
const axiosError = error as AxiosError
logForDebugging(
`SSETransport: POST error: ${axiosError.message}, attempt ${attempt}/${POST_MAX_RETRIES}`,
)
logForDiagnosticsNoPII('warn', 'cli_sse_post_network_error', {
attempt,
})
}
if (attempt === POST_MAX_RETRIES) {
logForDebugging(
`SSETransport: POST failed after ${POST_MAX_RETRIES} attempts, continuing`,
)
logForDiagnosticsNoPII('warn', 'cli_sse_post_retries_exhausted')
return
}
const delayMs = Math.min(
POST_BASE_DELAY_MS * Math.pow(2, attempt - 1),
POST_MAX_DELAY_MS,
)
await sleep(delayMs)
}
}
// -----------------------------------------------------------------------
// Transport interface
// -----------------------------------------------------------------------
isConnectedStatus(): boolean {
return this.state === 'connected'
}
isClosedStatus(): boolean {
return this.state === 'closed'
}
setOnData(callback: (data: string) => void): void {
this.onData = callback
}
setOnClose(callback: (closeCode?: number) => void): void {
this.onCloseCallback = callback
}
setOnEvent(callback: (event: StreamClientEvent) => void): void {
this.onEventCallback = callback
}
close(): void {
if (this.reconnectTimer) {
clearTimeout(this.reconnectTimer)
this.reconnectTimer = null
}
this.clearLivenessTimer()
this.state = 'closing'
this.abortController?.abort()
this.abortController = null
}
}
// ---------------------------------------------------------------------------
// URL Conversion
// ---------------------------------------------------------------------------
/**
* Convert an SSE URL to the HTTP POST endpoint URL.
* The SSE stream URL and POST URL share the same base; the POST endpoint
* is at `/events` (without `/stream`).
*
* From: https://api.example.com/v2/session_ingress/session/<session_id>/events/stream
* To: https://api.example.com/v2/session_ingress/session/<session_id>/events
*/
function convertSSEUrlToPostUrl(sseUrl: URL): string {
let pathname = sseUrl.pathname
// Remove /stream suffix to get the POST events endpoint
if (pathname.endsWith('/stream')) {
pathname = pathname.slice(0, -'/stream'.length)
}
return `${sseUrl.protocol}//${sseUrl.host}${pathname}`
}

275
src/cli/transports/SerialBatchEventUploader.ts Normal file
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import { jsonStringify } from '../../utils/slowOperations.js'
/**
* Serial ordered event uploader with batching, retry, and backpressure.
*
* - enqueue() adds events to a pending buffer
* - At most 1 POST in-flight at a time
* - Drains up to maxBatchSize items per POST
* - New events accumulate while in-flight
* - On failure: exponential backoff (clamped), retries indefinitely
* until success or close() — unless maxConsecutiveFailures is set,
* in which case the failing batch is dropped and drain advances
* - flush() blocks until pending is empty and kicks drain if needed
* - Backpressure: enqueue() blocks when maxQueueSize is reached
*/
/**
* Throw from config.send() to make the uploader wait a server-supplied
* duration before retrying (e.g. 429 with Retry-After). When retryAfterMs
* is set, it overrides exponential backoff for that attempt — clamped to
* [baseDelayMs, maxDelayMs] and jittered so a misbehaving server can
* neither hot-loop nor stall the client, and many sessions sharing a rate
* limit don't all pounce at the same instant. Without retryAfterMs, behaves
* like any other thrown error (exponential backoff).
*/
export class RetryableError extends Error {
constructor(
message: string,
readonly retryAfterMs?: number,
) {
super(message)
}
}
type SerialBatchEventUploaderConfig<T> = {
/** Max items per POST (1 = no batching) */
maxBatchSize: number
/**
* Max serialized bytes per POST. First item always goes in regardless of
* size; subsequent items only if cumulative JSON bytes stay under this.
* Undefined = no byte limit (count-only batching).
*/
maxBatchBytes?: number
/** Max pending items before enqueue() blocks */
maxQueueSize: number
/** The actual HTTP call — caller controls payload format */
send: (batch: T[]) => Promise<void>
/** Base delay for exponential backoff (ms) */
baseDelayMs: number
/** Max delay cap (ms) */
maxDelayMs: number
/** Random jitter range added to retry delay (ms) */
jitterMs: number
/**
* After this many consecutive send() failures, drop the failing batch
* and move on to the next pending item with a fresh failure budget.
* Undefined = retry indefinitely (default).
*/
maxConsecutiveFailures?: number
/** Called when a batch is dropped for hitting maxConsecutiveFailures. */
onBatchDropped?: (batchSize: number, failures: number) => void
}
export class SerialBatchEventUploader<T> {
private pending: T[] = []
private pendingAtClose = 0
private draining = false
private closed = false
private backpressureResolvers: Array<() => void> = []
private sleepResolve: (() => void) | null = null
private flushResolvers: Array<() => void> = []
private droppedBatches = 0
private readonly config: SerialBatchEventUploaderConfig<T>
constructor(config: SerialBatchEventUploaderConfig<T>) {
this.config = config
}
/**
* Monotonic count of batches dropped via maxConsecutiveFailures. Callers
* can snapshot before flush() and compare after to detect silent drops
* (flush() resolves normally even when batches were dropped).
*/
get droppedBatchCount(): number {
return this.droppedBatches
}
/**
* Pending queue depth. After close(), returns the count at close time —
* close() clears the queue but shutdown diagnostics may read this after.
*/
get pendingCount(): number {
return this.closed ? this.pendingAtClose : this.pending.length
}
/**
* Add events to the pending buffer. Returns immediately if space is
* available. Blocks (awaits) if the buffer is full — caller pauses
* until drain frees space.
*/
async enqueue(events: T | T[]): Promise<void> {
if (this.closed) return
const items = Array.isArray(events) ? events : [events]
if (items.length === 0) return
// Backpressure: wait until there's space
while (
this.pending.length + items.length > this.config.maxQueueSize &&
!this.closed
) {
await new Promise<void>(resolve => {
this.backpressureResolvers.push(resolve)
})
}
if (this.closed) return
this.pending.push(...items)
void this.drain()
}
/**
* Block until all pending events have been sent.
* Used at turn boundaries and graceful shutdown.
*/
flush(): Promise<void> {
if (this.pending.length === 0 && !this.draining) {
return Promise.resolve()
}
void this.drain()
return new Promise<void>(resolve => {
this.flushResolvers.push(resolve)
})
}
/**
* Drop pending events and stop processing.
* Resolves any blocked enqueue() and flush() callers.
*/
close(): void {
if (this.closed) return
this.closed = true
this.pendingAtClose = this.pending.length
this.pending = []
this.sleepResolve?.()
this.sleepResolve = null
for (const resolve of this.backpressureResolvers) resolve()
this.backpressureResolvers = []
for (const resolve of this.flushResolvers) resolve()
this.flushResolvers = []
}
/**
* Drain loop. At most one instance runs at a time (guarded by this.draining).
* Sends batches serially. On failure, backs off and retries indefinitely.
*/
private async drain(): Promise<void> {
if (this.draining || this.closed) return
this.draining = true
let failures = 0
try {
while (this.pending.length > 0 && !this.closed) {
const batch = this.takeBatch()
if (batch.length === 0) continue
try {
await this.config.send(batch)
failures = 0
} catch (err) {
failures++
if (
this.config.maxConsecutiveFailures !== undefined &&
failures >= this.config.maxConsecutiveFailures
) {
this.droppedBatches++
this.config.onBatchDropped?.(batch.length, failures)
failures = 0
this.releaseBackpressure()
continue
}
// Re-queue the failed batch at the front. Use concat (single
// allocation) instead of unshift(...batch) which shifts every
// pending item batch.length times. Only hit on failure path.
this.pending = batch.concat(this.pending)
const retryAfterMs =
err instanceof RetryableError ? err.retryAfterMs : undefined
await this.sleep(this.retryDelay(failures, retryAfterMs))
continue
}
// Release backpressure waiters if space opened up
this.releaseBackpressure()
}
} finally {
this.draining = false
// Notify flush waiters if queue is empty
if (this.pending.length === 0) {
for (const resolve of this.flushResolvers) resolve()
this.flushResolvers = []
}
}
}
/**
* Pull the next batch from pending. Respects both maxBatchSize and
* maxBatchBytes. The first item is always taken; subsequent items only
* if adding them keeps the cumulative JSON size under maxBatchBytes.
*
* Un-serializable items (BigInt, circular refs, throwing toJSON) are
* dropped in place — they can never be sent and leaving them at
* pending[0] would poison the queue and hang flush() forever.
*/
private takeBatch(): T[] {
const { maxBatchSize, maxBatchBytes } = this.config
if (maxBatchBytes === undefined) {
return this.pending.splice(0, maxBatchSize)
}
let bytes = 0
let count = 0
while (count < this.pending.length && count < maxBatchSize) {
let itemBytes: number
try {
itemBytes = Buffer.byteLength(jsonStringify(this.pending[count]))
} catch {
this.pending.splice(count, 1)
continue
}
if (count > 0 && bytes + itemBytes > maxBatchBytes) break
bytes += itemBytes
count++
}
return this.pending.splice(0, count)
}
private retryDelay(failures: number, retryAfterMs?: number): number {
const jitter = Math.random() * this.config.jitterMs
if (retryAfterMs !== undefined) {
// Jitter on top of the server's hint prevents thundering herd when
// many sessions share a rate limit and all receive the same
// Retry-After. Clamp first, then spread — same shape as the
// exponential path (effective ceiling is maxDelayMs + jitterMs).
const clamped = Math.max(
this.config.baseDelayMs,
Math.min(retryAfterMs, this.config.maxDelayMs),
)
return clamped + jitter
}
const exponential = Math.min(
this.config.baseDelayMs * 2 ** (failures - 1),
this.config.maxDelayMs,
)
return exponential + jitter
}
private releaseBackpressure(): void {
const resolvers = this.backpressureResolvers
this.backpressureResolvers = []
for (const resolve of resolvers) resolve()
}
private sleep(ms: number): Promise<void> {
return new Promise(resolve => {
this.sleepResolve = resolve
setTimeout(
(self, resolve) => {
self.sleepResolve = null
resolve()
},
ms,
this,
resolve,
)
})
}
}

7
src/cli/transports/Transport.ts Normal file
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export interface Transport {
connect?(): Promise<void>
close?(): void | Promise<void>
send?(data: string): Promise<void>
onData?(handler: (data: string) => void): void
onClose?(handler: (closeCode?: number) => void): void
}

