Context7 MCP Server for VS Code

This VS Code extension registers the Context7 MCP (Model Context Protocol) server with VS Code's built-in MCP support, giving AI assistants real-time access to up-to-date documentation for thousands of libraries and frameworks.

The extension connects to the hosted Context7 server at https://mcp.context7.com/mcp, so it is always running the latest version — no local server process, no manual updates.

Features

• Up-to-date Documentation: Pulls version-specific documentation and code examples straight from the source into your AI assistant's context
• Automatic Library Resolution: Finds the right library documentation based on your query
• Zero Configuration: The server is registered automatically when the extension activates
• Optional API Key: Add a Context7 API key for higher rate limits and access to private repositories

Installation

Install Context7 MCP Server from the Visual Studio Marketplace, or from the Extensions view in VS Code (Upstash.context7-mcp).

Requires VS Code 1.101 or later.

Usage

Once installed, the Context7 MCP server is available to VS Code's AI features (e.g. Copilot Chat in agent mode). Ask questions like:

• "Show me how to use React hooks. use context7"
• "What are the best practices for Next.js routing? use context7"
• "How do I implement authentication with Supabase? use context7"

You can also reference a library directly by its Context7 ID:

Implement basic authentication with Supabase. Use the API and documentation from the /supabase/supabase library.

Tip: Add a rule to your AI assistant's instructions (e.g. .github/copilot-instructions.md) telling it to use Context7 for code generation and library questions, so you don't have to type use context7 every time.

Available Tools

1. resolve-library-id — Resolves a package/product name to a Context7-compatible library ID
2. get-library-docs — Fetches up-to-date documentation for a library

Configuration

Changing the API key stops the running server so the new key can be picked up. Restart it via MCP: List Servers → Context7 → Start Server (or just send a new chat request, which prompts to start it) — no window reload required.

Development

Project Structure

├── src/
│   └── extension.ts          # Main extension code
├── package.json              # Extension manifest
├── tsconfig.json             # TypeScript configuration
├── CHANGELOG.md              # Release notes
├── DEPLOYMENT.md             # Publishing guide
└── README.md                 # This file

Building

npm install     # Install dependencies
npm run compile # Build the extension

Testing

1. Open this repository in VS Code
2. Press F5 to launch the extension in a new Extension Development Host window
3. Run the MCP: List Servers command and confirm "Context7" is listed
4. Open Copilot Chat in agent mode and ask a library question with "use context7"

Contributing

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Test thoroughly
5. Submit a pull request

License

MIT License - see LICENSE file for details.

Acknowledgments

• Context7 for providing the MCP server for real-time documentation access