Context7

Up-to-date, version-specific docs for any library, on demand.

Documentation

Stops your AI from hallucinating APIs by feeding it real, version-specific docs on demand.

Context7, by Upstash, pulls current, version-specific documentation and real code examples straight from a library's source and injects them into the model's context. It exists to stop models from answering with outdated or hallucinated APIs, so coding assistants get accurate, up-to-date docs for whatever framework, SDK, or tool you're working with.

Transport: http
Authentication: No auth
Endpoint: https://mcp.context7.com/mcp

Works with no authentication. An optional free Context7 API key (passed as a CONTEXT7_API_KEY header) raises rate limits.

What you can do

Fetch up-to-date, version-specific library docs
Pull real code examples from source
Resolve a library name to its Context7 ID
Query docs by topic for any framework
Target a specific version of a library
Avoid hallucinated or outdated API answers

Try asking

“How do I set up Next.js 15 middleware? use context7”

“Implement basic authentication with Supabase. use context7”

“Show me the current API for the Stripe Node SDK. use context7”

Tools it exposes

A sample of the tools available once connected.

resolve-library-idquery-docs

Set it up

One click adds Context7 to Cursor. Cursor must be installed.

Add to Cursor

Official Context7 MCP docs