800
src/cli/transports/WebSocketTransport.ts Normal file
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import type { StdoutMessage } from 'src/entrypoints/sdk/controlTypes.js'
import type WsWebSocket from 'ws'
import { logEvent } from '../../services/analytics/index.js'
import { CircularBuffer } from '../../utils/CircularBuffer.js'
import { logForDebugging } from '../../utils/debug.js'
import { logForDiagnosticsNoPII } from '../../utils/diagLogs.js'
import { isEnvTruthy } from '../../utils/envUtils.js'
import { getWebSocketTLSOptions } from '../../utils/mtls.js'
import {
getWebSocketProxyAgent,
getWebSocketProxyUrl,
} from '../../utils/proxy.js'
import {
registerSessionActivityCallback,
unregisterSessionActivityCallback,
} from '../../utils/sessionActivity.js'
import { jsonStringify } from '../../utils/slowOperations.js'
import type { Transport } from './Transport.js'
const KEEP_ALIVE_FRAME = '{"type":"keep_alive"}\n'
const DEFAULT_MAX_BUFFER_SIZE = 1000
const DEFAULT_BASE_RECONNECT_DELAY = 1000
const DEFAULT_MAX_RECONNECT_DELAY = 30000
/** Time budget for reconnection attempts before giving up (10 minutes). */
const DEFAULT_RECONNECT_GIVE_UP_MS = 600_000
const DEFAULT_PING_INTERVAL = 10000
const DEFAULT_KEEPALIVE_INTERVAL = 300_000 // 5 minutes
/**
* Threshold for detecting system sleep/wake. If the gap between consecutive
* reconnection attempts exceeds this, the machine likely slept. We reset
* the reconnection budget and retry — the server will reject with permanent
* close codes (4001/1002) if the session was reaped during sleep.
*/
const SLEEP_DETECTION_THRESHOLD_MS = DEFAULT_MAX_RECONNECT_DELAY * 2 // 60s
/**
* WebSocket close codes that indicate a permanent server-side rejection.
* The transport transitions to 'closed' immediately without retrying.
*/
const PERMANENT_CLOSE_CODES = new Set([
1002, // protocol error — server rejected handshake (e.g. session reaped)
4001, // session expired / not found
4003, // unauthorized
])
export type WebSocketTransportOptions = {
/** When false, the transport does not attempt automatic reconnection on
* disconnect. Use this when the caller has its own recovery mechanism
* (e.g. the REPL bridge poll loop). Defaults to true. */
autoReconnect?: boolean
/** Gates the tengu_ws_transport_* telemetry events. Set true at the
* REPL-bridge construction site so only Remote Control sessions (the
* Cloudflare-idle-timeout population) emit; print-mode workers stay
* silent. Defaults to false. */
isBridge?: boolean
}
type WebSocketTransportState =
| 'idle'
| 'connected'
| 'reconnecting'
| 'closing'
| 'closed'
// Common interface between globalThis.WebSocket and ws.WebSocket
type WebSocketLike = {
close(): void
send(data: string): void
ping?(): void // Bun & ws both support this
}
export class WebSocketTransport implements Transport {
private ws: WebSocketLike | null = null
private lastSentId: string | null = null
protected url: URL
protected state: WebSocketTransportState = 'idle'
protected onData?: (data: string) => void
private onCloseCallback?: (closeCode?: number) => void
private onConnectCallback?: () => void
private headers: Record<string, string>
private sessionId?: string
private autoReconnect: boolean
private isBridge: boolean
// Reconnection state
private reconnectAttempts = 0
private reconnectStartTime: number | null = null
private reconnectTimer: NodeJS.Timeout | null = null
private lastReconnectAttemptTime: number | null = null
// Wall-clock of last WS data-frame activity (inbound message or outbound
// ws.send). Used to compute idle time at close — the signal for diagnosing
// proxy idle-timeout RSTs (e.g. Cloudflare 5-min). Excludes ping/pong
// control frames (proxies don't count those).
private lastActivityTime = 0
// Ping interval for connection health checks
private pingInterval: NodeJS.Timeout | null = null
private pongReceived = true
// Periodic keep_alive data frames to reset proxy idle timers
private keepAliveInterval: NodeJS.Timeout | null = null
// Message buffering for replay on reconnection
private messageBuffer: CircularBuffer<StdoutMessage>
// Track which runtime's WS we're using so we can detach listeners
// with the matching API (removeEventListener vs. off).
private isBunWs = false
// Captured at connect() time for handleOpenEvent timing. Stored as an
// instance field so the onOpen handler can be a stable class-property
// arrow function (removable in doDisconnect) instead of a closure over
// a local variable.
private connectStartTime = 0
private refreshHeaders?: () => Record<string, string>
constructor(
url: URL,
headers: Record<string, string> = {},
sessionId?: string,
refreshHeaders?: () => Record<string, string>,
options?: WebSocketTransportOptions,
) {
this.url = url
this.headers = headers
this.sessionId = sessionId
this.refreshHeaders = refreshHeaders
this.autoReconnect = options?.autoReconnect ?? true
this.isBridge = options?.isBridge ?? false
this.messageBuffer = new CircularBuffer(DEFAULT_MAX_BUFFER_SIZE)
}
public async connect(): Promise<void> {
if (this.state !== 'idle' && this.state !== 'reconnecting') {
logForDebugging(
`WebSocketTransport: Cannot connect, current state is ${this.state}`,
{ level: 'error' },
)
logForDiagnosticsNoPII('error', 'cli_websocket_connect_failed')
return
}
this.state = 'reconnecting'
this.connectStartTime = Date.now()
logForDebugging(`WebSocketTransport: Opening ${this.url.href}`)
logForDiagnosticsNoPII('info', 'cli_websocket_connect_opening')
// Start with provided headers and add runtime headers
const headers = { ...this.headers }
if (this.lastSentId) {
headers['X-Last-Request-Id'] = this.lastSentId
logForDebugging(
`WebSocketTransport: Adding X-Last-Request-Id header: ${this.lastSentId}`,
)
}
if (typeof Bun !== 'undefined') {
// Bun's WebSocket supports headers/proxy options but the DOM typings don't
// eslint-disable-next-line eslint-plugin-n/no-unsupported-features/node-builtins
const ws = new globalThis.WebSocket(this.url.href, {
headers,
proxy: getWebSocketProxyUrl(this.url.href),
tls: getWebSocketTLSOptions() || undefined,
} as unknown as string[])
this.ws = ws
this.isBunWs = true
ws.addEventListener('open', this.onBunOpen)
ws.addEventListener('message', this.onBunMessage)
ws.addEventListener('error', this.onBunError)
// eslint-disable-next-line eslint-plugin-n/no-unsupported-features/node-builtins
ws.addEventListener('close', this.onBunClose)
// 'pong' is Bun-specific — not in DOM typings.
ws.addEventListener('pong', this.onPong)
} else {
const { default: WS } = await import('ws')
const ws = new WS(this.url.href, {
headers,
agent: getWebSocketProxyAgent(this.url.href),
...getWebSocketTLSOptions(),
})
this.ws = ws
this.isBunWs = false
ws.on('open', this.onNodeOpen)
ws.on('message', this.onNodeMessage)
ws.on('error', this.onNodeError)
ws.on('close', this.onNodeClose)
ws.on('pong', this.onPong)
}
}
// --- Bun (native WebSocket) event handlers ---
// Stored as class-property arrow functions so they can be removed in
// doDisconnect(). Without removal, each reconnect orphans the old WS
// object + its 5 closures until GC, which accumulates under network
// instability. Mirrors the pattern in src/utils/mcpWebSocketTransport.ts.
private onBunOpen = () => {
this.handleOpenEvent()
// Bun's WebSocket doesn't expose upgrade response headers,
// so replay all buffered messages. The server deduplicates by UUID.
if (this.lastSentId) {
this.replayBufferedMessages('')
}
}
private onBunMessage = (event: MessageEvent) => {
const message =
typeof event.data === 'string' ? event.data : String(event.data)
this.lastActivityTime = Date.now()
logForDiagnosticsNoPII('info', 'cli_websocket_message_received', {
length: message.length,
})
if (this.onData) {
this.onData(message)
}
}
private onBunError = () => {
logForDebugging('WebSocketTransport: Error', {
level: 'error',
})
logForDiagnosticsNoPII('error', 'cli_websocket_connect_error')
// close event fires after error — let it call handleConnectionError
}
// eslint-disable-next-line eslint-plugin-n/no-unsupported-features/node-builtins
private onBunClose = (event: CloseEvent) => {
const isClean = event.code === 1000 || event.code === 1001
logForDebugging(
`WebSocketTransport: Closed: ${event.code}`,
isClean ? undefined : { level: 'error' },
)
logForDiagnosticsNoPII('error', 'cli_websocket_connect_closed')
this.handleConnectionError(event.code)
}
// --- Node (ws package) event handlers ---
private onNodeOpen = () => {
// Capture ws before handleOpenEvent() invokes onConnectCallback — if the
// callback synchronously closes the transport, this.ws becomes null.
// The old inline-closure code had this safety implicitly via closure capture.
const ws = this.ws
this.handleOpenEvent()
if (!ws) return
// Check for last-id in upgrade response headers (ws package only)
const nws = ws as unknown as WsWebSocket & {
upgradeReq?: { headers?: Record<string, string> }
}
const upgradeResponse = nws.upgradeReq
if (upgradeResponse?.headers?.['x-last-request-id']) {
const serverLastId = upgradeResponse.headers['x-last-request-id']
this.replayBufferedMessages(serverLastId)
}
}
private onNodeMessage = (data: Buffer) => {
const message = data.toString()
this.lastActivityTime = Date.now()
logForDiagnosticsNoPII('info', 'cli_websocket_message_received', {
length: message.length,
})
if (this.onData) {
this.onData(message)
}
}
private onNodeError = (err: Error) => {
logForDebugging(`WebSocketTransport: Error: ${err.message}`, {
level: 'error',
})
logForDiagnosticsNoPII('error', 'cli_websocket_connect_error')
// close event fires after error — let it call handleConnectionError
}
private onNodeClose = (code: number, _reason: Buffer) => {
const isClean = code === 1000 || code === 1001
logForDebugging(
`WebSocketTransport: Closed: ${code}`,
isClean ? undefined : { level: 'error' },
)
logForDiagnosticsNoPII('error', 'cli_websocket_connect_closed')
this.handleConnectionError(code)
}
// --- Shared handlers ---
private onPong = () => {
this.pongReceived = true
}
private handleOpenEvent(): void {
const connectDuration = Date.now() - this.connectStartTime
logForDebugging('WebSocketTransport: Connected')
logForDiagnosticsNoPII('info', 'cli_websocket_connect_connected', {
duration_ms: connectDuration,
})
// Reconnect success — capture attempt count + downtime before resetting.
// reconnectStartTime is null on first connect, non-null on reopen.
if (this.isBridge && this.reconnectStartTime !== null) {
logEvent('tengu_ws_transport_reconnected', {
attempts: this.reconnectAttempts,
downtimeMs: Date.now() - this.reconnectStartTime,
})
}
this.reconnectAttempts = 0
this.reconnectStartTime = null
this.lastReconnectAttemptTime = null
this.lastActivityTime = Date.now()
this.state = 'connected'
this.onConnectCallback?.()
// Start periodic pings to detect dead connections
this.startPingInterval()
// Start periodic keep_alive data frames to reset proxy idle timers
this.startKeepaliveInterval()
// Register callback for session activity signals
registerSessionActivityCallback(() => {
void this.write({ type: 'keep_alive' })
})
}
protected sendLine(line: string): boolean {
if (!this.ws || this.state !== 'connected') {
logForDebugging('WebSocketTransport: Not connected')
logForDiagnosticsNoPII('info', 'cli_websocket_send_not_connected')
return false
}
try {
this.ws.send(line)
this.lastActivityTime = Date.now()
return true
} catch (error) {
logForDebugging(`WebSocketTransport: Failed to send: ${error}`, {
level: 'error',
})
logForDiagnosticsNoPII('error', 'cli_websocket_send_error')
// Don't null this.ws here — let doDisconnect() (via handleConnectionError)
// handle cleanup so listeners are removed before the WS is released.
this.handleConnectionError()
return false
}
}
/**
* Remove all listeners attached in connect() for the given WebSocket.
* Without this, each reconnect orphans the old WS object + its closures
* until GC — these accumulate under network instability. Mirrors the
* pattern in src/utils/mcpWebSocketTransport.ts.
*/
private removeWsListeners(ws: WebSocketLike): void {
if (this.isBunWs) {
const nws = ws as unknown as globalThis.WebSocket
nws.removeEventListener('open', this.onBunOpen)
nws.removeEventListener('message', this.onBunMessage)
nws.removeEventListener('error', this.onBunError)
// eslint-disable-next-line eslint-plugin-n/no-unsupported-features/node-builtins
nws.removeEventListener('close', this.onBunClose)
// 'pong' is Bun-specific — not in DOM typings
nws.removeEventListener('pong' as 'message', this.onPong)
} else {
const nws = ws as unknown as WsWebSocket
nws.off('open', this.onNodeOpen)
nws.off('message', this.onNodeMessage)
nws.off('error', this.onNodeError)
nws.off('close', this.onNodeClose)
nws.off('pong', this.onPong)
}
}
protected doDisconnect(): void {
// Stop pinging and keepalive when disconnecting
this.stopPingInterval()
this.stopKeepaliveInterval()
// Unregister session activity callback
unregisterSessionActivityCallback()
if (this.ws) {
// Remove listeners BEFORE close() so the old WS + closures can be
// GC'd promptly instead of lingering until the next mark-and-sweep.
this.removeWsListeners(this.ws)
this.ws.close()
this.ws = null
}
}
private handleConnectionError(closeCode?: number): void {
logForDebugging(
`WebSocketTransport: Disconnected from ${this.url.href}` +
(closeCode != null ? ` (code ${closeCode})` : ''),
)
logForDiagnosticsNoPII('info', 'cli_websocket_disconnected')
if (this.isBridge) {
// Fire on every close — including intermediate ones during a reconnect
// storm (those never surface to the onCloseCallback consumer). For the
// Cloudflare-5min-idle hypothesis: cluster msSinceLastActivity; if the
// peak sits at ~300s with closeCode 1006, that's the proxy RST.
logEvent('tengu_ws_transport_closed', {
closeCode,
msSinceLastActivity:
this.lastActivityTime > 0 ? Date.now() - this.lastActivityTime : -1,
// 'connected' = healthy drop (the Cloudflare case); 'reconnecting' =
// connect-rejection mid-storm. State isn't mutated until the branches
// below, so this reads the pre-close value.
wasConnected: this.state === 'connected',
reconnectAttempts: this.reconnectAttempts,
})
}
this.doDisconnect()
if (this.state === 'closing' || this.state === 'closed') return
// Permanent codes: don't retry — server has definitively ended the session.
// Exception: 4003 (unauthorized) can be retried when refreshHeaders is
// available and returns a new token (e.g. after the parent process mints
// a fresh session ingress token during reconnection).
let headersRefreshed = false
if (closeCode === 4003 && this.refreshHeaders) {
const freshHeaders = this.refreshHeaders()
if (freshHeaders.Authorization !== this.headers.Authorization) {
Object.assign(this.headers, freshHeaders)
headersRefreshed = true
logForDebugging(
'WebSocketTransport: 4003 received but headers refreshed, scheduling reconnect',
)
logForDiagnosticsNoPII('info', 'cli_websocket_4003_token_refreshed')
}
}
if (
closeCode != null &&
PERMANENT_CLOSE_CODES.has(closeCode) &&
!headersRefreshed
) {
logForDebugging(
`WebSocketTransport: Permanent close code ${closeCode}, not reconnecting`,
{ level: 'error' },
)
logForDiagnosticsNoPII('error', 'cli_websocket_permanent_close', {
closeCode,
})
this.state = 'closed'
this.onCloseCallback?.(closeCode)
return
}
// When autoReconnect is disabled, go straight to closed state.
// The caller (e.g. REPL bridge poll loop) handles recovery.
if (!this.autoReconnect) {
this.state = 'closed'
this.onCloseCallback?.(closeCode)
return
}
// Schedule reconnection with exponential backoff and time budget
const now = Date.now()
if (!this.reconnectStartTime) {
this.reconnectStartTime = now
}
// Detect system sleep/wake: if the gap since our last reconnection
// attempt greatly exceeds the max delay, the machine likely slept
// (e.g. laptop lid closed). Reset the budget and retry from scratch —
// the server will reject with permanent close codes (4001/1002) if
// the session was reaped while we were asleep.
if (
this.lastReconnectAttemptTime !== null &&
now - this.lastReconnectAttemptTime > SLEEP_DETECTION_THRESHOLD_MS
) {
logForDebugging(
`WebSocketTransport: Detected system sleep (${Math.round((now - this.lastReconnectAttemptTime) / 1000)}s gap), resetting reconnection budget`,
)
logForDiagnosticsNoPII('info', 'cli_websocket_sleep_detected', {
gapMs: now - this.lastReconnectAttemptTime,
})
this.reconnectStartTime = now
this.reconnectAttempts = 0
}
this.lastReconnectAttemptTime = now
const elapsed = now - this.reconnectStartTime
if (elapsed < DEFAULT_RECONNECT_GIVE_UP_MS) {
// Clear any existing reconnection timer to avoid duplicates
if (this.reconnectTimer) {
clearTimeout(this.reconnectTimer)
this.reconnectTimer = null
}
// Refresh headers before reconnecting (e.g. to pick up a new session token).
// Skip if already refreshed by the 4003 path above.
if (!headersRefreshed && this.refreshHeaders) {
const freshHeaders = this.refreshHeaders()
Object.assign(this.headers, freshHeaders)
logForDebugging('WebSocketTransport: Refreshed headers for reconnect')
}
this.state = 'reconnecting'
this.reconnectAttempts++
const baseDelay = Math.min(
DEFAULT_BASE_RECONNECT_DELAY * Math.pow(2, this.reconnectAttempts - 1),
DEFAULT_MAX_RECONNECT_DELAY,
)
// Add ±25% jitter to avoid thundering herd
const delay = Math.max(
0,
baseDelay + baseDelay * 0.25 * (2 * Math.random() - 1),
)
logForDebugging(
`WebSocketTransport: Reconnecting in ${Math.round(delay)}ms (attempt ${this.reconnectAttempts}, ${Math.round(elapsed / 1000)}s elapsed)`,
)
logForDiagnosticsNoPII('error', 'cli_websocket_reconnect_attempt', {
reconnectAttempts: this.reconnectAttempts,
})
if (this.isBridge) {
logEvent('tengu_ws_transport_reconnecting', {
attempt: this.reconnectAttempts,
elapsedMs: elapsed,
delayMs: Math.round(delay),
})
}
this.reconnectTimer = setTimeout(() => {
this.reconnectTimer = null
void this.connect()
}, delay)
} else {
logForDebugging(
`WebSocketTransport: Reconnection time budget exhausted after ${Math.round(elapsed / 1000)}s for ${this.url.href}`,
{ level: 'error' },
)
logForDiagnosticsNoPII('error', 'cli_websocket_reconnect_exhausted', {
reconnectAttempts: this.reconnectAttempts,
elapsedMs: elapsed,
})
this.state = 'closed'
// Notify close callback
if (this.onCloseCallback) {
this.onCloseCallback(closeCode)
}
}
}
close(): void {
// Clear any pending reconnection timer
if (this.reconnectTimer) {
clearTimeout(this.reconnectTimer)
this.reconnectTimer = null
}
// Clear ping and keepalive intervals
this.stopPingInterval()
this.stopKeepaliveInterval()
// Unregister session activity callback
unregisterSessionActivityCallback()
this.state = 'closing'
this.doDisconnect()
}
private replayBufferedMessages(lastId: string): void {
const messages = this.messageBuffer.toArray()
if (messages.length === 0) return
// Find where to start replay based on server's last received message
let startIndex = 0
if (lastId) {
const lastConfirmedIndex = messages.findIndex(
message => 'uuid' in message && message.uuid === lastId,
)
if (lastConfirmedIndex >= 0) {
// Server confirmed messages up to lastConfirmedIndex — evict them
startIndex = lastConfirmedIndex + 1
// Rebuild the buffer with only unconfirmed messages
const remaining = messages.slice(startIndex)
this.messageBuffer.clear()
this.messageBuffer.addAll(remaining)
if (remaining.length === 0) {
this.lastSentId = null
}
logForDebugging(
`WebSocketTransport: Evicted ${startIndex} confirmed messages, ${remaining.length} remaining`,
)
logForDiagnosticsNoPII(
'info',
'cli_websocket_evicted_confirmed_messages',
{
evicted: startIndex,
remaining: remaining.length,
},
)
}
}
const messagesToReplay = messages.slice(startIndex)
if (messagesToReplay.length === 0) {
logForDebugging('WebSocketTransport: No new messages to replay')
logForDiagnosticsNoPII('info', 'cli_websocket_no_messages_to_replay')
return
}
logForDebugging(
`WebSocketTransport: Replaying ${messagesToReplay.length} buffered messages`,
)
logForDiagnosticsNoPII('info', 'cli_websocket_messages_to_replay', {
count: messagesToReplay.length,
})
for (const message of messagesToReplay) {
const line = jsonStringify(message) + '\n'
const success = this.sendLine(line)
if (!success) {
this.handleConnectionError()
break
}
}
// Do NOT clear the buffer after replay — messages remain buffered until
// the server confirms receipt on the next reconnection. This prevents
// message loss if the connection drops after replay but before the server
// processes the messages.
}
isConnectedStatus(): boolean {
return this.state === 'connected'
}
isClosedStatus(): boolean {
return this.state === 'closed'
}
setOnData(callback: (data: string) => void): void {
this.onData = callback
}
setOnConnect(callback: () => void): void {
this.onConnectCallback = callback
}
setOnClose(callback: (closeCode?: number) => void): void {
this.onCloseCallback = callback
}
getStateLabel(): string {
return this.state
}
async write(message: StdoutMessage): Promise<void> {
if ('uuid' in message && typeof message.uuid === 'string') {
this.messageBuffer.add(message)
this.lastSentId = message.uuid
}
const line = jsonStringify(message) + '\n'
if (this.state !== 'connected') {
// Message buffered for replay when connected (if it has a UUID)
return
}
const sessionLabel = this.sessionId ? ` session=${this.sessionId}` : ''
const detailLabel = this.getControlMessageDetailLabel(message)
logForDebugging(
`WebSocketTransport: Sending message type=${message.type}${sessionLabel}${detailLabel}`,
)
this.sendLine(line)
}
private getControlMessageDetailLabel(message: StdoutMessage): string {
if (message.type === 'control_request') {
const { request_id, request } = message
const toolName =
request.subtype === 'can_use_tool' ? request.tool_name : ''
return ` subtype=${request.subtype} request_id=${request_id}${toolName ? ` tool=${toolName}` : ''}`
}
if (message.type === 'control_response') {
const { subtype, request_id } = message.response
return ` subtype=${subtype} request_id=${request_id}`
}
return ''
}
private startPingInterval(): void {
// Clear any existing interval
this.stopPingInterval()
this.pongReceived = true
let lastTickTime = Date.now()
// Send ping periodically to detect dead connections.
// If the previous ping got no pong, treat the connection as dead.
this.pingInterval = setInterval(() => {
if (this.state === 'connected' && this.ws) {
const now = Date.now()
const gap = now - lastTickTime
lastTickTime = now
// Process-suspension detector. If the wall-clock gap between ticks
// greatly exceeds the 10s interval, the process was suspended
// (laptop lid, SIGSTOP, VM pause). setInterval does not queue
// missed ticks — it coalesces — so on wake this callback fires
// once with a huge gap. The socket is almost certainly dead:
// NAT mappings drop in 30s–5min, and the server has been
// retransmitting into the void. Don't wait for a ping/pong
// round-trip to confirm (ws.ping() on a dead socket returns
// immediately with no error — bytes go into the kernel send
// buffer). Assume dead and reconnect now. A spurious reconnect
// after a short sleep is cheap — replayBufferedMessages() handles
// it and the server dedups by UUID.
if (gap > SLEEP_DETECTION_THRESHOLD_MS) {
logForDebugging(
`WebSocketTransport: ${Math.round(gap / 1000)}s tick gap detected — process was suspended, forcing reconnect`,
)
logForDiagnosticsNoPII(
'info',
'cli_websocket_sleep_detected_on_ping',
{ gapMs: gap },
)
this.handleConnectionError()
return
}
if (!this.pongReceived) {
logForDebugging(
'WebSocketTransport: No pong received, connection appears dead',
{ level: 'error' },
)
logForDiagnosticsNoPII('error', 'cli_websocket_pong_timeout')
this.handleConnectionError()
return
}
this.pongReceived = false
try {
this.ws.ping?.()
} catch (error) {
logForDebugging(`WebSocketTransport: Ping failed: ${error}`, {
level: 'error',
})
logForDiagnosticsNoPII('error', 'cli_websocket_ping_failed')
}
}
}, DEFAULT_PING_INTERVAL)
}
private stopPingInterval(): void {
if (this.pingInterval) {
clearInterval(this.pingInterval)
this.pingInterval = null
}
}
private startKeepaliveInterval(): void {
this.stopKeepaliveInterval()
// In CCR sessions, session activity heartbeats handle keep-alives
if (isEnvTruthy(process.env.CLAUDE_CODE_REMOTE)) {
return
}
this.keepAliveInterval = setInterval(() => {
if (this.state === 'connected' && this.ws) {
try {
this.ws.send(KEEP_ALIVE_FRAME)
this.lastActivityTime = Date.now()
logForDebugging(
'WebSocketTransport: Sent periodic keep_alive data frame',
)
} catch (error) {
logForDebugging(
`WebSocketTransport: Periodic keep_alive failed: ${error}`,
{ level: 'error' },
)
logForDiagnosticsNoPII('error', 'cli_websocket_keepalive_failed')
}
}
}, DEFAULT_KEEPALIVE_INTERVAL)
}
private stopKeepaliveInterval(): void {
if (this.keepAliveInterval) {
clearInterval(this.keepAliveInterval)
this.keepAliveInterval = null
}
}
}

