Repository navigation
Expand file tree
/
Copy pathapi.ts
More file actions
718 lines (663 loc) · 25.5 KB
/
Copy pathapi.ts
File metadata and controls
718 lines (663 loc) · 25.5 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
import type Anthropic from '@anthropic-ai/sdk'
import type {
BetaTool,
BetaToolUnion,
} from '@anthropic-ai/sdk/resources/beta/messages/messages.mjs'
import { createHash } from 'crypto'
import { SYSTEM_PROMPT_DYNAMIC_BOUNDARY } from 'src/constants/prompts.js'
import { getSystemContext, getUserContext } from 'src/context.js'
import { isAnalyticsDisabled } from 'src/services/analytics/config.js'
import {
checkStatsigFeatureGate_CACHED_MAY_BE_STALE,
getFeatureValue_CACHED_MAY_BE_STALE,
} from 'src/services/analytics/growthbook.js'
import {
type AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
logEvent,
} from 'src/services/analytics/index.js'
import { prefetchAllMcpResources } from 'src/services/mcp/client.js'
import type { ScopedMcpServerConfig } from 'src/services/mcp/types.js'
import { BashTool } from 'src/tools/BashTool/BashTool.js'
import { FileEditTool } from 'src/tools/FileEditTool/FileEditTool.js'
import {
normalizeFileEditInput,
stripTrailingWhitespace,
} from 'src/tools/FileEditTool/utils.js'
import { FileWriteTool } from 'src/tools/FileWriteTool/FileWriteTool.js'
import { getTools } from 'src/tools.js'
import type { AgentId } from 'src/types/ids.js'
import type { z } from 'zod/v4'
import { CLI_SYSPROMPT_PREFIXES } from '../constants/system.js'
import { roughTokenCountEstimation } from '../services/tokenEstimation.js'
import type { Tool, ToolPermissionContext, Tools } from '../Tool.js'
import { AGENT_TOOL_NAME } from '../tools/AgentTool/constants.js'
import type { AgentDefinition } from '../tools/AgentTool/loadAgentsDir.js'
import { EXIT_PLAN_MODE_V2_TOOL_NAME } from '../tools/ExitPlanModeTool/constants.js'
import { TASK_OUTPUT_TOOL_NAME } from '../tools/TaskOutputTool/constants.js'
import type { Message } from '../types/message.js'
import { isAgentSwarmsEnabled } from './agentSwarmsEnabled.js'
import {
modelSupportsStructuredOutputs,
shouldUseGlobalCacheScope,
} from './betas.js'
import { getCwd } from './cwd.js'
import { logForDebugging } from './debug.js'
import { isEnvTruthy } from './envUtils.js'
import { createUserMessage } from './messages.js'
import {
getAPIProvider,
isFirstPartyAnthropicBaseUrl,
} from './model/providers.js'
import {
getFileReadIgnorePatterns,
normalizePatternsToPath,
} from './permissions/filesystem.js'
import {
getPlan,
getPlanFilePath,
persistFileSnapshotIfRemote,
} from './plans.js'
import { getPlatform } from './platform.js'
import { countFilesRoundedRg } from './ripgrep.js'
import { jsonStringify } from './slowOperations.js'
import type { SystemPrompt } from './systemPromptType.js'
import { getToolSchemaCache } from './toolSchemaCache.js'
import { windowsPathToPosixPath } from './windowsPaths.js'
import { zodToJsonSchema } from './zodToJsonSchema.js'
// Extended BetaTool type with strict mode and defer_loading support
type BetaToolWithExtras = BetaTool & {
strict?: boolean
defer_loading?: boolean
cache_control?: {
type: 'ephemeral'
scope?: 'global' | 'org'
ttl?: '5m' | '1h'
}
eager_input_streaming?: boolean
}
export type CacheScope = 'global' | 'org'
export type SystemPromptBlock = {
text: string
cacheScope: CacheScope | null
}
// Fields to filter from tool schemas when swarms are not enabled
const SWARM_FIELDS_BY_TOOL: Record<string, string[]> = {
[EXIT_PLAN_MODE_V2_TOOL_NAME]: ['launchSwarm', 'teammateCount'],
[AGENT_TOOL_NAME]: ['name', 'team_name', 'mode'],
}
/**
* Filter swarm-related fields from a tool's input schema.
* Called at runtime when isAgentSwarmsEnabled() returns false.
