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NPM MCP

Model Context Protocol server for npm registry

Search packages, check security, compare versions, and validate compatibility. Use it from Cursor AI or Claude Desktop.

Note: This is an unofficial, community-driven MCP server and is not affiliated with or endorsed by npm, Inc.

Features

Auto-Security — AI automatically checks packages before suggesting install (no user action!)
Capabilities Analysis — ESM/CJS, TypeScript, Platform support (Node/Browser/Deno), Build tools
Quick Start Generator — Ready-to-use code examples for any package
Package Comparison — Compare alternatives side-by-side (features, size, popularity)
Bundle Size Analysis — Minified/gzipped sizes, tree-shaking, impact on your bundle
Similar Packages — Find alternatives and similar packages
Search — Find packages with ranking and scores
Details — Versions, dependencies, download stats, deprecation status
Security — Vulnerability check and safe version tips
Compatibility — Peer dependency and version conflicts
Quality — Maintenance and community metrics
Version compare — Breaking changes and semver
NPX check — Validate npx commands before running

No global install. Add to Cursor or Claude config:

Cursor — ~/.cursor/mcp.json:

{
  "mcpServers": {
    "npm-registry-mcp": {
      "command": "npx",
      "args": ["@alisaitteke/npm-mcp"]
    }
  }
}

Claude Desktop — ~/Library/Application Support/Claude/claude_desktop_config.json (macOS):

{
  "mcpServers": {
    "npm-registry-mcp": {
      "command": "npx",
      "args": ["@alisaitteke/npm-mcp"]
    }
  }
}

npm install -g @alisaitteke/npm-mcp

Then use "command": "npm-mcp" (no args) in the config above.

Once the server is connected, you can ask things like:

MIT

_{Ali Sait Teke}
_{Creator & Maintainer}

Thanks to everyone who helps improve this project!