131
src/cli/transports/WorkerStateUploader.ts Normal file
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@ -0,0 +1,131 @@
import { sleep } from '../../utils/sleep.js'
/**
* Coalescing uploader for PUT /worker (session state + metadata).
*
* - 1 in-flight PUT + 1 pending patch
* - New calls coalesce into pending (never grows beyond 1 slot)
* - On success: send pending if exists
* - On failure: exponential backoff (clamped), retries indefinitely
* until success or close(). Absorbs any pending patches before each retry.
* - No backpressure needed — naturally bounded at 2 slots
*
* Coalescing rules:
* - Top-level keys (worker_status, external_metadata) — last value wins
* - Inside external_metadata / internal_metadata — RFC 7396 merge:
* keys are added/overwritten, null values preserved (server deletes)
*/
type WorkerStateUploaderConfig = {
send: (body: Record<string, unknown>) => Promise<boolean>
/** Base delay for exponential backoff (ms) */
baseDelayMs: number
/** Max delay cap (ms) */
maxDelayMs: number
/** Random jitter range added to retry delay (ms) */
jitterMs: number
}
export class WorkerStateUploader {
private inflight: Promise<void> | null = null
private pending: Record<string, unknown> | null = null
private closed = false
private readonly config: WorkerStateUploaderConfig
constructor(config: WorkerStateUploaderConfig) {
this.config = config
}
/**
* Enqueue a patch to PUT /worker. Coalesces with any existing pending
* patch. Fire-and-forget — callers don't need to await.
*/
enqueue(patch: Record<string, unknown>): void {
if (this.closed) return
this.pending = this.pending ? coalescePatches(this.pending, patch) : patch
void this.drain()
}
close(): void {
this.closed = true
this.pending = null
}
private async drain(): Promise<void> {
if (this.inflight || this.closed) return
if (!this.pending) return
const payload = this.pending
this.pending = null
this.inflight = this.sendWithRetry(payload).then(() => {
this.inflight = null
if (this.pending && !this.closed) {
void this.drain()
}
})
}
/** Retries indefinitely with exponential backoff until success or close(). */
private async sendWithRetry(payload: Record<string, unknown>): Promise<void> {
let current = payload
let failures = 0
while (!this.closed) {
const ok = await this.config.send(current)
if (ok) return
failures++
await sleep(this.retryDelay(failures))
// Absorb any patches that arrived during the retry
if (this.pending && !this.closed) {
current = coalescePatches(current, this.pending)
this.pending = null
}
}
}
private retryDelay(failures: number): number {
const exponential = Math.min(
this.config.baseDelayMs * 2 ** (failures - 1),
this.config.maxDelayMs,
)
const jitter = Math.random() * this.config.jitterMs
return exponential + jitter
}
}
/**
* Coalesce two patches for PUT /worker.
*
* Top-level keys: overlay replaces base (last value wins).
* Metadata keys (external_metadata, internal_metadata): RFC 7396 merge
* one level deep — overlay keys are added/overwritten, null values
* preserved for server-side delete.
*/
function coalescePatches(
base: Record<string, unknown>,
overlay: Record<string, unknown>,
): Record<string, unknown> {
const merged = { ...base }
for (const [key, value] of Object.entries(overlay)) {
if (
(key === 'external_metadata' || key === 'internal_metadata') &&
merged[key] &&
typeof merged[key] === 'object' &&
typeof value === 'object' &&
value !== null
) {
// RFC 7396 merge — overlay keys win, nulls preserved for server
merged[key] = {
...(merged[key] as Record<string, unknown>),
...(value as Record<string, unknown>),
}
} else {
merged[key] = value
}
}
return merged
}

