context7

name	context7
description	Real-time API documentation lookup via Context7 — query up-to-date docs for any library/framework directly in the context window. No more stale training data or hallucinated APIs. Trigger keywords: API docs, documentation, library docs, 查文档, 最新API, context7, look up docs, fetch documentation, 查库文档, up-to-date API, 实时文档.
metadata	{"category":"tools"}

Context7 — Real-Time Documentation Lookup

Retrieve current documentation for software libraries, frameworks, and components via the Context7 API. Use instead of relying on potentially outdated training data.

Workflow

Step 1: Search for the Library

curl -s "https://context7.com/api/v2/libs/search?libraryName=LIBRARY_NAME&query=TOPIC" | jq '.results[0]'

Parameters:

• libraryName (required): e.g. "react", "nextjs", "fastapi", "axios"
• query (required): topic description for relevance ranking

Response: id (library identifier), title, description, totalSnippets

Step 2: Fetch Documentation

curl -s "https://context7.com/api/v2/context?libraryId=LIBRARY_ID&query=TOPIC&type=txt"

• Use type=txt for readable plain-text output
• No API key required (rate-limited for basic usage)
• Be specific with query to improve relevance

Examples

# React hooks
curl -s "https://context7.com/api/v2/libs/search?libraryName=react&query=hooks" | jq '.results[0].id'
curl -s "https://context7.com/api/v2/context?libraryId=/websites/react_dev_reference&query=useState&type=txt"

# Next.js routing
curl -s "https://context7.com/api/v2/context?libraryId=/vercel/next.js&query=app+router&type=txt"

# FastAPI
curl -s "https://context7.com/api/v2/context?libraryId=/fastapi/fastapi&query=dependency+injection&type=txt"

Tips

• type=txt gives more readable output than JSON
• URL-encode spaces in queries (use + or %20)
• Check additional results if the first isn't correct
• No API key needed for basic usage