context7
Context7 Platform -- Up-to-date code documentation for LLMs and AI code editors
The context7 MCP server delivers current, version-specific library documentation and code examples directly into AI coding assistants. Developed by Upstash, it solves the problem of LLMs generating outdated code by fetching fresh documentation from source repositories in real-time. The server exposes tools to resolve library identifiers and query documentation for any supported framework or package. Developers can integrate it into Cursor, Claude Desktop, and other MCP-compatible clients to eliminate hallucinated APIs and outdated training data.
Key Features
Use Cases
- 01Generating Next.js middleware with current API syntax instead of deprecated patterns
- 02Configuring Cloudflare Workers with up-to-date runtime APIs and best practices
- 03Implementing Supabase authentication flows using the latest SDK methods
- 04Retrieving MongoDB driver documentation for specific version constraints in a project
- 05Building API integrations with accurate, non-hallucinated endpoint specifications
- 06Learning new framework features introduced after an LLM's training cutoff date
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context7 — FAQ
What is the context7 MCP server?+
The context7 MCP server is a Model Context Protocol integration that provides AI coding assistants with real-time access to current library documentation and code examples. It prevents outdated or hallucinated code generation by fetching version-specific documentation directly from source repositories.
How do I install context7 in Cursor or Claude Desktop?+
Run 'npx ctx7 setup' in your terminal and follow the prompts to authenticate and configure your AI client. The CLI will automatically add the appropriate MCP server configuration or skill definition. For manual setup, add the server URL https://mcp.context7.com/mcp to your MCP client configuration with your API key in the Authorization header.
Which AI coding assistants work with context7?+
Context7 works with any MCP-compatible client including Cursor, Claude Desktop, Claude Code, Cline, RooCode, and 30+ other agents. The ctx7 CLI supports automatic configuration for Cursor, Claude, and OpenCode.
Do I need an API key to use context7?+
An API key is recommended for higher rate limits but not strictly required. You can obtain a free API key at context7.com/dashboard, and the 'npx ctx7 setup' command handles authentication automatically via OAuth.
Is context7 free to use?+
Yes, context7 is free to use with rate limits. A free API key provides higher limits, and the MCP server package is MIT licensed and open source.
What are the prerequisites for running context7?+
You need Node.js 18 or newer to run the ctx7 CLI and an MCP-compatible AI coding assistant. No other dependencies are required for basic usage.
How do I install context7?+
Open the source repository on GitHub and follow its README. context7 is a mcp server — MCP Agents Market links you directly to the official repo.
Is context7 free?+
context7 is an open-source project hosted on GitHub. Check the repository for its license and any usage requirements.