*/
function filterSwarmFieldsFromSchema(
toolName: string,
schema: Anthropic.Tool.InputSchema,
): Anthropic.Tool.InputSchema {
const fieldsToRemove = SWARM_FIELDS_BY_TOOL[toolName]
if (!fieldsToRemove || fieldsToRemove.length === 0) {
return schema
}
// Clone the schema to avoid mutating the original
const filtered = { ...schema }
const props = filtered.properties
if (props && typeof props === 'object') {
const filteredProps = { ...(props as Record<string, unknown>) }
for (const field of fieldsToRemove) {
delete filteredProps[field]
}
filtered.properties = filteredProps
}
return filtered
}
export async function toolToAPISchema(
tool: Tool,
options: {
getToolPermissionContext: () => Promise<ToolPermissionContext>
tools: Tools
agents: AgentDefinition[]
allowedAgentTypes?: string[]
model?: string
/** When true, mark this tool with defer_loading for tool search */
deferLoading?: boolean
cacheControl?: {
type: 'ephemeral'
scope?: 'global' | 'org'
ttl?: '5m' | '1h'
}
},
): Promise<BetaToolUnion> {
// Session-stable base schema: name, description, input_schema, strict,
// eager_input_streaming. These are computed once per session and cached to
// prevent mid-session GrowthBook flips (tengu_tool_pear, tengu_fgts) or
// tool.prompt() drift from churning the serialized tool array bytes.
// See toolSchemaCache.ts for rationale.
//
// Cache key includes inputJSONSchema when present. StructuredOutput instances
// share the name 'StructuredOutput' but carry different schemas per workflow
// call — name-only keying returned a stale schema (5.4% → 51% err rate, see
// PR#25424). MCP tools also set inputJSONSchema but each has a stable schema,
// so including it preserves their GB-flip cache stability.
const cacheKey =
'inputJSONSchema' in tool && tool.inputJSONSchema
? `${tool.name}:${jsonStringify(tool.inputJSONSchema)}`
: tool.name
const cache = getToolSchemaCache()
let base = cache.get(cacheKey)
if (!base) {
const strictToolsEnabled =
checkStatsigFeatureGate_CACHED_MAY_BE_STALE('tengu_tool_pear')
// Use tool's JSON schema directly if provided, otherwise convert Zod schema
let input_schema = (
'inputJSONSchema' in tool && tool.inputJSONSchema
? tool.inputJSONSchema
: zodToJsonSchema(tool.inputSchema)
) as Anthropic.Tool.InputSchema
// Filter out swarm-related fields when swarms are not enabled
// This ensures external non-EAP users don't see swarm features in the schema
if (!isAgentSwarmsEnabled()) {
input_schema = filterSwarmFieldsFromSchema(tool.name, input_schema)
}
base = {
name: tool.name,
description: await tool.prompt({
getToolPermissionContext: options.getToolPermissionContext,
tools: options.tools,
agents: options.agents,
allowedAgentTypes: options.allowedAgentTypes,
}),
input_schema,
}
// Only add strict if:
// 1. Feature flag is enabled
// 2. Tool has strict: true
// 3. Model is provided and supports it (not all models support it right now)
// (if model is not provided, assume we can't use strict tools)
if (
strictToolsEnabled &&
tool.strict === true &&
options.model &&
modelSupportsStructuredOutputs(options.model)
) {
base.strict = true
}
// Enable fine-grained tool streaming via per-tool API field.
// Without FGTS, the API buffers entire tool input parameters before sending
// input_json_delta events, causing multi-minute hangs on large tool inputs.
// Gated to direct api.anthropic.com: proxies (LiteLLM etc.) and Bedrock/Vertex
// with Claude 4.5 reject this field with 400. See GH#32742, PR #21729.
if (
getAPIProvider() === 'firstParty' &&
isFirstPartyAnthropicBaseUrl() &&
(getFeatureValue_CACHED_MAY_BE_STALE('tengu_fgts', false) ||
isEnvTruthy(process.env.CLAUDE_CODE_ENABLE_FINE_GRAINED_TOOL_STREAMING))
) {
base.eager_input_streaming = true
}
cache.set(cacheKey, base)
}
// Per-request overlay: defer_loading and cache_control vary by call
// (tool search defers different tools per turn; cache markers move).