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src/cli/transports/ccrClient.ts Normal file
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import { randomUUID } from 'crypto'
import type {
SDKPartialAssistantMessage,
StdoutMessage,
} from 'src/entrypoints/sdk/controlTypes.js'
import { decodeJwtExpiry } from '../../bridge/jwtUtils.js'
import { logForDebugging } from '../../utils/debug.js'
import { logForDiagnosticsNoPII } from '../../utils/diagLogs.js'
import { errorMessage, getErrnoCode } from '../../utils/errors.js'
import { createAxiosInstance } from '../../utils/proxy.js'
import {
registerSessionActivityCallback,
unregisterSessionActivityCallback,
} from '../../utils/sessionActivity.js'
import {
getSessionIngressAuthHeaders,
getSessionIngressAuthToken,
} from '../../utils/sessionIngressAuth.js'
import type {
RequiresActionDetails,
SessionState,
} from '../../utils/sessionState.js'
import { sleep } from '../../utils/sleep.js'
import { getClaudeCodeUserAgent } from '../../utils/userAgent.js'
import {
RetryableError,
SerialBatchEventUploader,
} from './SerialBatchEventUploader.js'
import type { SSETransport, StreamClientEvent } from './SSETransport.js'
import { WorkerStateUploader } from './WorkerStateUploader.js'
/** Default interval between heartbeat events (20s; server TTL is 60s). */
const DEFAULT_HEARTBEAT_INTERVAL_MS = 20_000
/**
* stream_event messages accumulate in a delay buffer for up to this many ms
* before enqueue. Mirrors HybridTransport's batching window. text_delta
* events for the same content block accumulate into a single full-so-far
* snapshot per flush — each emitted event is self-contained so a client
* connecting mid-stream sees complete text, not a fragment.
*/
const STREAM_EVENT_FLUSH_INTERVAL_MS = 100
/** Hoisted axios validateStatus callback to avoid per-request closure allocation. */
function alwaysValidStatus(): boolean {
return true
}
export type CCRInitFailReason =
| 'no_auth_headers'
| 'missing_epoch'
| 'worker_register_failed'
/** Thrown by initialize(); carries a typed reason for the diag classifier. */
export class CCRInitError extends Error {
constructor(readonly reason: CCRInitFailReason) {
super(`CCRClient init failed: ${reason}`)
}
}
/**
* Consecutive 401/403 with a VALID-LOOKING token before giving up. An
* expired JWT short-circuits this (exits immediately — deterministic,
* retry is futile). This threshold is for the uncertain case: token's
* exp is in the future but server says 401 (userauth down, KMS hiccup,
* clock skew). 10 × 20s heartbeat ≈ 200s to ride it out.
*/
const MAX_CONSECUTIVE_AUTH_FAILURES = 10
type EventPayload = {
uuid: string
type: string
[key: string]: unknown
}
type ClientEvent = {
payload: EventPayload
ephemeral?: boolean
}
/**
* Structural subset of a stream_event carrying a text_delta. Not a narrowing
* of SDKPartialAssistantMessage — RawMessageStreamEvent's delta is a union and
* narrowing through two levels defeats the discriminant.
*/
type CoalescedStreamEvent = {
type: 'stream_event'
uuid: string
session_id: string
parent_tool_use_id: string | null
event: {
type: 'content_block_delta'
index: number
delta: { type: 'text_delta'; text: string }
}
}
/**
* Accumulator state for text_delta coalescing. Keyed by API message ID so
* lifetime is tied to the assistant message — cleared when the complete
* SDKAssistantMessage arrives (writeEvent), which is reliable even when
* abort/error paths skip content_block_stop/message_stop delivery.
*/
export type StreamAccumulatorState = {
/** API message ID (msg_...) → blocks[blockIndex] → chunk array. */
byMessage: Map<string, string[][]>
/**
* {session_id}:{parent_tool_use_id} → active message ID.
* content_block_delta events don't carry the message ID (only
* message_start does), so we track which message is currently streaming
* for each scope. At most one message streams per scope at a time.
*/
scopeToMessage: Map<string, string>
}
export function createStreamAccumulator(): StreamAccumulatorState {
return { byMessage: new Map(), scopeToMessage: new Map() }
}
function scopeKey(m: {
session_id: string
parent_tool_use_id: string | null
}): string {
return `${m.session_id}:${m.parent_tool_use_id ?? ''}`
}
/**
* Accumulate text_delta stream_events into full-so-far snapshots per content
* block. Each flush emits ONE event per touched block containing the FULL
* accumulated text from the start of the block — a client connecting
* mid-stream receives a self-contained snapshot, not a fragment.
*
* Non-text-delta events pass through unchanged. message_start records the
* active message ID for the scope; content_block_delta appends chunks;
* the snapshot event reuses the first text_delta UUID seen for that block in
* this flush so server-side idempotency remains stable across retries.
*
* Cleanup happens in writeEvent when the complete assistant message arrives
* (reliable), not here on stop events (abort/error paths skip those).
*/
export function accumulateStreamEvents(
buffer: SDKPartialAssistantMessage[],
state: StreamAccumulatorState,
): EventPayload[] {
const out: EventPayload[] = []
// chunks[] → snapshot already in `out` this flush. Keyed by the chunks
// array reference (stable per {messageId, index}) so subsequent deltas
// rewrite the same entry instead of emitting one event per delta.
const touched = new Map<string[], CoalescedStreamEvent>()
for (const msg of buffer) {
switch (msg.event.type) {
case 'message_start': {
const id = msg.event.message.id
const prevId = state.scopeToMessage.get(scopeKey(msg))
if (prevId) state.byMessage.delete(prevId)
state.scopeToMessage.set(scopeKey(msg), id)
state.byMessage.set(id, [])
out.push(msg)
break
}
case 'content_block_delta': {
if (msg.event.delta.type !== 'text_delta') {
out.push(msg)
break
}
const messageId = state.scopeToMessage.get(scopeKey(msg))
const blocks = messageId ? state.byMessage.get(messageId) : undefined
if (!blocks) {
// Delta without a preceding message_start (reconnect mid-stream,
// or message_start was in a prior buffer that got dropped). Pass
// through raw — can't produce a full-so-far snapshot without the
// prior chunks anyway.
out.push(msg)
break
}
const chunks = (blocks[msg.event.index] ??= [])
chunks.push(msg.event.delta.text)
const existing = touched.get(chunks)
if (existing) {
existing.event.delta.text = chunks.join('')
break
}
const snapshot: CoalescedStreamEvent = {
type: 'stream_event',
uuid: msg.uuid,
session_id: msg.session_id,
parent_tool_use_id: msg.parent_tool_use_id,
event: {
type: 'content_block_delta',
index: msg.event.index,
delta: { type: 'text_delta', text: chunks.join('') },
},
}
touched.set(chunks, snapshot)
out.push(snapshot)
break
}
default:
out.push(msg)
}
}
return out
}
/**
* Clear accumulator entries for a completed assistant message. Called from
* writeEvent when the SDKAssistantMessage arrives — the reliable end-of-stream
* signal that fires even when abort/interrupt/error skip SSE stop events.
*/
export function clearStreamAccumulatorForMessage(
state: StreamAccumulatorState,
assistant: {
session_id: string
parent_tool_use_id: string | null
message: { id: string }
},
): void {
state.byMessage.delete(assistant.message.id)
const scope = scopeKey(assistant)
if (state.scopeToMessage.get(scope) === assistant.message.id) {
state.scopeToMessage.delete(scope)
}
}
type RequestResult = { ok: true } | { ok: false; retryAfterMs?: number }
type WorkerEvent = {
payload: EventPayload
is_compaction?: boolean
agent_id?: string
}
export type InternalEvent = {
event_id: string
event_type: string
payload: Record<string, unknown>
event_metadata?: Record<string, unknown> | null
is_compaction: boolean
created_at: string
agent_id?: string
}
type ListInternalEventsResponse = {
data: InternalEvent[]
next_cursor?: string
}
type WorkerStateResponse = {
worker?: {
external_metadata?: Record<string, unknown>
}
}
/**
* Manages the worker lifecycle protocol with CCR v2:
* - Epoch management: reads worker_epoch from CLAUDE_CODE_WORKER_EPOCH env var
* - Runtime state reporting: PUT /sessions/{id}/worker
* - Heartbeat: POST /sessions/{id}/worker/heartbeat for liveness detection
*
* All writes go through this.request().
*/
export class CCRClient {
private workerEpoch = 0
private readonly heartbeatIntervalMs: number
private readonly heartbeatJitterFraction: number
private heartbeatTimer: NodeJS.Timeout | null = null
private heartbeatInFlight = false
private closed = false
private consecutiveAuthFailures = 0
private currentState: SessionState | null = null
private readonly sessionBaseUrl: string
private readonly sessionId: string
private readonly http = createAxiosInstance({ keepAlive: true })
// stream_event delay buffer — accumulates content deltas for up to
// STREAM_EVENT_FLUSH_INTERVAL_MS before enqueueing (reduces POST count
// and enables text_delta coalescing). Mirrors HybridTransport's pattern.
private streamEventBuffer: SDKPartialAssistantMessage[] = []
private streamEventTimer: ReturnType<typeof setTimeout> | null = null
// Full-so-far text accumulator. Persists across flushes so each emitted
// text_delta event carries the complete text from the start of the block —
// mid-stream reconnects see a self-contained snapshot. Keyed by API message
// ID; cleared in writeEvent when the complete assistant message arrives.
private streamTextAccumulator = createStreamAccumulator()
private readonly workerState: WorkerStateUploader
private readonly eventUploader: SerialBatchEventUploader<ClientEvent>
private readonly internalEventUploader: SerialBatchEventUploader<WorkerEvent>
private readonly deliveryUploader: SerialBatchEventUploader<{
eventId: string
status: 'received' | 'processing' | 'processed'
}>
/**
* Called when the server returns 409 (a newer worker epoch superseded ours).
* Default: process.exit(1) — correct for spawn-mode children where the
* parent bridge re-spawns. In-process callers (replBridge) MUST override
* this to close gracefully instead; exit would kill the user's REPL.
*/
private readonly onEpochMismatch: () => never
/**
* Auth header source. Defaults to the process-wide session-ingress token
* (CLAUDE_CODE_SESSION_ACCESS_TOKEN env var). Callers managing multiple
* concurrent sessions with distinct JWTs MUST inject this — the env-var
* path is a process global and would stomp across sessions.
*/
private readonly getAuthHeaders: () => Record<string, string>
constructor(
transport: SSETransport,
sessionUrl: URL,
opts?: {
onEpochMismatch?: () => never
heartbeatIntervalMs?: number
heartbeatJitterFraction?: number
/**
* Per-instance auth header source. Omit to read the process-wide
* CLAUDE_CODE_SESSION_ACCESS_TOKEN (single-session callers — REPL,
* daemon). Required for concurrent multi-session callers.
*/
getAuthHeaders?: () => Record<string, string>
},
) {
this.onEpochMismatch =
opts?.onEpochMismatch ??
(() => {
// eslint-disable-next-line custom-rules/no-process-exit
process.exit(1)
})
this.heartbeatIntervalMs =
opts?.heartbeatIntervalMs ?? DEFAULT_HEARTBEAT_INTERVAL_MS
this.heartbeatJitterFraction = opts?.heartbeatJitterFraction ?? 0
this.getAuthHeaders = opts?.getAuthHeaders ?? getSessionIngressAuthHeaders
// Session URL: https://host/v1/code/sessions/{id}
if (sessionUrl.protocol !== 'http:' && sessionUrl.protocol !== 'https:') {
throw new Error(
`CCRClient: Expected http(s) URL, got ${sessionUrl.protocol}`,
)
}
const pathname = sessionUrl.pathname.replace(/\/$/, '')
this.sessionBaseUrl = `${sessionUrl.protocol}//${sessionUrl.host}${pathname}`
// Extract session ID from the URL path (last segment)
this.sessionId = pathname.split('/').pop() || ''
this.workerState = new WorkerStateUploader({
send: body =>
this.request(
'put',
'/worker',
{ worker_epoch: this.workerEpoch, ...body },
'PUT worker',
).then(r => r.ok),
baseDelayMs: 500,
maxDelayMs: 30_000,
jitterMs: 500,
})
this.eventUploader = new SerialBatchEventUploader<ClientEvent>({
maxBatchSize: 100,
maxBatchBytes: 10 * 1024 * 1024,
// flushStreamEventBuffer() enqueues a full 100ms window of accumulated
// stream_events in one call. A burst of mixed delta types that don't
// fold into a single snapshot could exceed the old cap (50) and deadlock
// on the SerialBatchEventUploader backpressure check. Match
// HybridTransport's bound — high enough to be memory-only.
maxQueueSize: 100_000,
send: async batch => {
const result = await this.request(
'post',
'/worker/events',
{ worker_epoch: this.workerEpoch, events: batch },
'client events',
)
if (!result.ok) {
throw new RetryableError(
'client event POST failed',
result.retryAfterMs,
)
}
},
baseDelayMs: 500,
maxDelayMs: 30_000,
jitterMs: 500,
})
this.internalEventUploader = new SerialBatchEventUploader<WorkerEvent>({
maxBatchSize: 100,
maxBatchBytes: 10 * 1024 * 1024,
maxQueueSize: 200,
send: async batch => {
const result = await this.request(
'post',
'/worker/internal-events',
{ worker_epoch: this.workerEpoch, events: batch },
'internal events',
)
if (!result.ok) {
throw new RetryableError(
'internal event POST failed',
result.retryAfterMs,
)
}
},
baseDelayMs: 500,
maxDelayMs: 30_000,
jitterMs: 500,
})
this.deliveryUploader = new SerialBatchEventUploader<{
eventId: string
status: 'received' | 'processing' | 'processed'
}>({
maxBatchSize: 64,
maxQueueSize: 64,
send: async batch => {
const result = await this.request(
'post',
'/worker/events/delivery',
{
worker_epoch: this.workerEpoch,
updates: batch.map(d => ({
event_id: d.eventId,
status: d.status,
})),
},
'delivery batch',
)
if (!result.ok) {
throw new RetryableError('delivery POST failed', result.retryAfterMs)
}
},
baseDelayMs: 500,
maxDelayMs: 30_000,
jitterMs: 500,
})
// Ack each received client_event so CCR can track delivery status.
// Wired here (not in initialize()) so the callback is registered the
// moment new CCRClient() returns — remoteIO must be free to call
// transport.connect() immediately after without racing the first
// SSE catch-up frame against an unwired onEventCallback.
transport.setOnEvent((event: StreamClientEvent) => {
this.reportDelivery(event.event_id, 'received')
})
}
/**
* Initialize the session worker:
* 1. Take worker_epoch from the argument, or fall back to
* CLAUDE_CODE_WORKER_EPOCH (set by env-manager / bridge spawner)
* 2. Report state as 'idle'
* 3. Start heartbeat timer
*
* In-process callers (replBridge) pass the epoch directly — they
* registered the worker themselves and there is no parent process
* setting env vars.
*/
async initialize(epoch?: number): Promise<Record<string, unknown> | null> {
const startMs = Date.now()
if (Object.keys(this.getAuthHeaders()).length === 0) {
throw new CCRInitError('no_auth_headers')
}
if (epoch === undefined) {
const rawEpoch = process.env.CLAUDE_CODE_WORKER_EPOCH
epoch = rawEpoch ? parseInt(rawEpoch, 10) : NaN
}
if (isNaN(epoch)) {
throw new CCRInitError('missing_epoch')
}
this.workerEpoch = epoch
// Concurrent with the init PUT — neither depends on the other.
const restoredPromise = this.getWorkerState()
const result = await this.request(
'put',
'/worker',
{
worker_status: 'idle',
worker_epoch: this.workerEpoch,
// Clear stale pending_action/task_summary left by a prior
// worker crash — the in-session clears don't survive process restart.
external_metadata: {
pending_action: null,
task_summary: null,
},
},
'PUT worker (init)',
)
if (!result.ok) {
// 409 → onEpochMismatch may throw, but request() catches it and returns
// false. Without this check we'd continue to startHeartbeat(), leaking a
// 20s timer against a dead epoch. Throw so connect()'s rejection handler
// fires instead of the success path.
throw new CCRInitError('worker_register_failed')
}
this.currentState = 'idle'
this.startHeartbeat()
// sessionActivity's refcount-gated timer fires while an API call or tool
// is in-flight; without a write the container lease can expire mid-wait.
// v1 wires this in WebSocketTransport per-connection.
registerSessionActivityCallback(() => {
void this.writeEvent({ type: 'keep_alive' })
})
logForDebugging(`CCRClient: initialized, epoch=${this.workerEpoch}`)
logForDiagnosticsNoPII('info', 'cli_worker_lifecycle_initialized', {
epoch: this.workerEpoch,
duration_ms: Date.now() - startMs,
})
// Await the concurrent GET and log state_restored here, after the PUT
// has succeeded — logging inside getWorkerState() raced: if the GET
// resolved before the PUT failed, diagnostics showed both init_failed
// and state_restored for the same session.
const { metadata, durationMs } = await restoredPromise
if (!this.closed) {
logForDiagnosticsNoPII('info', 'cli_worker_state_restored', {
duration_ms: durationMs,
had_state: metadata !== null,
})
}
return metadata
}
// Control_requests are marked processed and not re-delivered on
// restart, so read back what the prior worker wrote.
private async getWorkerState(): Promise<{
metadata: Record<string, unknown> | null
durationMs: number
}> {
const startMs = Date.now()
const authHeaders = this.getAuthHeaders()
if (Object.keys(authHeaders).length === 0) {
return { metadata: null, durationMs: 0 }
}
const data = await this.getWithRetry<WorkerStateResponse>(
`${this.sessionBaseUrl}/worker`,
authHeaders,
'worker_state',
)
return {
metadata: data?.worker?.external_metadata ?? null,
durationMs: Date.now() - startMs,
}
}
/**
* Send an authenticated HTTP request to CCR. Handles auth headers,
* 409 epoch mismatch, and error logging. Returns { ok: true } on 2xx.
* On 429, reads Retry-After (integer seconds) so the uploader can honor
* the server's backoff hint instead of blindly exponentiating.
*/
private async request(
method: 'post' | 'put',
path: string,
body: unknown,
label: string,
{ timeout = 10_000 }: { timeout?: number } = {},
): Promise<RequestResult> {
const authHeaders = this.getAuthHeaders()
if (Object.keys(authHeaders).length === 0) return { ok: false }
try {
const response = await this.http[method](
`${this.sessionBaseUrl}${path}`,
body,
{
headers: {
...authHeaders,
'Content-Type': 'application/json',
'anthropic-version': '2023-06-01',
'User-Agent': getClaudeCodeUserAgent(),
},
validateStatus: alwaysValidStatus,
timeout,
},
)
if (response.status >= 200 && response.status < 300) {
this.consecutiveAuthFailures = 0
return { ok: true }
}
if (response.status === 409) {
this.handleEpochMismatch()
}
if (response.status === 401 || response.status === 403) {
// A 401 with an expired JWT is deterministic — no retry will
// ever succeed. Check the token's own exp before burning
// wall-clock on the threshold loop.
const tok = getSessionIngressAuthToken()
const exp = tok ? decodeJwtExpiry(tok) : null
if (exp !== null && exp * 1000 < Date.now()) {
logForDebugging(
`CCRClient: session_token expired (exp=${new Date(exp * 1000).toISOString()}) — no refresh was delivered, exiting`,
{ level: 'error' },
)
logForDiagnosticsNoPII('error', 'cli_worker_token_expired_no_refresh')
this.onEpochMismatch()
}
// Token looks valid but server says 401 — possible server-side
// blip (userauth down, KMS hiccup). Count toward threshold.
this.consecutiveAuthFailures++
if (this.consecutiveAuthFailures >= MAX_CONSECUTIVE_AUTH_FAILURES) {
logForDebugging(
`CCRClient: ${this.consecutiveAuthFailures} consecutive auth failures with a valid-looking token — server-side auth unrecoverable, exiting`,
{ level: 'error' },
)
logForDiagnosticsNoPII('error', 'cli_worker_auth_failures_exhausted')
this.onEpochMismatch()
}
}
logForDebugging(`CCRClient: ${label} returned ${response.status}`, {
level: 'warn',
})
logForDiagnosticsNoPII('warn', 'cli_worker_request_failed', {
method,
path,
status: response.status,
})
if (response.status === 429) {
const raw = response.headers?.['retry-after']
const seconds = typeof raw === 'string' ? parseInt(raw, 10) : NaN
if (!isNaN(seconds) && seconds >= 0) {
return { ok: false, retryAfterMs: seconds * 1000 }
}
}
return { ok: false }
} catch (error) {
logForDebugging(`CCRClient: ${label} failed: ${errorMessage(error)}`, {
level: 'warn',
})
logForDiagnosticsNoPII('warn', 'cli_worker_request_error', {
method,
path,
error_code: getErrnoCode(error),
})
return { ok: false }
}
}
/** Report worker state to CCR via PUT /sessions/{id}/worker. */
reportState(state: SessionState, details?: RequiresActionDetails): void {
if (state === this.currentState && !details) return
this.currentState = state
this.workerState.enqueue({
worker_status: state,
requires_action_details: details
? {
tool_name: details.tool_name,
action_description: details.action_description,
request_id: details.request_id,
}
: null,
})
}
/** Report external metadata to CCR via PUT /worker. */
reportMetadata(metadata: Record<string, unknown>): void {
this.workerState.enqueue({ external_metadata: metadata })
}
/**
* Handle epoch mismatch (409 Conflict). A newer CC instance has replaced
* this one — exit immediately.
*/
private handleEpochMismatch(): never {
logForDebugging('CCRClient: Epoch mismatch (409), shutting down', {
level: 'error',
})
logForDiagnosticsNoPII('error', 'cli_worker_epoch_mismatch')
this.onEpochMismatch()
}
/** Start periodic heartbeat. */
private startHeartbeat(): void {
this.stopHeartbeat()
const schedule = (): void => {
const jitter =
this.heartbeatIntervalMs *
this.heartbeatJitterFraction *
(2 * Math.random() - 1)
this.heartbeatTimer = setTimeout(tick, this.heartbeatIntervalMs + jitter)
}
const tick = (): void => {
void this.sendHeartbeat()
// stopHeartbeat nulls the timer; check after the fire-and-forget send
// but before rescheduling so close() during sendHeartbeat is honored.
if (this.heartbeatTimer === null) return
schedule()
}
schedule()
}
/** Stop heartbeat timer. */
private stopHeartbeat(): void {
if (this.heartbeatTimer) {
clearTimeout(this.heartbeatTimer)
this.heartbeatTimer = null
}
}
/** Send a heartbeat via POST /sessions/{id}/worker/heartbeat. */
private async sendHeartbeat(): Promise<void> {
if (this.heartbeatInFlight) return
this.heartbeatInFlight = true
try {
const result = await this.request(
'post',
'/worker/heartbeat',
{ session_id: this.sessionId, worker_epoch: this.workerEpoch },
'Heartbeat',
{ timeout: 5_000 },
)
if (result.ok) {
logForDebugging('CCRClient: Heartbeat sent')
}
} finally {
this.heartbeatInFlight = false
}
}
/**
* Write a StdoutMessage as a client event via POST /sessions/{id}/worker/events.
* These events are visible to frontend clients via the SSE stream.
* Injects a UUID if missing to ensure server-side idempotency on retry.
*
* stream_event messages are held in a 100ms delay buffer and accumulated
* (text_deltas for the same content block emit a full-so-far snapshot per
* flush). A non-stream_event write flushes the buffer first so downstream
* ordering is preserved.
*/
async writeEvent(message: StdoutMessage): Promise<void> {
if (message.type === 'stream_event') {
this.streamEventBuffer.push(message)
if (!this.streamEventTimer) {
this.streamEventTimer = setTimeout(
() => void this.flushStreamEventBuffer(),
STREAM_EVENT_FLUSH_INTERVAL_MS,
)
}
return
}
await this.flushStreamEventBuffer()
if (message.type === 'assistant') {
clearStreamAccumulatorForMessage(this.streamTextAccumulator, message)
}
await this.eventUploader.enqueue(this.toClientEvent(message))
}
/** Wrap a StdoutMessage as a ClientEvent, injecting a UUID if missing. */
private toClientEvent(message: StdoutMessage): ClientEvent {
const msg = message as unknown as Record<string, unknown>
return {
payload: {
...msg,
uuid: typeof msg.uuid === 'string' ? msg.uuid : randomUUID(),
} as EventPayload,
}
}
/**
* Drain the stream_event delay buffer: accumulate text_deltas into
* full-so-far snapshots, clear the timer, enqueue the resulting events.
* Called from the timer, from writeEvent on a non-stream message, and from
* flush(). close() drops the buffer — call flush() first if you need
* delivery.
*/
private async flushStreamEventBuffer(): Promise<void> {
if (this.streamEventTimer) {
clearTimeout(this.streamEventTimer)
this.streamEventTimer = null
}
if (this.streamEventBuffer.length === 0) return
const buffered = this.streamEventBuffer
this.streamEventBuffer = []
const payloads = accumulateStreamEvents(
buffered,
this.streamTextAccumulator,
)
await this.eventUploader.enqueue(
payloads.map(payload => ({ payload, ephemeral: true })),
)
}
/**
* Write an internal worker event via POST /sessions/{id}/worker/internal-events.
* These events are NOT visible to frontend clients — they store worker-internal
* state (transcript messages, compaction markers) needed for session resume.
*/
async writeInternalEvent(
eventType: string,
payload: Record<string, unknown>,
{
isCompaction = false,
agentId,
}: {
isCompaction?: boolean
agentId?: string
} = {},
): Promise<void> {
const event: WorkerEvent = {
payload: {
type: eventType,
...payload,
uuid: typeof payload.uuid === 'string' ? payload.uuid : randomUUID(),
} as EventPayload,
...(isCompaction && { is_compaction: true }),
...(agentId && { agent_id: agentId }),
}
await this.internalEventUploader.enqueue(event)
}
/**
* Flush pending internal events. Call between turns and on shutdown
* to ensure transcript entries are persisted.
*/
flushInternalEvents(): Promise<void> {
return this.internalEventUploader.flush()
}
/**
* Flush pending client events (writeEvent queue). Call before close()
* when the caller needs delivery confirmation — close() abandons the
* queue. Resolves once the uploader drains or rejects; returns
* regardless of whether individual POSTs succeeded (check server state
* separately if that matters).
*/
async flush(): Promise<void> {
await this.flushStreamEventBuffer()
return this.eventUploader.flush()
}
/**
* Read foreground agent internal events from
* GET /sessions/{id}/worker/internal-events.
* Returns transcript entries from the last compaction boundary, or null on failure.
* Used for session resume.
*/
async readInternalEvents(): Promise<InternalEvent[] | null> {
return this.paginatedGet('/worker/internal-events', {}, 'internal_events')
}
/**
* Read all subagent internal events from
* GET /sessions/{id}/worker/internal-events?subagents=true.
* Returns a merged stream across all non-foreground agents, each from its
* compaction point. Used for session resume.
*/
async readSubagentInternalEvents(): Promise<InternalEvent[] | null> {
return this.paginatedGet(
'/worker/internal-events',
{ subagents: 'true' },
'subagent_events',
)
}
/**
* Paginated GET with retry. Fetches all pages from a list endpoint,
* retrying each page on failure with exponential backoff + jitter.
*/
private async paginatedGet(
path: string,
params: Record<string, string>,
context: string,
): Promise<InternalEvent[] | null> {
const authHeaders = this.getAuthHeaders()
if (Object.keys(authHeaders).length === 0) return null
const allEvents: InternalEvent[] = []
let cursor: string | undefined
do {
const url = new URL(`${this.sessionBaseUrl}${path}`)
for (const [k, v] of Object.entries(params)) {
url.searchParams.set(k, v)
}
if (cursor) {
url.searchParams.set('cursor', cursor)
}
const page = await this.getWithRetry<ListInternalEventsResponse>(
url.toString(),
authHeaders,
context,
)
if (!page) return null
allEvents.push(...(page.data ?? []))
cursor = page.next_cursor
} while (cursor)
logForDebugging(
`CCRClient: Read ${allEvents.length} internal events from ${path}${params.subagents ? ' (subagents)' : ''}`,
)
return allEvents
}
/**
* Single GET request with retry. Returns the parsed response body
* on success, null if all retries are exhausted.
*/
private async getWithRetry<T>(
url: string,
authHeaders: Record<string, string>,
context: string,
): Promise<T | null> {
for (let attempt = 1; attempt <= 10; attempt++) {
let response
try {
response = await this.http.get<T>(url, {
headers: {
...authHeaders,
'anthropic-version': '2023-06-01',
'User-Agent': getClaudeCodeUserAgent(),
},
validateStatus: alwaysValidStatus,
timeout: 30_000,
})
} catch (error) {
logForDebugging(
`CCRClient: GET ${url} failed (attempt ${attempt}/10): ${errorMessage(error)}`,
{ level: 'warn' },
)
if (attempt < 10) {
const delay =
Math.min(500 * 2 ** (attempt - 1), 30_000) + Math.random() * 500
await sleep(delay)
}
continue
}
if (response.status >= 200 && response.status < 300) {
return response.data
}
if (response.status === 409) {
this.handleEpochMismatch()
}
logForDebugging(
`CCRClient: GET ${url} returned ${response.status} (attempt ${attempt}/10)`,
{ level: 'warn' },
)
if (attempt < 10) {
const delay =
Math.min(500 * 2 ** (attempt - 1), 30_000) + Math.random() * 500
await sleep(delay)
}
}
logForDebugging('CCRClient: GET retries exhausted', { level: 'error' })
logForDiagnosticsNoPII('error', 'cli_worker_get_retries_exhausted', {
context,
})
return null
}
/**
* Report delivery status for a client-to-worker event.
* POST /v1/code/sessions/{id}/worker/events/delivery (batch endpoint)
*/
reportDelivery(
eventId: string,
status: 'received' | 'processing' | 'processed',
): void {
void this.deliveryUploader.enqueue({ eventId, status })
}
/** Get the current epoch (for external use). */
getWorkerEpoch(): number {
return this.workerEpoch
}
/** Internal-event queue depth — shutdown-snapshot backpressure signal. */
get internalEventsPending(): number {
return this.internalEventUploader.pendingCount
}
/** Clean up uploaders and timers. */
close(): void {
this.closed = true
this.stopHeartbeat()
unregisterSessionActivityCallback()
if (this.streamEventTimer) {
clearTimeout(this.streamEventTimer)
this.streamEventTimer = null
}
this.streamEventBuffer = []
this.streamTextAccumulator.byMessage.clear()
this.streamTextAccumulator.scopeToMessage.clear()
this.workerState.close()
this.eventUploader.close()
this.internalEventUploader.close()
this.deliveryUploader.close()
}
}

