Library Documentation Skill Fetches official library documentation with 60-90% token savings. WHEN TO INVOKE (Auto-Detection) INVOKE AUTOMATICALLY when: Context Detection Signal Content Type Implementing About to write code using library API examples,api-ref Debugging Error contains library name (e.g., PrismaClientError ) troubleshooting Installing Adding new package, npm install , setup task setup Integrating Connecting libraries ("use X with Y") examples,setup Upgrading Version migration, breaking changes migration Uncertain First use of library feature, unsure of pattern examples DO NOT INVOKE when: Already have sufficient knowledge from training User pasted docs or has them open Task is about local/private code (use codebase search) Comparing libraries (use web search) DECISION LOGIC 1. Identify Library Priority: User mention → Error message → File imports → package.json → Ask user Examples: PrismaClientKnownRequestError → library = "prisma" import { useState } from 'react' → library = "react" from fastapi import FastAPI → library = "fastapi" 2. Identify Topic Priority: User specifies → Error message → Feature being implemented → "getting started" 3. Select Content Type Task Content Type Implementing code examples,api-ref Debugging error troubleshooting,examples Installing/setup setup Integrating libs examples,setup Upgrading version migration Understanding why concepts Best practices patterns EXECUTION
With known library ID (faster - saves 1 API call)
bash scripts/fetch-docs.sh --library-id < id
--topic "
" --content-type < types
With library name (auto-resolves)
- bash
- scripts/fetch-docs.sh
- --library
- <
- name
- >
- --topic
- "
" - --content-type
- <
- types
- >
- Quick Library IDs
- Library
- ID
- React
- /reactjs/react.dev
- Next.js
- /vercel/next.js
- Prisma
- /prisma/docs
- Tailwind
- /tailwindlabs/tailwindcss.com
- FastAPI
- /tiangolo/fastapi
- See
- references/library-ids.md
- for complete list.
- ERROR HANDLING (Quick Reference)
- Error
- Action
- [LIBRARY_NOT_FOUND]
- Try spelling variations
- [LIBRARY_MISMATCH]
- Use --library-id directly
- [EMPTY_RESULTS]
- Broaden topic or use
- --content-type all
- [RATE_LIMIT_ERROR]
- Check API key setup
- Call Budget
- Context7 allows 3 calls/question. Use --library-id to save 1 call. See references/context7-tools.md for full error handling. REFERENCES Library IDs - Complete library ID list Usage Patterns - Real-world examples Context7 Tools - API details, error codes, setup