// Explicit field copy avoids mutating the cached base and sidesteps
// BetaTool.cache_control's `| null` clashing with our narrower type.
const schema: BetaToolWithExtras = {
name: base.name,
description: base.description,
input_schema: base.input_schema,
...(base.strict && { strict: true }),
...(base.eager_input_streaming && { eager_input_streaming: true }),
}
// Add defer_loading if requested (for tool search feature)
if (options.deferLoading) {
schema.defer_loading = true
}
if (options.cacheControl) {
schema.cache_control = options.cacheControl
}
// CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS is the kill switch for beta API
// shapes. Proxy gateways (ANTHROPIC_BASE_URL → LiteLLM → Bedrock) reject
// fields like defer_loading with "Extra inputs are not permitted". The gates
// above each field are scattered and not all provider-aware, so this strips
// everything not in the base-tool allowlist at the one choke point all tool
// schemas pass through — including fields added in the future.
// cache_control is allowlisted: the base {type: 'ephemeral'} shape is
// standard prompt caching (Bedrock/Vertex supported); the beta sub-fields
// (scope, ttl) are already gated upstream by shouldIncludeFirstPartyOnlyBetas
// which independently respects this kill switch.
// github.com/anthropics/claude-code/issues/20031
if (isEnvTruthy(process.env.CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS)) {
const allowed = new Set([
'name',
'description',
'input_schema',
'cache_control',
])
const stripped = Object.keys(schema).filter(k => !allowed.has(k))
if (stripped.length > 0) {
logStripOnce(stripped)
return {
name: schema.name,
description: schema.description,
input_schema: schema.input_schema,
...(schema.cache_control && { cache_control: schema.cache_control }),
}
}
}
// Note: We cast to BetaTool but the extra fields are still present at runtime
// and will be serialized in the API request, even though they're not in the SDK's
// BetaTool type definition. This is intentional for beta features.
return schema as BetaTool
}
let loggedStrip = false
function logStripOnce(stripped: string[]): void {
if (loggedStrip) return
loggedStrip = true
logForDebugging(
`[betas] Stripped from tool schemas: [${stripped.join(', ')}] (CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS=1)`,
)
}
/**
* Log stats about first block for analyzing prefix matching config
* (see https://console.statsig.com/4aF3Ewatb6xPVpCwxb5nA3/dynamic_configs/claude_cli_system_prompt_prefixes)
*/
export function logAPIPrefix(systemPrompt: SystemPrompt): void {
const [firstSyspromptBlock] = splitSysPromptPrefix(systemPrompt)
const firstSystemPrompt = firstSyspromptBlock?.text
logEvent('tengu_sysprompt_block', {
snippet: firstSystemPrompt?.slice(
0,
20,
) as AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
length: firstSystemPrompt?.length ?? 0,
hash: (firstSystemPrompt
? createHash('sha256').update(firstSystemPrompt).digest('hex')
: '') as AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
})
}
/**
* Split system prompt blocks by content type for API matching and cache control.
* See https://console.statsig.com/4aF3Ewatb6xPVpCwxb5nA3/dynamic_configs/claude_cli_system_prompt_prefixes
*
* Behavior depends on feature flags and options:
*
* 1. MCP tools present (skipGlobalCacheForSystemPrompt=true):
* Returns up to 3 blocks with org-level caching (no global cache on system prompt):
* - Attribution header (cacheScope=null)
* - System prompt prefix (cacheScope='org')
* - Everything else concatenated (cacheScope='org')
*
* 2. Global cache mode with boundary marker (1P only, boundary found):
* Returns up to 4 blocks:
* - Attribution header (cacheScope=null)
* - System prompt prefix (cacheScope=null)
* - Static content before boundary (cacheScope='global')
* - Dynamic content after boundary (cacheScope=null)
*
* 3. Default mode (3P providers, or boundary missing):
* Returns up to 3 blocks with org-level caching:
* - Attribution header (cacheScope=null)
* - System prompt prefix (cacheScope='org')
* - Everything else concatenated (cacheScope='org')
*/
export function splitSysPromptPrefix(
systemPrompt: SystemPrompt,
options?: { skipGlobalCacheForSystemPrompt?: boolean },