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import { URL } from 'url'
import { isEnvTruthy } from '../../utils/envUtils.js'
import { HybridTransport } from './HybridTransport.js'
import { SSETransport } from './SSETransport.js'
import type { Transport } from './Transport.js'
import { WebSocketTransport } from './WebSocketTransport.js'
/**
* Helper function to get the appropriate transport for a URL.
*
* Transport selection priority:
* 1. SSETransport (SSE reads + POST writes) when CLAUDE_CODE_USE_CCR_V2 is set
* 2. HybridTransport (WS reads + POST writes) when CLAUDE_CODE_POST_FOR_SESSION_INGRESS_V2 is set
* 3. WebSocketTransport (WS reads + WS writes) — default
*/
export function getTransportForUrl(
url: URL,
headers: Record<string, string> = {},
sessionId?: string,
refreshHeaders?: () => Record<string, string>,
): Transport {
if (isEnvTruthy(process.env.CLAUDE_CODE_USE_CCR_V2)) {
// v2: SSE for reads, HTTP POST for writes
// --sdk-url is the session URL (.../sessions/{id});
// derive the SSE stream URL by appending /worker/events/stream
const sseUrl = new URL(url.href)
if (sseUrl.protocol === 'wss:') {
sseUrl.protocol = 'https:'
} else if (sseUrl.protocol === 'ws:') {
sseUrl.protocol = 'http:'
}
sseUrl.pathname =
sseUrl.pathname.replace(/\/$/, '') + '/worker/events/stream'
return new SSETransport(sseUrl, headers, sessionId, refreshHeaders)
}
if (url.protocol === 'ws:' || url.protocol === 'wss:') {
if (isEnvTruthy(process.env.CLAUDE_CODE_POST_FOR_SESSION_INGRESS_V2)) {
return new HybridTransport(url, headers, sessionId, refreshHeaders)
}
return new WebSocketTransport(url, headers, sessionId, refreshHeaders)
} else {
throw new Error(`Unsupported protocol: ${url.protocol}`)
}
}

