Skill

doc-fetcher

Fetch and index official Anthropic documentation for answering questions about Claude Code, the Agent SDK, MCP, skills, plugins, hooks, and monitoring. USE THIS SKILL whenever the user asks about Claude Code features, Agent SDK APIs, OTel configuration, cost tracking, secrets management, or any Anthropic platform documentation. Also trigger for "how does Claude Code...", "what's the SDK API for...", "check the docs", "latest changelog", or references to code.claude.com, platform.claude.com, or docs.anthropic.com. This skill acts as a local documentation oracle.

Install

npx claudepluginhub jadecli/claude-knowledge-sdk-typescript

Tool Access

This skill uses the workspace's default tool permissions.

Preview

Fetches and indexes official Anthropic documentation from three surfaces:

SKILL.md

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Last CommitMar 26, 2026

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doc-fetcher

Doc Fetcher Skill

Fetches and indexes official Anthropic documentation from three surfaces:

code.claude.com — Claude Code CLI, skills, plugins, hooks, monitoring

platform.claude.com — Agent SDK, custom tools, subagents, permissions

docs.anthropic.com — Messages API, analytics API, usage & cost API

Process

Check local cache at ~/.claude/knowledge/knowledge-index.json

If stale (>24h) or missing, fetch fresh docs using the fetcher script

Search the index for entries matching the user's question

Inject relevant doc content into context for answering

Cite sources with URLs

Usage

# Fetch/refresh all docs (critical + high priority) npx tsx src/cli.ts fetch-docs --priority high # Fetch only critical docs (fastest) npx tsx src/cli.ts fetch-docs --priority critical # Search the index npx tsx src/cli.ts search "otel configuration"

Key Sources by Topic

Topic

Surface

Section

OTel / Monitoring

code.claude.com

monitoring-usage

Cost Management

code.claude.com

costs, analytics

Agent SDK (TS)

platform.claude.com

agent-sdk/typescript

Subagents

platform.claude.com

agent-sdk/subagents

Skills in SDK

platform.claude.com

agent-sdk/skills

Hooks

platform.claude.com

agent-sdk/hooks

Auth / Secrets

code.claude.com

authentication

MCP Servers

code.claude.com

mcp

Changelog

code.claude.com

changelog

Analytics API

docs.anthropic.com

api/claude-code-analytics-api

Important Gotchas

OTel events use LOGS protocol, not metrics — you need OTEL_LOGS_EXPORTER=otlp

DISABLE_TELEMETRY ≠ CLAUDE_CODE_ENABLE_TELEMETRY — the former is Statsig internal, the latter is user OTel

Skills are filesystem-only — the SDK has no programmatic API for registering skills, only settingSources

Agent tool was renamed from Task — check both names for SDK compatibility

V2 SDK is unstable preview — use unstable_v2_createSession prefix

Doc Fetcher Skill

Fetches and indexes official Anthropic documentation from three surfaces:

code.claude.com — Claude Code CLI, skills, plugins, hooks, monitoring
platform.claude.com — Agent SDK, custom tools, subagents, permissions
docs.anthropic.com — Messages API, analytics API, usage & cost API

Process

Check local cache at ~/.claude/knowledge/knowledge-index.json
If stale (>24h) or missing, fetch fresh docs using the fetcher script
Search the index for entries matching the user's question
Inject relevant doc content into context for answering
Cite sources with URLs

Usage

# Fetch/refresh all docs (critical + high priority)
npx tsx src/cli.ts fetch-docs --priority high

# Fetch only critical docs (fastest)
npx tsx src/cli.ts fetch-docs --priority critical

# Search the index
npx tsx src/cli.ts search "otel configuration"

Key Sources by Topic

Topic	Surface	Section
OTel / Monitoring	code.claude.com	monitoring-usage
Cost Management	code.claude.com	costs, analytics
Agent SDK (TS)	platform.claude.com	agent-sdk/typescript
Subagents	platform.claude.com	agent-sdk/subagents
Skills in SDK	platform.claude.com	agent-sdk/skills
Hooks	platform.claude.com	agent-sdk/hooks
Auth / Secrets	code.claude.com	authentication
MCP Servers	code.claude.com	mcp
Changelog	code.claude.com	changelog
Analytics API	docs.anthropic.com	api/claude-code-analytics-api

Important Gotchas

OTel events use LOGS protocol, not metrics — you need OTEL_LOGS_EXPORTER=otlp
DISABLE_TELEMETRY ≠ CLAUDE_CODE_ENABLE_TELEMETRY — the former is Statsig internal, the latter is user OTel
Skills are filesystem-only — the SDK has no programmatic API for registering skills, only settingSources
Agent tool was renamed from Task — check both names for SDK compatibility
V2 SDK is unstable preview — use unstable_v2_createSession prefix