): SystemPromptBlock[] {
const useGlobalCacheFeature = shouldUseGlobalCacheScope()
if (useGlobalCacheFeature && options?.skipGlobalCacheForSystemPrompt) {
logEvent('tengu_sysprompt_using_tool_based_cache', {
promptBlockCount: systemPrompt.length,
})
// Filter out boundary marker, return blocks without global scope
let attributionHeader: string | undefined
let systemPromptPrefix: string | undefined
const rest: string[] = []
for (const prompt of systemPrompt) {
if (!prompt) continue
if (prompt === SYSTEM_PROMPT_DYNAMIC_BOUNDARY) continue // Skip boundary
if (prompt.startsWith('x-anthropic-billing-header')) {
attributionHeader = prompt
} else if (CLI_SYSPROMPT_PREFIXES.has(prompt)) {
systemPromptPrefix = prompt
} else {
rest.push(prompt)
}
}
const result: SystemPromptBlock[] = []
if (attributionHeader) {
result.push({ text: attributionHeader, cacheScope: null })
}
if (systemPromptPrefix) {
result.push({ text: systemPromptPrefix, cacheScope: 'org' })
}
const restJoined = rest.join('\n\n')
if (restJoined) {
result.push({ text: restJoined, cacheScope: 'org' })
}
return result
}
if (useGlobalCacheFeature) {
const boundaryIndex = systemPrompt.findIndex(
s => s === SYSTEM_PROMPT_DYNAMIC_BOUNDARY,
)
if (boundaryIndex !== -1) {
let attributionHeader: string | undefined
let systemPromptPrefix: string | undefined
const staticBlocks: string[] = []
const dynamicBlocks: string[] = []
for (let i = 0; i < systemPrompt.length; i++) {
const block = systemPrompt[i]
if (!block || block === SYSTEM_PROMPT_DYNAMIC_BOUNDARY) continue
if (block.startsWith('x-anthropic-billing-header')) {
attributionHeader = block
} else if (CLI_SYSPROMPT_PREFIXES.has(block)) {
systemPromptPrefix = block
} else if (i < boundaryIndex) {
staticBlocks.push(block)
} else {
dynamicBlocks.push(block)
}
}
const result: SystemPromptBlock[] = []
if (attributionHeader)
result.push({ text: attributionHeader, cacheScope: null })
if (systemPromptPrefix)
result.push({ text: systemPromptPrefix, cacheScope: null })
const staticJoined = staticBlocks.join('\n\n')
if (staticJoined)
result.push({ text: staticJoined, cacheScope: 'global' })
const dynamicJoined = dynamicBlocks.join('\n\n')
if (dynamicJoined) result.push({ text: dynamicJoined, cacheScope: null })
logEvent('tengu_sysprompt_boundary_found', {
blockCount: result.length,
staticBlockLength: staticJoined.length,
dynamicBlockLength: dynamicJoined.length,
})
return result
} else {
logEvent('tengu_sysprompt_missing_boundary_marker', {
promptBlockCount: systemPrompt.length,
})
}
}
let attributionHeader: string | undefined
let systemPromptPrefix: string | undefined
const rest: string[] = []
for (const block of systemPrompt) {
if (!block) continue
if (block.startsWith('x-anthropic-billing-header')) {
attributionHeader = block
} else if (CLI_SYSPROMPT_PREFIXES.has(block)) {
systemPromptPrefix = block
} else {
rest.push(block)
}
}
const result: SystemPromptBlock[] = []
if (attributionHeader)
result.push({ text: attributionHeader, cacheScope: null })
if (systemPromptPrefix)
result.push({ text: systemPromptPrefix, cacheScope: 'org' })
const restJoined = rest.join('\n\n')
if (restJoined) result.push({ text: restJoined, cacheScope: 'org' })
return result
}
export function appendSystemContext(
systemPrompt: SystemPrompt,
context: { [k: string]: string },
): string[] {
return [
...systemPrompt,
Object.entries(context)
.map(([key, value]) => `${key}: ${value}`)
.join('\n'),
].filter(Boolean)
}
export function prependUserContext(
messages: Message[],
context: { [k: string]: string },
): Message[] {
if (process.env.NODE_ENV === 'test') {
return messages
}
if (Object.entries(context).length === 0) {
return messages
}
return [
createUserMessage({
content: `<system-reminder>\nAs you answer the user's questions, you can use the following context:\n${Object.entries(
context,
)
.map(([key, value]) => `# ${key}\n${value}`)
.join('\n')}
IMPORTANT: this context may or may not be relevant to your tasks. You should not respond to this context unless it is highly relevant to your task.\n</system-reminder>\n`,
isMeta: true,
}),
...messages,
]
}
/**
* Log metrics about context and system prompt size
*/
export async function logContextMetrics(
