fetch-library-docs

panaversity's avatarfrom panaversity

Fetches official documentation for external libraries and frameworks (React, Next.js, Prisma, FastAPI, Express, Tailwind, MongoDB, etc.) with 60-90% token savings via content-type filtering. Use this skill when implementing features using library APIs, debugging library-specific errors, troubleshooting configuration issues, installing or setting up frameworks, integrating third-party packages, upgrading between library versions, or looking up correct API patterns and best practices. Triggers automatically during coding work - fetch docs before writing library code to get correct patterns, not after guessing wrong.

⭐15stars🔀9forks📁View on GitHub🕐Updated Jan 2, 2026
[Developer Tools]

When & Why to Use This Skill

This Claude skill provides efficient, high-speed access to official documentation for a wide range of external libraries and frameworks, including React, Next.js, Prisma, and FastAPI. By utilizing advanced content-type filtering, it reduces token consumption by 60-90%, allowing developers to retrieve precise API references, setup guides, and troubleshooting steps without bloating the conversation context. It is an essential tool for ensuring code accuracy and following the latest best practices directly from official sources.

Use Cases

  • Feature Implementation: Retrieve accurate API patterns and code examples for libraries like React or Tailwind CSS to ensure correct syntax and usage before writing code.
  • Error Debugging: Automatically fetch troubleshooting documentation when encountering library-specific errors (e.g., PrismaClientError) to find verified solutions quickly.
  • Framework Setup & Integration: Streamline the installation and configuration of new frameworks or third-party packages by accessing official 'Getting Started' and integration guides.
  • Version Migration: Facilitate seamless upgrades between library versions by pulling official migration paths and identifying breaking changes.
  • Best Practice Research: Look up recommended architectural patterns and optimization techniques for specific frameworks to improve long-term code maintainability.
namefetch-library-docs
descriptionFetches official documentation for external libraries and frameworks (React, Next.js, Prisma, FastAPI, Express, Tailwind, MongoDB, etc.) with 60-90% token savings via content-type filtering. Use this skill when implementing features using library APIs, debugging library-specific errors, troubleshooting configuration issues, installing or setting up frameworks, integrating third-party packages, upgrading between library versions, or looking up correct API patterns and best practices. Triggers automatically during coding work - fetch docs before writing library code to get correct patterns, not after guessing wrong.

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 "<topic>" --content-type <types>

# With library name (auto-resolves)
bash scripts/fetch-docs.sh --library <name> --topic "<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