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import chalk from 'chalk'
import { logEvent } from 'src/services/analytics/index.js'
import {
getLatestVersion,
type InstallStatus,
installGlobalPackage,
} from 'src/utils/autoUpdater.js'
import { regenerateCompletionCache } from 'src/utils/completionCache.js'
import {
getGlobalConfig,
type InstallMethod,
saveGlobalConfig,
} from 'src/utils/config.js'
import { logForDebugging } from 'src/utils/debug.js'
import { getDoctorDiagnostic } from 'src/utils/doctorDiagnostic.js'
import { gracefulShutdown } from 'src/utils/gracefulShutdown.js'
import {
installOrUpdateClaudePackage,
localInstallationExists,
} from 'src/utils/localInstaller.js'
import {
installLatest as installLatestNative,
removeInstalledSymlink,
} from 'src/utils/nativeInstaller/index.js'
import { getPackageManager } from 'src/utils/nativeInstaller/packageManagers.js'
import { writeToStdout } from 'src/utils/process.js'
import { gte } from 'src/utils/semver.js'
import { getInitialSettings } from 'src/utils/settings/settings.js'
export async function update() {
logEvent('tengu_update_check', {})
writeToStdout(`Current version: ${MACRO.VERSION}\n`)
const channel = getInitialSettings()?.autoUpdatesChannel ?? 'latest'
writeToStdout(`Checking for updates to ${channel} version...\n`)
logForDebugging('update: Starting update check')
// Run diagnostic to detect potential issues
logForDebugging('update: Running diagnostic')
const diagnostic = await getDoctorDiagnostic()
logForDebugging(`update: Installation type: ${diagnostic.installationType}`)
logForDebugging(
`update: Config install method: ${diagnostic.configInstallMethod}`,
)
// Check for multiple installations
if (diagnostic.multipleInstallations.length > 1) {
writeToStdout('\n')
writeToStdout(chalk.yellow('Warning: Multiple installations found') + '\n')
for (const install of diagnostic.multipleInstallations) {
const current =
diagnostic.installationType === install.type
? ' (currently running)'
: ''
writeToStdout(`- ${install.type} at ${install.path}${current}\n`)
}
}
// Display warnings if any exist
if (diagnostic.warnings.length > 0) {
writeToStdout('\n')
for (const warning of diagnostic.warnings) {
logForDebugging(`update: Warning detected: ${warning.issue}`)
// Don't skip PATH warnings - they're always relevant
// The user needs to know that 'which claude' points elsewhere
logForDebugging(`update: Showing warning: ${warning.issue}`)
writeToStdout(chalk.yellow(`Warning: ${warning.issue}\n`))
writeToStdout(chalk.bold(`Fix: ${warning.fix}\n`))
}
}
// Update config if installMethod is not set (but skip for package managers)
const config = getGlobalConfig()
if (
!config.installMethod &&
diagnostic.installationType !== 'package-manager'
) {
writeToStdout('\n')
writeToStdout('Updating configuration to track installation method...\n')
let detectedMethod: 'local' | 'native' | 'global' | 'unknown' = 'unknown'
// Map diagnostic installation type to config install method
switch (diagnostic.installationType) {
case 'npm-local':
detectedMethod = 'local'
break
case 'native':
detectedMethod = 'native'
break
case 'npm-global':
detectedMethod = 'global'
break
default:
detectedMethod = 'unknown'
}
saveGlobalConfig(current => ({
...current,
installMethod: detectedMethod,
}))
writeToStdout(`Installation method set to: ${detectedMethod}\n`)
}
// Check if running from development build
if (diagnostic.installationType === 'development') {
writeToStdout('\n')
writeToStdout(
chalk.yellow('Warning: Cannot update development build') + '\n',
)
await gracefulShutdown(1)
}
// Check if running from a package manager
if (diagnostic.installationType === 'package-manager') {
const packageManager = await getPackageManager()
writeToStdout('\n')
if (packageManager === 'homebrew') {
writeToStdout('Claude is managed by Homebrew.\n')
const latest = await getLatestVersion(channel)
if (latest && !gte(MACRO.VERSION, latest)) {
writeToStdout(`Update available: ${MACRO.VERSION} → ${latest}\n`)
writeToStdout('\n')
writeToStdout('To update, run:\n')
writeToStdout(chalk.bold(' brew upgrade claude-code') + '\n')
} else {
writeToStdout('Claude is up to date!\n')
}
} else if (packageManager === 'winget') {
writeToStdout('Claude is managed by winget.\n')
const latest = await getLatestVersion(channel)
if (latest && !gte(MACRO.VERSION, latest)) {
writeToStdout(`Update available: ${MACRO.VERSION} → ${latest}\n`)
writeToStdout('\n')
writeToStdout('To update, run:\n')
writeToStdout(
chalk.bold(' winget upgrade Anthropic.ClaudeCode') + '\n',
)
} else {
writeToStdout('Claude is up to date!\n')
}
} else if (packageManager === 'apk') {
writeToStdout('Claude is managed by apk.\n')
const latest = await getLatestVersion(channel)
if (latest && !gte(MACRO.VERSION, latest)) {
writeToStdout(`Update available: ${MACRO.VERSION} → ${latest}\n`)
writeToStdout('\n')
writeToStdout('To update, run:\n')
writeToStdout(chalk.bold(' apk upgrade claude-code') + '\n')
} else {
writeToStdout('Claude is up to date!\n')
}
} else {
// pacman, deb, and rpm don't get specific commands because they each have
// multiple frontends (pacman: yay/paru/makepkg, deb: apt/apt-get/aptitude/nala,
// rpm: dnf/yum/zypper)
writeToStdout('Claude is managed by a package manager.\n')
writeToStdout('Please use your package manager to update.\n')
}
await gracefulShutdown(0)
}
// Check for config/reality mismatch (skip for package-manager installs)
if (
config.installMethod &&
diagnostic.configInstallMethod !== 'not set' &&
diagnostic.installationType !== 'package-manager'
) {
const runningType = diagnostic.installationType
const configExpects = diagnostic.configInstallMethod
// Map installation types for comparison
const typeMapping: Record<string, string> = {
'npm-local': 'local',
'npm-global': 'global',
native: 'native',
development: 'development',
unknown: 'unknown',
}
const normalizedRunningType = typeMapping[runningType] || runningType
if (
normalizedRunningType !== configExpects &&
configExpects !== 'unknown'
) {
writeToStdout('\n')
writeToStdout(chalk.yellow('Warning: Configuration mismatch') + '\n')
writeToStdout(`Config expects: ${configExpects} installation\n`)
writeToStdout(`Currently running: ${runningType}\n`)
writeToStdout(
chalk.yellow(
`Updating the ${runningType} installation you are currently using`,
) + '\n',
)
// Update config to match reality
saveGlobalConfig(current => ({
...current,
installMethod: normalizedRunningType as InstallMethod,
}))
writeToStdout(
`Config updated to reflect current installation method: ${normalizedRunningType}\n`,
)
}
}
// Handle native installation updates first
if (diagnostic.installationType === 'native') {
logForDebugging(
'update: Detected native installation, using native updater',
)
try {
const result = await installLatestNative(channel, true)
// Handle lock contention gracefully
if (result.lockFailed) {
const pidInfo = result.lockHolderPid
? ` (PID ${result.lockHolderPid})`
: ''
writeToStdout(
chalk.yellow(
`Another Claude process${pidInfo} is currently running. Please try again in a moment.`,
) + '\n',
)
await gracefulShutdown(0)
}
if (!result.latestVersion) {
process.stderr.write('Failed to check for updates\n')
await gracefulShutdown(1)
}
if (result.latestVersion === MACRO.VERSION) {
writeToStdout(
chalk.green(`Claude Code is up to date (${MACRO.VERSION})`) + '\n',
)
} else {
writeToStdout(
chalk.green(
`Successfully updated from ${MACRO.VERSION} to version ${result.latestVersion}`,
) + '\n',
)
await regenerateCompletionCache()
}
await gracefulShutdown(0)
} catch (error) {
process.stderr.write('Error: Failed to install native update\n')
process.stderr.write(String(error) + '\n')
process.stderr.write('Try running "claude doctor" for diagnostics\n')
await gracefulShutdown(1)
}
}
// Fallback to existing JS/npm-based update logic
// Remove native installer symlink since we're not using native installation
// But only if user hasn't migrated to native installation
if (config.installMethod !== 'native') {
await removeInstalledSymlink()
}
logForDebugging('update: Checking npm registry for latest version')
logForDebugging(`update: Package URL: ${MACRO.PACKAGE_URL}`)
const npmTag = channel === 'stable' ? 'stable' : 'latest'
const npmCommand = `npm view ${MACRO.PACKAGE_URL}@${npmTag} version`
logForDebugging(`update: Running: ${npmCommand}`)
const latestVersion = await getLatestVersion(channel)
logForDebugging(
`update: Latest version from npm: ${latestVersion || 'FAILED'}`,
)
if (!latestVersion) {
logForDebugging('update: Failed to get latest version from npm registry')
process.stderr.write(chalk.red('Failed to check for updates') + '\n')
process.stderr.write('Unable to fetch latest version from npm registry\n')
process.stderr.write('\n')
process.stderr.write('Possible causes:\n')
process.stderr.write(' • Network connectivity issues\n')
process.stderr.write(' • npm registry is unreachable\n')
process.stderr.write(' • Corporate proxy/firewall blocking npm\n')
if (MACRO.PACKAGE_URL && !MACRO.PACKAGE_URL.startsWith('@anthropic')) {
process.stderr.write(
' • Internal/development build not published to npm\n',
)
}
process.stderr.write('\n')
process.stderr.write('Try:\n')
process.stderr.write(' • Check your internet connection\n')
process.stderr.write(' • Run with --debug flag for more details\n')
const packageName =
MACRO.PACKAGE_URL ||
(process.env.USER_TYPE === 'ant'
? '@anthropic-ai/claude-cli'
: '@anthropic-ai/claude-code')
process.stderr.write(
` • Manually check: npm view ${packageName} version\n`,
)
process.stderr.write(' • Check if you need to login: npm whoami\n')
await gracefulShutdown(1)
}
// Check if versions match exactly, including any build metadata (like SHA)
if (latestVersion === MACRO.VERSION) {
writeToStdout(
chalk.green(`Claude Code is up to date (${MACRO.VERSION})`) + '\n',
)
await gracefulShutdown(0)
}
writeToStdout(
`New version available: ${latestVersion} (current: ${MACRO.VERSION})\n`,
)
writeToStdout('Installing update...\n')
// Determine update method based on what's actually running
let useLocalUpdate = false
let updateMethodName = ''
switch (diagnostic.installationType) {
case 'npm-local':
useLocalUpdate = true
updateMethodName = 'local'
break
case 'npm-global':
useLocalUpdate = false
updateMethodName = 'global'
break
case 'unknown': {
// Fallback to detection if we can't determine installation type
const isLocal = await localInstallationExists()
useLocalUpdate = isLocal
updateMethodName = isLocal ? 'local' : 'global'
writeToStdout(
chalk.yellow('Warning: Could not determine installation type') + '\n',
)
writeToStdout(
`Attempting ${updateMethodName} update based on file detection...\n`,
)
break
}
default:
process.stderr.write(
`Error: Cannot update ${diagnostic.installationType} installation\n`,
)
await gracefulShutdown(1)
}
writeToStdout(`Using ${updateMethodName} installation update method...\n`)
logForDebugging(`update: Update method determined: ${updateMethodName}`)
logForDebugging(`update: useLocalUpdate: ${useLocalUpdate}`)
let status: InstallStatus
if (useLocalUpdate) {
logForDebugging(
'update: Calling installOrUpdateClaudePackage() for local update',
)
status = await installOrUpdateClaudePackage(channel)
} else {
logForDebugging('update: Calling installGlobalPackage() for global update')
status = await installGlobalPackage()
}
logForDebugging(`update: Installation status: ${status}`)
switch (status) {
case 'success':
writeToStdout(
chalk.green(
`Successfully updated from ${MACRO.VERSION} to version ${latestVersion}`,
) + '\n',
)
await regenerateCompletionCache()
break
case 'no_permissions':
process.stderr.write(
'Error: Insufficient permissions to install update\n',
)
if (useLocalUpdate) {
process.stderr.write('Try manually updating with:\n')
process.stderr.write(
` cd ~/.claude/local && npm update ${MACRO.PACKAGE_URL}\n`,
)
} else {
process.stderr.write('Try running with sudo or fix npm permissions\n')
process.stderr.write(
'Or consider using native installation with: claude install\n',
)
}
await gracefulShutdown(1)
break
case 'install_failed':
process.stderr.write('Error: Failed to install update\n')
if (useLocalUpdate) {
process.stderr.write('Try manually updating with:\n')
process.stderr.write(
` cd ~/.claude/local && npm update ${MACRO.PACKAGE_URL}\n`,
)
} else {
process.stderr.write(
'Or consider using native installation with: claude install\n',
)
}
await gracefulShutdown(1)
break
case 'in_progress':
process.stderr.write(
'Error: Another instance is currently performing an update\n',
)
process.stderr.write('Please wait and try again later\n')
await gracefulShutdown(1)
break
}
await gracefulShutdown(0)
}