mcpConfigs: Record<string, ScopedMcpServerConfig>,
toolPermissionContext: ToolPermissionContext,
): Promise<void> {
// Early return if logging is disabled
if (isAnalyticsDisabled()) {
return
}
const [{ tools: mcpTools }, tools, userContext, systemContext] =
await Promise.all([
prefetchAllMcpResources(mcpConfigs),
getTools(toolPermissionContext),
getUserContext(),
getSystemContext(),
])
// Extract individual context sizes and calculate total
const gitStatusSize = systemContext.gitStatus?.length ?? 0
const claudeMdSize = userContext.claudeMd?.length ?? 0
// Calculate total context size
const totalContextSize = gitStatusSize + claudeMdSize
// Get file count using ripgrep (rounded to nearest power of 10 for privacy)
const currentDir = getCwd()
const ignorePatternsByRoot = getFileReadIgnorePatterns(toolPermissionContext)
const normalizedIgnorePatterns = normalizePatternsToPath(
ignorePatternsByRoot,
currentDir,
)
const fileCount = await countFilesRoundedRg(
currentDir,
AbortSignal.timeout(1000),
normalizedIgnorePatterns,
)
// Calculate tool metrics
let mcpToolsCount = 0
let mcpServersCount = 0
let mcpToolsTokens = 0
let nonMcpToolsCount = 0
let nonMcpToolsTokens = 0
const nonMcpTools = tools.filter(tool => !tool.isMcp)
mcpToolsCount = mcpTools.length
nonMcpToolsCount = nonMcpTools.length
// Extract unique server names from MCP tool names (format: mcp__servername__toolname)
const serverNames = new Set<string>()
for (const tool of mcpTools) {
const parts = tool.name.split('__')
if (parts.length >= 3 && parts[1]) {
serverNames.add(parts[1])
}
}
mcpServersCount = serverNames.size
// Estimate tool tokens locally for analytics (avoids N API calls per session)
// Use inputJSONSchema (plain JSON Schema) when available, otherwise convert Zod schema
for (const tool of mcpTools) {
const schema =
'inputJSONSchema' in tool && tool.inputJSONSchema
? tool.inputJSONSchema
: zodToJsonSchema(tool.inputSchema)
mcpToolsTokens += roughTokenCountEstimation(jsonStringify(schema))
}
for (const tool of nonMcpTools) {
const schema =
'inputJSONSchema' in tool && tool.inputJSONSchema
? tool.inputJSONSchema
: zodToJsonSchema(tool.inputSchema)
nonMcpToolsTokens += roughTokenCountEstimation(jsonStringify(schema))
}
logEvent('tengu_context_size', {
git_status_size: gitStatusSize,
claude_md_size: claudeMdSize,
total_context_size: totalContextSize,
project_file_count_rounded: fileCount,
mcp_tools_count: mcpToolsCount,
mcp_servers_count: mcpServersCount,
mcp_tools_tokens: mcpToolsTokens,
non_mcp_tools_count: nonMcpToolsCount,
non_mcp_tools_tokens: nonMcpToolsTokens,
})
}
// TODO: Generalize this to all tools
export function normalizeToolInput<T extends Tool>(
tool: T,
input: z.infer<T['inputSchema']>,
agentId?: AgentId,
): z.infer<T['inputSchema']> {
switch (tool.name) {
case EXIT_PLAN_MODE_V2_TOOL_NAME: {
// Always inject plan content and file path for ExitPlanModeV2 so hooks/SDK get the plan.
// The V2 tool reads plan from file instead of input, but hooks/SDK
const plan = getPlan(agentId)
const planFilePath = getPlanFilePath(agentId)
// Persist file snapshot for CCR sessions so the plan survives pod recycling
void persistFileSnapshotIfRemote()
return plan !== null ? { ...input, plan, planFilePath } : input
}
case BashTool.name: {
// Validated upstream, won't throw
const parsed = BashTool.inputSchema.parse(input)
const { command, timeout, description } = parsed
const cwd = getCwd()
let normalizedCommand = command.replace(`cd ${cwd} && `, '')
if (getPlatform() === 'windows') {
normalizedCommand = normalizedCommand.replace(
`cd ${windowsPathToPosixPath(cwd)} && `,
'',
)
}
// Replace \\; with \; (commonly needed for find -exec commands)
normalizedCommand = normalizedCommand.replace(/\\\\;/g, '\\;')
// Logging for commands that are only echoing a string. This is to help us understand how often Claude talks via bash
if (/^echo\s+["']?[^|&;><]*["']?$/i.test(normalizedCommand.trim())) {
logEvent('tengu_bash_tool_simple_echo', {})
}
// Check for run_in_background (may not exist in schema if CLAUDE_CODE_DISABLE_BACKGROUND_TASKS is set)
const run_in_background =
'run_in_background' in parsed ? parsed.run_in_background : undefined
// SAFETY: Cast is safe because input was validated by .parse() above.
