NPM MCP Server

NPM MCP Server

This is a Model Context Protocol (MCP) server that provides functionality to fetch information about npm packages.

Features

1. Package Search: Tool to fetch detailed information about npm packages
2. Popular Packages: Resource to list the 10 most popular npm packages

Installation

Installing via Smithery

To install NPM MCP Server for Claude Desktop automatically via Smithery:

npx -y @smithery/cli install @mateusribeirocampos/npm-mcp-server --client claude

Installing Manually

npm install

Build

npm run build

Running

npm start

For development:

npm run dev

Usage

The server exposes two main functionalities:

1. searchNpmPackage Tool

Fetches detailed information about a specific npm package. The tool returns comprehensive package information including:

• Package name
• Latest version
• Description
• Author information
• Homepage URL
• Repository URL
• Dependencies list

Example usage:

const result = await server.tools.searchNpmPackage({ packageName: "react" });

Example response:

{
  "name": "react",
  "version": "18.2.0",
  "description": "React is a JavaScript library for building user interfaces.",
  "author": "Meta Open Source",
  "homepage": "https://reactjs.org/",
  "repository": {
    "url": "https://github.com/facebook/react.git"
  },
  "dependencies": {
    "loose-envify": "^1.1.0"
  }
}

2. popular-packages Resource

Lists the 10 most popular npm packages, sorted by popularity. Each package in the list includes:

• Package name
• Description
• Current version

Resource URI: npm://popular

Example response:

[
  {
    "name": "lodash",
    "description": "Lodash modular utilities",
    "version": "4.17.21"
  },
  // ... more packages
]

Integration with AI Models

This MCP server can be integrated with AI models to:

1. Get package information before installation
2. Compare different package versions
3. Analyze dependencies
4. Find popular alternatives
5. Get quick package summaries

Technologies

• TypeScript
• Model Context Protocol SDK
• Node-fetch
• Zod