Context7

Pulls up-to-date documentation for libraries and frameworks into your AI client, so it stops guessing at outdated APIs. It exposes two tools: resolve-library-id and query-docs. The project's README also offers a guided setup with npx ctx7 setup.

Beginner by Upstash Claude CodeClaude DesktopCursorOpenAI Codex

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Install

Claude Code

claude mcp add context7 -- npx -y @upstash/context7-mcp

Claude Desktop

Add the JSON config below to claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/claude_desktop_config.json, Windows: %APPDATA%\Claude\claude_desktop_config.json), then restart Claude Desktop.

Cursor

Add the JSON config below to .cursor/mcp.json (this project) or ~/.cursor/mcp.json (all projects).

OpenAI Codex

codex mcp add context7 -- npx -y @upstash/context7-mcp

JSON config

{
  "mcpServers": {
    "context7": {
      "command": "npx",
      "args": ["-y", "@upstash/context7-mcp"]
    }
  }
}