// TypeScript can't narrow the generic T based on switch(tool.name), so it
// doesn't know the return type matches T['inputSchema']. This is a fundamental
// TS limitation with generics, not bypassable without major refactoring.
return {
command: normalizedCommand,
description,
...(timeout !== undefined && { timeout }),
...(description !== undefined && { description }),
...(run_in_background !== undefined && { run_in_background }),
...('dangerouslyDisableSandbox' in parsed &&
parsed.dangerouslyDisableSandbox !== undefined && {
dangerouslyDisableSandbox: parsed.dangerouslyDisableSandbox,
}),
} as z.infer<T['inputSchema']>
}
case FileEditTool.name: {
// Validated upstream, won't throw
const parsedInput = FileEditTool.inputSchema.parse(input)
// This is a workaround for tokens claude can't see
const { file_path, edits } = normalizeFileEditInput({
file_path: parsedInput.file_path,
edits: [
{
old_string: parsedInput.old_string,
new_string: parsedInput.new_string,
replace_all: parsedInput.replace_all,
},
],
})
// SAFETY: See comment in BashTool case above
return {
replace_all: edits[0]!.replace_all,
file_path,
old_string: edits[0]!.old_string,
new_string: edits[0]!.new_string,
} as z.infer<T['inputSchema']>
}
case FileWriteTool.name: {
// Validated upstream, won't throw
const parsedInput = FileWriteTool.inputSchema.parse(input)
// Markdown uses two trailing spaces as a hard line break — don't strip.
const isMarkdown = /\.(md|mdx)$/i.test(parsedInput.file_path)
// SAFETY: See comment in BashTool case above
return {
file_path: parsedInput.file_path,
content: isMarkdown
? parsedInput.content
: stripTrailingWhitespace(parsedInput.content),
} as z.infer<T['inputSchema']>
}
case TASK_OUTPUT_TOOL_NAME: {
// Normalize legacy parameter names from AgentOutputTool/BashOutputTool
const legacyInput = input as Record<string, unknown>
const taskId =
legacyInput.task_id ?? legacyInput.agentId ?? legacyInput.bash_id
const timeout =
legacyInput.timeout ??
(typeof legacyInput.wait_up_to === 'number'
? legacyInput.wait_up_to * 1000
: undefined)
// SAFETY: See comment in BashTool case above
return {
task_id: taskId ?? '',
block: legacyInput.block ?? true,
timeout: timeout ?? 30000,
} as z.infer<T['inputSchema']>
}
default:
return input
}
}
// Strips fields that were added by normalizeToolInput before sending to API
// (e.g., plan field from ExitPlanModeV2 which has an empty input schema)
export function normalizeToolInputForAPI<T extends Tool>(
tool: T,
input: z.infer<T['inputSchema']>,
): z.infer<T['inputSchema']> {
switch (tool.name) {
case EXIT_PLAN_MODE_V2_TOOL_NAME: {
// Strip injected fields before sending to API (schema expects empty object)
if (
input &&
typeof input === 'object' &&
('plan' in input || 'planFilePath' in input)
) {
const { plan, planFilePath, ...rest } = input as Record<string, unknown>
return rest as z.infer<T['inputSchema']>
}
return input
}
case FileEditTool.name: {
// Strip synthetic old_string/new_string/replace_all from OLD sessions
// that were resumed from transcripts written before PR #20357, where
// normalizeToolInput used to synthesize these. Needed so old --resume'd
// transcripts don't send whole-file copies to the API. New sessions
// don't need this (synthesis moved to emission time).
if (input && typeof input === 'object' && 'edits' in input) {
const { old_string, new_string, replace_all, ...rest } =
input as Record<string, unknown>
return rest as z.infer<T['inputSchema']>
}
return input
}
default:
return input
}
}