Context7 MCP Server

What it does

Injects version-specific library documentation and official code snippets directly into your AI assistant prompt. Prevents agents from generating code with outdated or hallucinated APIs.

Maintained officially by Upstash.

Setup

npx -y @upstash/context7-mcp --api-key YOUR_API_KEY

For Cursor ~/.cursor/mcp.json:

{
  "mcpServers": {
    "context7": {
      "url": "https://mcp.context7.com/mcp",
      "headers": {
        "CONTEXT7_API_KEY": "YOUR_API_KEY"
      }
    }
  }
}

What to watch out for

An API key from the Context7 dashboard is recommended for higher rate limits. Prompting with use context7 helps trigger document resolution reliably.