Context7

What it does

Pulls up-to-date, version-specific library documentation and code examples into your prompt, so the AI stops relying on outdated training data or made-up APIs.

Who it's for

Anyone coding with AI on fast-moving frameworks (Next.js, React, Supabase, etc.).

How to set it up

1. Quickest (needs Node.js 22.13+). It signs you in with OAuth, creates an API key and configures Cursor, Claude Code or OpenCode (--cursor / --claude / --opencode):

   bashCopy

   npx ctx7 setup

2. Manual: add the remote MCP server and pass your API key as a Bearer header. Free keys are at context7.com/dashboard.

   jsonCopy

   {
     "mcpServers": {
       "context7": {
         "url": "https://mcp.context7.com/mcp",
         "headers": {
           "Authorization": "Bearer YOUR_API_KEY"
         }
       }
     }
   }

3. Add 'use context7' to a prompt (or add a rule telling your agent to always use it) to pull in fresh docs.

Check the official docs for the latest steps.

Example prompts

Create a Next.js proxy that checks for a valid JWT in cookies and redirects unauthenticated users to /login. use context7

Show me the Supabase auth API for email/password sign-up. use context7

Implement basic authentication with Supabase. use library /supabase/supabase for API and docs.

Demo