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// biome-ignore-all assist/source/organizeImports: ANT-ONLY import markers must not be reordered
import addDir from './commands/add-dir/index.js'
import autofixPr from './commands/autofix-pr/index.js'
import backfillSessions from './commands/backfill-sessions/index.js'
import btw from './commands/btw/index.js'
import goodClaude from './commands/good-claude/index.js'
import issue from './commands/issue/index.js'
import feedback from './commands/feedback/index.js'
import clear from './commands/clear/index.js'
import color from './commands/color/index.js'
import commit from './commands/commit.js'
import copy from './commands/copy/index.js'
import desktop from './commands/desktop/index.js'
import commitPushPr from './commands/commit-push-pr.js'
import compact from './commands/compact/index.js'
import config from './commands/config/index.js'
import { context, contextNonInteractive } from './commands/context/index.js'
import cost from './commands/cost/index.js'
import diff from './commands/diff/index.js'
import ctx_viz from './commands/ctx_viz/index.js'
import doctor from './commands/doctor/index.js'
import memory from './commands/memory/index.js'
import help from './commands/help/index.js'
import ide from './commands/ide/index.js'
import init from './commands/init.js'
import initVerifiers from './commands/init-verifiers.js'
import keybindings from './commands/keybindings/index.js'
import login from './commands/login/index.js'
import logout from './commands/logout/index.js'
import installGitHubApp from './commands/install-github-app/index.js'
import installSlackApp from './commands/install-slack-app/index.js'
import breakCache from './commands/break-cache/index.js'
import mcp from './commands/mcp/index.js'
import mobile from './commands/mobile/index.js'
import onboarding from './commands/onboarding/index.js'
import pr_comments from './commands/pr_comments/index.js'
import releaseNotes from './commands/release-notes/index.js'
import rename from './commands/rename/index.js'
import resume from './commands/resume/index.js'
import review, { ultrareview } from './commands/review.js'
import session from './commands/session/index.js'
import share from './commands/share/index.js'
import skills from './commands/skills/index.js'
import status from './commands/status/index.js'
import tasks from './commands/tasks/index.js'
import teleport from './commands/teleport/index.js'
/* eslint-disable @typescript-eslint/no-require-imports */
const agentsPlatform =
process.env.USER_TYPE === 'ant'
? require('./commands/agents-platform/index.js').default
: null
/* eslint-enable @typescript-eslint/no-require-imports */
import securityReview from './commands/security-review.js'
import bughunter from './commands/bughunter/index.js'
import terminalSetup from './commands/terminalSetup/index.js'
import usage from './commands/usage/index.js'
import theme from './commands/theme/index.js'
import vim from './commands/vim/index.js'
import { feature } from 'bun:bundle'
// Dead code elimination: conditional imports
/* eslint-disable @typescript-eslint/no-require-imports */
const proactive =
feature('PROACTIVE') || feature('KAIROS')
? require('./commands/proactive.js').default
: null
const briefCommand =
feature('KAIROS') || feature('KAIROS_BRIEF')
? require('./commands/brief.js').default
: null
const assistantCommand = feature('KAIROS')
? require('./commands/assistant/index.js').default
: null
const bridge = feature('BRIDGE_MODE')
? require('./commands/bridge/index.js').default
: null
const remoteControlServerCommand =
feature('DAEMON') && feature('BRIDGE_MODE')
? require('./commands/remoteControlServer/index.js').default
: null
const voiceCommand = feature('VOICE_MODE')
? require('./commands/voice/index.js').default
: null
const forceSnip = feature('HISTORY_SNIP')
? require('./commands/force-snip.js').default
: null
const workflowsCmd = feature('WORKFLOW_SCRIPTS')
? (
require('./commands/workflows/index.js') as typeof import('./commands/workflows/index.js')
).default
: null
const webCmd = feature('CCR_REMOTE_SETUP')
? (
require('./commands/remote-setup/index.js') as typeof import('./commands/remote-setup/index.js')
).default
: null
const clearSkillIndexCache = feature('EXPERIMENTAL_SKILL_SEARCH')
? (
require('./services/skillSearch/localSearch.js') as typeof import('./services/skillSearch/localSearch.js')
).clearSkillIndexCache
: null
const subscribePr = feature('KAIROS_GITHUB_WEBHOOKS')
? require('./commands/subscribe-pr.js').default
: null
const ultraplan = feature('ULTRAPLAN')
? require('./commands/ultraplan.js').default
: null
const torch = feature('TORCH') ? require('./commands/torch.js').default : null
const peersCmd = feature('UDS_INBOX')
? (
require('./commands/peers/index.js') as typeof import('./commands/peers/index.js')
).default
: null
const forkCmd = feature('FORK_SUBAGENT')
? (
require('./commands/fork/index.js') as typeof import('./commands/fork/index.js')
).default
: null
const buddy = feature('BUDDY')
? (
require('./commands/buddy/index.js') as typeof import('./commands/buddy/index.js')
).default
: null
/* eslint-enable @typescript-eslint/no-require-imports */
import thinkback from './commands/thinkback/index.js'
import thinkbackPlay from './commands/thinkback-play/index.js'
import permissions from './commands/permissions/index.js'
import plan from './commands/plan/index.js'
import fast from './commands/fast/index.js'
import passes from './commands/passes/index.js'
import privacySettings from './commands/privacy-settings/index.js'
import hooks from './commands/hooks/index.js'
import files from './commands/files/index.js'
import branch from './commands/branch/index.js'
import agents from './commands/agents/index.js'
import plugin from './commands/plugin/index.js'
import reloadPlugins from './commands/reload-plugins/index.js'
import rewind from './commands/rewind/index.js'
import heapDump from './commands/heapdump/index.js'
import mockLimits from './commands/mock-limits/index.js'
import bridgeKick from './commands/bridge-kick.js'
import version from './commands/version.js'
import summary from './commands/summary/index.js'
import {
resetLimits,
resetLimitsNonInteractive,
} from './commands/reset-limits/index.js'
import antTrace from './commands/ant-trace/index.js'
import perfIssue from './commands/perf-issue/index.js'
import sandboxToggle from './commands/sandbox-toggle/index.js'
import chrome from './commands/chrome/index.js'
import stickers from './commands/stickers/index.js'
import advisor from './commands/advisor.js'
import { logError } from './utils/log.js'
import { toError } from './utils/errors.js'
import { logForDebugging } from './utils/debug.js'
import {
getSkillDirCommands,
clearSkillCaches,
getDynamicSkills,
} from './skills/loadSkillsDir.js'
import { getBundledSkills } from './skills/bundledSkills.js'
import { getBuiltinPluginSkillCommands } from './plugins/builtinPlugins.js'
import {
getPluginCommands,
clearPluginCommandCache,
getPluginSkills,
clearPluginSkillsCache,
} from './utils/plugins/loadPluginCommands.js'
import memoize from 'lodash-es/memoize.js'
import { isUsing3PServices, isClaudeAISubscriber } from './utils/auth.js'
import { isFirstPartyAnthropicBaseUrl } from './utils/model/providers.js'
import env from './commands/env/index.js'
import exit from './commands/exit/index.js'
import exportCommand from './commands/export/index.js'
import model from './commands/model/index.js'
import tag from './commands/tag/index.js'
import outputStyle from './commands/output-style/index.js'
import remoteEnv from './commands/remote-env/index.js'
import upgrade from './commands/upgrade/index.js'
import {
extraUsage,
extraUsageNonInteractive,
} from './commands/extra-usage/index.js'
import rateLimitOptions from './commands/rate-limit-options/index.js'
import statusline from './commands/statusline.js'
import effort from './commands/effort/index.js'
import stats from './commands/stats/index.js'
// insights.ts is 113KB (3200 lines, includes diffLines/html rendering). Lazy
// shim defers the heavy module until /insights is actually invoked.
const usageReport: Command = {
type: 'prompt',
name: 'insights',
description: 'Generate a report analyzing your Claude Code sessions',
contentLength: 0,
progressMessage: 'analyzing your sessions',
source: 'builtin',
async getPromptForCommand(args, context) {
const real = (await import('./commands/insights.js')).default
if (real.type !== 'prompt') throw new Error('unreachable')
return real.getPromptForCommand(args, context)
},
}
import oauthRefresh from './commands/oauth-refresh/index.js'
import debugToolCall from './commands/debug-tool-call/index.js'
import { getSettingSourceName } from './utils/settings/constants.js'
import {
type Command,
getCommandName,
isCommandEnabled,
} from './types/command.js'
// Re-export types from the centralized location
export type {
Command,
CommandBase,
CommandResultDisplay,
LocalCommandResult,
LocalJSXCommandContext,
PromptCommand,
ResumeEntrypoint,
} from './types/command.js'
export { getCommandName, isCommandEnabled } from './types/command.js'
// Commands that get eliminated from the external build
export const INTERNAL_ONLY_COMMANDS = [
backfillSessions,
breakCache,
bughunter,
commit,
commitPushPr,
ctx_viz,
goodClaude,
issue,
initVerifiers,
...(forceSnip ? [forceSnip] : []),
mockLimits,
bridgeKick,
version,
...(ultraplan ? [ultraplan] : []),
...(subscribePr ? [subscribePr] : []),
resetLimits,
resetLimitsNonInteractive,
onboarding,
share,
summary,
teleport,
antTrace,
perfIssue,
env,
oauthRefresh,
debugToolCall,
agentsPlatform,
autofixPr,
].filter(Boolean)
// Declared as a function so that we don't run this until getCommands is called,
// since underlying functions read from config, which can't be read at module initialization time
const COMMANDS = memoize((): Command[] => [
addDir,
advisor,
agents,
branch,
btw,
chrome,
clear,
color,
compact,
config,
copy,
desktop,
context,
contextNonInteractive,
cost,
diff,
doctor,
effort,
exit,
fast,
files,
heapDump,
help,
ide,
init,
keybindings,
installGitHubApp,
installSlackApp,
mcp,
memory,
mobile,
model,
outputStyle,
remoteEnv,
plugin,
pr_comments,
releaseNotes,
reloadPlugins,
rename,
resume,
session,
skills,
stats,
status,
statusline,
stickers,
tag,
theme,
feedback,
review,
ultrareview,
rewind,
securityReview,
terminalSetup,
upgrade,
extraUsage,
extraUsageNonInteractive,
rateLimitOptions,
usage,
usageReport,
vim,
...(webCmd ? [webCmd] : []),
...(forkCmd ? [forkCmd] : []),
...(buddy ? [buddy] : []),
...(proactive ? [proactive] : []),
...(briefCommand ? [briefCommand] : []),
...(assistantCommand ? [assistantCommand] : []),
...(bridge ? [bridge] : []),
...(remoteControlServerCommand ? [remoteControlServerCommand] : []),
...(voiceCommand ? [voiceCommand] : []),
thinkback,
thinkbackPlay,
permissions,
plan,
privacySettings,
hooks,
exportCommand,
sandboxToggle,
...(!isUsing3PServices() ? [logout, login()] : []),
passes,
...(peersCmd ? [peersCmd] : []),
tasks,
...(workflowsCmd ? [workflowsCmd] : []),
...(torch ? [torch] : []),
...(process.env.USER_TYPE === 'ant' && !process.env.IS_DEMO
? INTERNAL_ONLY_COMMANDS
: []),
])
export const builtInCommandNames = memoize(
(): Set<string> =>
new Set(COMMANDS().flatMap(_ => [_.name, ...(_.aliases ?? [])])),
)
async function getSkills(cwd: string): Promise<{
skillDirCommands: Command[]
pluginSkills: Command[]
bundledSkills: Command[]
builtinPluginSkills: Command[]
}> {
try {
const [skillDirCommands, pluginSkills] = await Promise.all([
getSkillDirCommands(cwd).catch(err => {
logError(toError(err))
logForDebugging(
'Skill directory commands failed to load, continuing without them',
)
return []
}),
getPluginSkills().catch(err => {
logError(toError(err))
logForDebugging('Plugin skills failed to load, continuing without them')
return []
}),
])
// Bundled skills are registered synchronously at startup
const bundledSkills = getBundledSkills()
// Built-in plugin skills come from enabled built-in plugins
const builtinPluginSkills = getBuiltinPluginSkillCommands()
logForDebugging(
`getSkills returning: ${skillDirCommands.length} skill dir commands, ${pluginSkills.length} plugin skills, ${bundledSkills.length} bundled skills, ${builtinPluginSkills.length} builtin plugin skills`,
)
return {
skillDirCommands,
pluginSkills,
bundledSkills,
builtinPluginSkills,
}
} catch (err) {
// This should never happen since we catch at the Promise level, but defensive
logError(toError(err))
logForDebugging('Unexpected error in getSkills, returning empty')
return {
skillDirCommands: [],
pluginSkills: [],
bundledSkills: [],
builtinPluginSkills: [],
}
}
}
/* eslint-disable @typescript-eslint/no-require-imports */
const getWorkflowCommands = feature('WORKFLOW_SCRIPTS')
? (
require('./tools/WorkflowTool/createWorkflowCommand.js') as typeof import('./tools/WorkflowTool/createWorkflowCommand.js')
).getWorkflowCommands
: null
/* eslint-enable @typescript-eslint/no-require-imports */
/**
* Filters commands by their declared `availability` (auth/provider requirement).
* Commands without `availability` are treated as universal.
* This runs before `isEnabled()` so that provider-gated commands are hidden
* regardless of feature-flag state.
*
* Not memoized — auth state can change mid-session (e.g. after /login),
* so this must be re-evaluated on every getCommands() call.
*/
export function meetsAvailabilityRequirement(cmd: Command): boolean {
if (!cmd.availability) return true
for (const a of cmd.availability) {
switch (a) {
case 'claude-ai':
if (isClaudeAISubscriber()) return true
break
case 'console':
// Console API key user = direct 1P API customer (not 3P, not claude.ai).
// Excludes 3P (Bedrock/Vertex/Foundry) who don't set ANTHROPIC_BASE_URL
// and gateway users who proxy through a custom base URL.
if (
!isClaudeAISubscriber() &&
!isUsing3PServices() &&
isFirstPartyAnthropicBaseUrl()
)
return true
break
default: {
const _exhaustive: never = a
void _exhaustive
break
}
}
}
return false
}
/**
* Loads all command sources (skills, plugins, workflows). Memoized by cwd
* because loading is expensive (disk I/O, dynamic imports).
*/
const loadAllCommands = memoize(async (cwd: string): Promise<Command[]> => {
const [
{ skillDirCommands, pluginSkills, bundledSkills, builtinPluginSkills },
pluginCommands,
workflowCommands,
] = await Promise.all([
getSkills(cwd),
getPluginCommands(),
getWorkflowCommands ? getWorkflowCommands(cwd) : Promise.resolve([]),
])
return [
...bundledSkills,
...builtinPluginSkills,
...skillDirCommands,
...workflowCommands,
...pluginCommands,
...pluginSkills,
...COMMANDS(),
]
})
/**
* Returns commands available to the current user. The expensive loading is
* memoized, but availability and isEnabled checks run fresh every call so
* auth changes (e.g. /login) take effect immediately.
*/
export async function getCommands(cwd: string): Promise<Command[]> {
const allCommands = await loadAllCommands(cwd)
// Get dynamic skills discovered during file operations
const dynamicSkills = getDynamicSkills()
// Build base commands without dynamic skills
const baseCommands = allCommands.filter(
_ => meetsAvailabilityRequirement(_) && isCommandEnabled(_),
)
if (dynamicSkills.length === 0) {
return baseCommands
}
// Dedupe dynamic skills - only add if not already present
const baseCommandNames = new Set(baseCommands.map(c => c.name))
const uniqueDynamicSkills = dynamicSkills.filter(
s =>
!baseCommandNames.has(s.name) &&
meetsAvailabilityRequirement(s) &&
isCommandEnabled(s),
)
if (uniqueDynamicSkills.length === 0) {
return baseCommands
}
// Insert dynamic skills after plugin skills but before built-in commands
const builtInNames = new Set(COMMANDS().map(c => c.name))
const insertIndex = baseCommands.findIndex(c => builtInNames.has(c.name))
if (insertIndex === -1) {
return [...baseCommands, ...uniqueDynamicSkills]
}
return [
...baseCommands.slice(0, insertIndex),
...uniqueDynamicSkills,
...baseCommands.slice(insertIndex),
]
}
/**
* Clears only the memoization caches for commands, WITHOUT clearing skill caches.
* Use this when dynamic skills are added to invalidate cached command lists.
*/
export function clearCommandMemoizationCaches(): void {
loadAllCommands.cache?.clear?.()
getSkillToolCommands.cache?.clear?.()
getSlashCommandToolSkills.cache?.clear?.()
// getSkillIndex in skillSearch/localSearch.ts is a separate memoization layer
// built ON TOP of getSkillToolCommands/getCommands. Clearing only the inner
// caches is a no-op for the outer — lodash memoize returns the cached result
// without ever reaching the cleared inners. Must clear it explicitly.
clearSkillIndexCache?.()
}
export function clearCommandsCache(): void {
clearCommandMemoizationCaches()
clearPluginCommandCache()
clearPluginSkillsCache()
clearSkillCaches()
}
/**
* Filter AppState.mcp.commands to MCP-provided skills (prompt-type,
* model-invocable, loaded from MCP). These live outside getCommands() so
* callers that need MCP skills in their skill index thread them through
* separately.
*/
export function getMcpSkillCommands(
mcpCommands: readonly Command[],
): readonly Command[] {
if (feature('MCP_SKILLS')) {
return mcpCommands.filter(
cmd =>
cmd.type === 'prompt' &&
cmd.loadedFrom === 'mcp' &&
!cmd.disableModelInvocation,
)
}
return []
}
// SkillTool shows ALL prompt-based commands that the model can invoke
// This includes both skills (from /skills/) and commands (from /commands/)
export const getSkillToolCommands = memoize(
async (cwd: string): Promise<Command[]> => {
const allCommands = await getCommands(cwd)
return allCommands.filter(
cmd =>
cmd.type === 'prompt' &&
!cmd.disableModelInvocation &&
cmd.source !== 'builtin' &&
// Always include skills from /skills/ dirs, bundled skills, and legacy /commands/ entries
// (they all get an auto-derived description from the first line if frontmatter is missing).
// Plugin/MCP commands still require an explicit description to appear in the listing.
(cmd.loadedFrom === 'bundled' ||
cmd.loadedFrom === 'skills' ||
cmd.loadedFrom === 'commands_DEPRECATED' ||
cmd.hasUserSpecifiedDescription ||
cmd.whenToUse),
)
},
)
// Filters commands to include only skills. Skills are commands that provide
// specialized capabilities for the model to use. They are identified by
// loadedFrom being 'skills', 'plugin', or 'bundled', or having disableModelInvocation set.
export const getSlashCommandToolSkills = memoize(
async (cwd: string): Promise<Command[]> => {
try {
const allCommands = await getCommands(cwd)
return allCommands.filter(
cmd =>
cmd.type === 'prompt' &&
cmd.source !== 'builtin' &&
(cmd.hasUserSpecifiedDescription || cmd.whenToUse) &&
(cmd.loadedFrom === 'skills' ||
cmd.loadedFrom === 'plugin' ||
cmd.loadedFrom === 'bundled' ||
cmd.disableModelInvocation),
)
} catch (error) {
logError(toError(error))
// Return empty array rather than throwing - skills are non-critical
// This prevents skill loading failures from breaking the entire system
logForDebugging('Returning empty skills array due to load failure')
return []
}
},
)
/**
* Commands that are safe to use in remote mode (--remote).
* These only affect local TUI state and don't depend on local filesystem,
* git, shell, IDE, MCP, or other local execution context.
*
* Used in two places:
* 1. Pre-filtering commands in main.tsx before REPL renders (prevents race with CCR init)
* 2. Preserving local-only commands in REPL's handleRemoteInit after CCR filters
*/
export const REMOTE_SAFE_COMMANDS: Set<Command> = new Set([
session, // Shows QR code / URL for remote session
exit, // Exit the TUI
clear, // Clear screen
help, // Show help
theme, // Change terminal theme
color, // Change agent color
vim, // Toggle vim mode
cost, // Show session cost (local cost tracking)
usage, // Show usage info
copy, // Copy last message
btw, // Quick note
feedback, // Send feedback
plan, // Plan mode toggle
keybindings, // Keybinding management
statusline, // Status line toggle
stickers, // Stickers
mobile, // Mobile QR code
])
/**
* Builtin commands of type 'local' that ARE safe to execute when received
* over the Remote Control bridge. These produce text output that streams
* back to the mobile/web client and have no terminal-only side effects.
*
* 'local-jsx' commands are blocked by type (they render Ink UI) and
* 'prompt' commands are allowed by type (they expand to text sent to the
* model) — this set only gates 'local' commands.
*
* When adding a new 'local' command that should work from mobile, add it
* here. Default is blocked.
*/
export const BRIDGE_SAFE_COMMANDS: Set<Command> = new Set(
[
compact, // Shrink context — useful mid-session from a phone
clear, // Wipe transcript
cost, // Show session cost
summary, // Summarize conversation
releaseNotes, // Show changelog
files, // List tracked files
].filter((c): c is Command => c !== null),
)
/**
* Whether a slash command is safe to execute when its input arrived over the
* Remote Control bridge (mobile/web client).
*
* PR #19134 blanket-blocked all slash commands from bridge inbound because
* `/model` from iOS was popping the local Ink picker. This predicate relaxes
* that with an explicit allowlist: 'prompt' commands (skills) expand to text
* and are safe by construction; 'local' commands need an explicit opt-in via
* BRIDGE_SAFE_COMMANDS; 'local-jsx' commands render Ink UI and stay blocked.
*/
export function isBridgeSafeCommand(cmd: Command): boolean {
if (cmd.type === 'local-jsx') return false
if (cmd.type === 'prompt') return true
return BRIDGE_SAFE_COMMANDS.has(cmd)
}
/**
* Filter commands to only include those safe for remote mode.
* Used to pre-filter commands when rendering the REPL in --remote mode,
* preventing local-only commands from being briefly available before
* the CCR init message arrives.
*/
export function filterCommandsForRemoteMode(commands: Command[]): Command[] {
return commands.filter(cmd => REMOTE_SAFE_COMMANDS.has(cmd))
}
export function findCommand(
commandName: string,
commands: Command[],
): Command | undefined {
return commands.find(
_ =>
_.name === commandName ||
getCommandName(_) === commandName ||
_.aliases?.includes(commandName),
)
}
export function hasCommand(commandName: string, commands: Command[]): boolean {
return findCommand(commandName, commands) !== undefined
}
export function getCommand(commandName: string, commands: Command[]): Command {
const command = findCommand(commandName, commands)
if (!command) {
throw ReferenceError(
`Command ${commandName} not found. Available commands: ${commands
.map(_ => {
const name = getCommandName(_)
return _.aliases ? `${name} (aliases: ${_.aliases.join(', ')})` : name
})
.sort((a, b) => a.localeCompare(b))
.join(', ')}`,
)
}
return command
}
/**
* Formats a command's description with its source annotation for user-facing UI.
* Use this in typeahead, help screens, and other places where users need to see
* where a command comes from.
*
* For model-facing prompts (like SkillTool), use cmd.description directly.
*/
export function formatDescriptionWithSource(cmd: Command): string {
if (cmd.type !== 'prompt') {
return cmd.description
}
if (cmd.kind === 'workflow') {
return `${cmd.description} (workflow)`
}
if (cmd.source === 'plugin') {
const pluginName = cmd.pluginInfo?.pluginManifest.name
if (pluginName) {
return `(${pluginName}) ${cmd.description}`
}
return `${cmd.description} (plugin)`
}
if (cmd.source === 'builtin' || cmd.source === 'mcp') {
return cmd.description
}
if (cmd.source === 'bundled') {
return `${cmd.description} (bundled)`
}
return `${cmd.description} (${getSettingSourceName(cmd.source)})`
}

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import type { Command } from '../../commands.js'
const addDir = {
type: 'local-jsx',
name: 'add-dir',
description: 'Add a new working directory',
argumentHint: '<path>',
load: () => import('./add-dir.js'),
} satisfies Command
export default addDir

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import chalk from 'chalk'
import { stat } from 'fs/promises'
import { dirname, resolve } from 'path'
import type { ToolPermissionContext } from '../../Tool.js'
import { getErrnoCode } from '../../utils/errors.js'
import { expandPath } from '../../utils/path.js'
import {
allWorkingDirectories,
pathInWorkingPath,
} from '../../utils/permissions/filesystem.js'
export type AddDirectoryResult =
| {
resultType: 'success'
absolutePath: string
}
| {
resultType: 'emptyPath'
}
| {
resultType: 'pathNotFound' | 'notADirectory'
directoryPath: string
absolutePath: string
}
| {
resultType: 'alreadyInWorkingDirectory'
directoryPath: string
workingDir: string
}
export async function validateDirectoryForWorkspace(
directoryPath: string,
permissionContext: ToolPermissionContext,
): Promise<AddDirectoryResult> {
if (!directoryPath) {
return {
resultType: 'emptyPath',
}
}
// resolve() strips the trailing slash expandPath can leave on absolute
// inputs, so /foo and /foo/ map to the same storage key (CC-33).
const absolutePath = resolve(expandPath(directoryPath))
// Check if path exists and is a directory (single syscall)
try {
const stats = await stat(absolutePath)
if (!stats.isDirectory()) {
return {
resultType: 'notADirectory',
directoryPath,
absolutePath,
}
}
} catch (e: unknown) {
const code = getErrnoCode(e)
// Match prior existsSync() semantics: treat any of these as "not found"
// rather than re-throwing. EACCES/EPERM in particular must not crash
// startup when a settings-configured additional directory is inaccessible.
if (
code === 'ENOENT' ||
code === 'ENOTDIR' ||
code === 'EACCES' ||
code === 'EPERM'
) {
return {
resultType: 'pathNotFound',
directoryPath,
absolutePath,
}
}
throw e
}
// Get current permission context
const currentWorkingDirs = allWorkingDirectories(permissionContext)
// Check if already within an existing working directory
for (const workingDir of currentWorkingDirs) {
if (pathInWorkingPath(absolutePath, workingDir)) {
return {
resultType: 'alreadyInWorkingDirectory',
directoryPath,
workingDir,
}
}
}
return {
resultType: 'success',
absolutePath,
}
}
export function addDirHelpMessage(result: AddDirectoryResult): string {
switch (result.resultType) {
case 'emptyPath':
return 'Please provide a directory path.'
case 'pathNotFound':
return `Path ${chalk.bold(result.absolutePath)} was not found.`
case 'notADirectory': {
const parentDir = dirname(result.absolutePath)
return `${chalk.bold(result.directoryPath)} is not a directory. Did you mean to add the parent directory ${chalk.bold(parentDir)}?`
}
case 'alreadyInWorkingDirectory':
return `${chalk.bold(result.directoryPath)} is already accessible within the existing working directory ${chalk.bold(result.workingDir)}.`
case 'success':
return `Added ${chalk.bold(result.absolutePath)} as a working directory.`
}
}

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import type { Command } from '../commands.js'
import type { LocalCommandCall } from '../types/command.js'
import {
canUserConfigureAdvisor,
isValidAdvisorModel,
modelSupportsAdvisor,
} from '../utils/advisor.js'
import {
getDefaultMainLoopModelSetting,
normalizeModelStringForAPI,
parseUserSpecifiedModel,
} from '../utils/model/model.js'
import { validateModel } from '../utils/model/validateModel.js'
import { updateSettingsForSource } from '../utils/settings/settings.js'
const call: LocalCommandCall = async (args, context) => {
const arg = args.trim().toLowerCase()
const baseModel = parseUserSpecifiedModel(
context.getAppState().mainLoopModel ?? getDefaultMainLoopModelSetting(),
)
if (!arg) {
const current = context.getAppState().advisorModel
if (!current) {
return {
type: 'text',
value:
'Advisor: not set\nUse "/advisor <model>" to enable (e.g. "/advisor opus").',
}
}
if (!modelSupportsAdvisor(baseModel)) {
return {
type: 'text',
value: `Advisor: ${current} (inactive)\nThe current model (${baseModel}) does not support advisors.`,
}
}
return {
type: 'text',
value: `Advisor: ${current}\nUse "/advisor unset" to disable or "/advisor <model>" to change.`,
}
}
if (arg === 'unset' || arg === 'off') {
const prev = context.getAppState().advisorModel
context.setAppState(s => {
if (s.advisorModel === undefined) return s
return { ...s, advisorModel: undefined }
})
updateSettingsForSource('userSettings', { advisorModel: undefined })
return {
type: 'text',
value: prev
? `Advisor disabled (was ${prev}).`
: 'Advisor already unset.',
}
}
const normalizedModel = normalizeModelStringForAPI(arg)
const resolvedModel = parseUserSpecifiedModel(arg)
const { valid, error } = await validateModel(resolvedModel)
if (!valid) {
return {
type: 'text',
value: error
? `Invalid advisor model: ${error}`
: `Unknown model: ${arg} (${resolvedModel})`,
}
}
if (!isValidAdvisorModel(resolvedModel)) {
return {
type: 'text',
value: `The model ${arg} (${resolvedModel}) cannot be used as an advisor`,
}
}
context.setAppState(s => {
if (s.advisorModel === normalizedModel) return s
return { ...s, advisorModel: normalizedModel }
})
updateSettingsForSource('userSettings', { advisorModel: normalizedModel })
if (!modelSupportsAdvisor(baseModel)) {
return {
type: 'text',
value: `Advisor set to ${normalizedModel}.\nNote: Your current model (${baseModel}) does not support advisors. Switch to a supported model to use the advisor.`,
}
}
return {
type: 'text',
value: `Advisor set to ${normalizedModel}.`,
}
}
const advisor = {
type: 'local',
name: 'advisor',
description: 'Configure the advisor model',
argumentHint: '[<model>|off]',
isEnabled: () => canUserConfigureAdvisor(),
get isHidden() {
return !canUserConfigureAdvisor()
},
supportsNonInteractive: true,
load: () => Promise.resolve({ call }),
} satisfies Command
export default advisor

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src/commands/agents-platform/index.ts Normal file
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const agentsPlatform = {
name: 'agents-platform',
type: 'local',
description: 'Unavailable in restored development build.',
supportsNonInteractive: true,
load: async () => ({
async call() {
return { type: 'skip' as const }
},
}),
}
export default agentsPlatform

12
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import * as React from 'react';
import { AgentsMenu } from '../../components/agents/AgentsMenu.js';
import type { ToolUseContext } from '../../Tool.js';
import { getTools } from '../../tools.js';
import type { LocalJSXCommandOnDone } from '../../types/command.js';
export async function call(onDone: LocalJSXCommandOnDone, context: ToolUseContext): Promise<React.ReactNode> {
const appState = context.getAppState();
const permissionContext = appState.toolPermissionContext;
const tools = getTools(permissionContext);
return <AgentsMenu tools={tools} onExit={onDone} />;
}
//# sourceMappingURL=data:application/json;charset=utf-8;base64,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

10
src/commands/agents/index.ts Normal file
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import type { Command } from '../../commands.js'
const agents = {
type: 'local-jsx',
name: 'agents',
description: 'Manage agent configurations',
load: () => import('./agents.js'),
} satisfies Command
export default agents

1
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export default { isEnabled: () => false, isHidden: true, name: 'stub' };

1
src/commands/autofix-pr/index.js Normal file
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export default { isEnabled: () => false, isHidden: true, name: 'stub' };

1
src/commands/backfill-sessions/index.js Normal file
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export default { isEnabled: () => false, isHidden: true, name: 'stub' };

296
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import { randomUUID, type UUID } from 'crypto'
import { mkdir, readFile, writeFile } from 'fs/promises'
import { getOriginalCwd, getSessionId } from '../../bootstrap/state.js'
import type { LocalJSXCommandContext } from '../../commands.js'
import { logEvent } from '../../services/analytics/index.js'
import type { LocalJSXCommandOnDone } from '../../types/command.js'
import type {
ContentReplacementEntry,
Entry,
LogOption,
SerializedMessage,
TranscriptMessage,
} from '../../types/logs.js'
import { parseJSONL } from '../../utils/json.js'
import {
getProjectDir,
getTranscriptPath,
getTranscriptPathForSession,
isTranscriptMessage,
saveCustomTitle,
searchSessionsByCustomTitle,
} from '../../utils/sessionStorage.js'
import { jsonStringify } from '../../utils/slowOperations.js'
import { escapeRegExp } from '../../utils/stringUtils.js'
type TranscriptEntry = TranscriptMessage & {
forkedFrom?: {
sessionId: string
messageUuid: UUID
}
}
/**
* Derive a single-line title base from the first user message.
* Collapses whitespace — multiline first messages (pasted stacks, code)
* otherwise flow into the saved title and break the resume hint.
*/
export function deriveFirstPrompt(
firstUserMessage: Extract<SerializedMessage, { type: 'user' }> | undefined,
): string {
const content = firstUserMessage?.message?.content
if (!content) return 'Branched conversation'
const raw =
typeof content === 'string'
? content
: content.find(
(block): block is { type: 'text'; text: string } =>
block.type === 'text',
)?.text
if (!raw) return 'Branched conversation'
return (
raw.replace(/\s+/g, ' ').trim().slice(0, 100) || 'Branched conversation'
)
}
/**
* Creates a fork of the current conversation by copying from the transcript file.
* Preserves all original metadata (timestamps, gitBranch, etc.) while updating
* sessionId and adding forkedFrom traceability.
*/
async function createFork(customTitle?: string): Promise<{
sessionId: UUID
title: string | undefined
forkPath: string
serializedMessages: SerializedMessage[]
contentReplacementRecords: ContentReplacementEntry['replacements']
}> {
const forkSessionId = randomUUID() as UUID
const originalSessionId = getSessionId()
const projectDir = getProjectDir(getOriginalCwd())
const forkSessionPath = getTranscriptPathForSession(forkSessionId)
const currentTranscriptPath = getTranscriptPath()
// Ensure project directory exists
await mkdir(projectDir, { recursive: true, mode: 0o700 })
// Read current transcript file
let transcriptContent: Buffer
try {
transcriptContent = await readFile(currentTranscriptPath)
} catch {
throw new Error('No conversation to branch')
}
if (transcriptContent.length === 0) {
throw new Error('No conversation to branch')
}
// Parse all transcript entries (messages + metadata entries like content-replacement)
const entries = parseJSONL<Entry>(transcriptContent)
// Filter to only main conversation messages (exclude sidechains and non-message entries)
const mainConversationEntries = entries.filter(
(entry): entry is TranscriptMessage =>
isTranscriptMessage(entry) && !entry.isSidechain,
)
// Content-replacement entries for the original session. These record which
// tool_result blocks were replaced with previews by the per-message budget.
// Without them in the fork JSONL, `claude -r {forkId}` reconstructs state
// with an empty replacements Map → previously-replaced results are classified
// as FROZEN and sent as full content (prompt cache miss + permanent overage).
// sessionId must be rewritten since loadTranscriptFile keys lookup by the
// session's messages' sessionId.
const contentReplacementRecords = entries
.filter(
(entry): entry is ContentReplacementEntry =>
entry.type === 'content-replacement' &&
entry.sessionId === originalSessionId,
)
.flatMap(entry => entry.replacements)
if (mainConversationEntries.length === 0) {
throw new Error('No messages to branch')
}
// Build forked entries with new sessionId and preserved metadata
let parentUuid: UUID | null = null
const lines: string[] = []
const serializedMessages: SerializedMessage[] = []
for (const entry of mainConversationEntries) {
// Create forked transcript entry preserving all original metadata
const forkedEntry: TranscriptEntry = {
...entry,
sessionId: forkSessionId,
parentUuid,
isSidechain: false,
forkedFrom: {
sessionId: originalSessionId,
messageUuid: entry.uuid,
},
}
// Build serialized message for LogOption
const serialized: SerializedMessage = {
...entry,
sessionId: forkSessionId,
}
serializedMessages.push(serialized)
lines.push(jsonStringify(forkedEntry))
if (entry.type !== 'progress') {
parentUuid = entry.uuid
}
}
// Append content-replacement entry (if any) with the fork's sessionId.
// Written as a SINGLE entry (same shape as insertContentReplacement) so
// loadTranscriptFile's content-replacement branch picks it up.
if (contentReplacementRecords.length > 0) {
const forkedReplacementEntry: ContentReplacementEntry = {
type: 'content-replacement',
sessionId: forkSessionId,
replacements: contentReplacementRecords,
}
lines.push(jsonStringify(forkedReplacementEntry))
}
// Write the fork session file
await writeFile(forkSessionPath, lines.join('\n') + '\n', {
encoding: 'utf8',
mode: 0o600,
})
return {
sessionId: forkSessionId,
title: customTitle,
forkPath: forkSessionPath,
serializedMessages,
contentReplacementRecords,
}
}
/**
* Generates a unique fork name by checking for collisions with existing session names.
* If "baseName (Branch)" already exists, tries "baseName (Branch 2)", "baseName (Branch 3)", etc.
*/
async function getUniqueForkName(baseName: string): Promise<string> {
const candidateName = `${baseName} (Branch)`
// Check if this exact name already exists
const existingWithExactName = await searchSessionsByCustomTitle(
candidateName,
{ exact: true },
)
if (existingWithExactName.length === 0) {
return candidateName
}
// Name collision - find a unique numbered suffix
// Search for all sessions that start with the base pattern
const existingForks = await searchSessionsByCustomTitle(`${baseName} (Branch`)
// Extract existing fork numbers to find the next available
const usedNumbers = new Set<number>([1]) // Consider " (Branch)" as number 1
const forkNumberPattern = new RegExp(
`^${escapeRegExp(baseName)} \\(Branch(?: (\\d+))?\\)$`,
)
for (const session of existingForks) {
const match = session.customTitle?.match(forkNumberPattern)
if (match) {
if (match[1]) {
usedNumbers.add(parseInt(match[1], 10))
} else {
usedNumbers.add(1) // " (Branch)" without number is treated as 1
}
}
}
// Find the next available number
let nextNumber = 2
while (usedNumbers.has(nextNumber)) {
nextNumber++
}
return `${baseName} (Branch ${nextNumber})`
}
export async function call(
onDone: LocalJSXCommandOnDone,
context: LocalJSXCommandContext,
args: string,
): Promise<React.ReactNode> {
const customTitle = args?.trim() || undefined
const originalSessionId = getSessionId()
try {
const {
sessionId,
title,
forkPath,
serializedMessages,
contentReplacementRecords,
} = await createFork(customTitle)
// Build LogOption for resume
const now = new Date()
const firstPrompt = deriveFirstPrompt(
serializedMessages.find(m => m.type === 'user'),
)
// Save custom title - use provided title or firstPrompt as default
// This ensures /status and /resume show the same session name
// Always add " (Branch)" suffix to make it clear this is a branched session
// Handle collisions by adding a number suffix (e.g., " (Branch 2)", " (Branch 3)")
const baseName = title ?? firstPrompt
const effectiveTitle = await getUniqueForkName(baseName)
await saveCustomTitle(sessionId, effectiveTitle, forkPath)
logEvent('tengu_conversation_forked', {
message_count: serializedMessages.length,
has_custom_title: !!title,
})
const forkLog: LogOption = {
date: now.toISOString().split('T')[0]!,
messages: serializedMessages,
fullPath: forkPath,
value: now.getTime(),
created: now,
modified: now,
firstPrompt,
messageCount: serializedMessages.length,
isSidechain: false,
sessionId,
customTitle: effectiveTitle,
contentReplacements: contentReplacementRecords,
}
// Resume into the fork
const titleInfo = title ? ` "${title}"` : ''
const resumeHint = `\nTo resume the original: claude -r ${originalSessionId}`
const successMessage = `Branched conversation${titleInfo}. You are now in the branch.${resumeHint}`
if (context.resume) {
await context.resume(sessionId, forkLog, 'fork')
onDone(successMessage, { display: 'system' })
} else {
// Fallback if resume not available
onDone(
`Branched conversation${titleInfo}. Resume with: /resume ${sessionId}`,
)
}
return null
} catch (error) {
const message =
error instanceof Error ? error.message : 'Unknown error occurred'
onDone(`Failed to branch conversation: ${message}`)
return null
}
}

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