Package Registry MCP Server

Package Registry MCP becomes available to MCP clients through the package registry mcp mcp server. MCP server for searching and getting up-to-date information about NPM, Cargo and NuGet packages.

What Package Registry MCP does

A Model Context Protocol (MCP) server that enables AI assistants and agents (Claude, Cursor, Copilot, etc.) to search package registries and retrieve up-to-date package information.

Key capabilities

• Search NPM packages
• Get detailed NPM package information
• Search crates.io (Rust package registry)
• Get detailed crate information
• Search NuGet packages (.NET package registry)
• Get detailed NuGet package information
• Get detailed PyPI package information (Python package registry)
• Get detailed Go module information (Go package registry)

Tools it exposes

Once connected, the assistant can call this tool directly:

• Cursor — Alternatively, in Cursor, you can configure MCP servers in your settings:

Installing the package registry mcp mcp server

The server is distributed via npm as package-registry-mcp, so most clients can run it without a manual build step. Add it to your MCP client's configuration and restart the client to pick it up — the copy-paste configs for Claude Desktop, Claude Code and Cursor are on this page.

Requirements

• Node.js 18+ or Bun runtime - Internet connection for package registry access

Where it fits

Developer-tool servers are usually the first ones people connect, because they turn "help me with this code" into an assistant that can actually read the repo and act on it. Package Registry MCP sits in that group, and the shape of its toolset — Cursor — tells you what it is really for. Worth comparing against the other developer tools servers in this directory before you commit to one, since several overlap in scope but differ sharply in setup cost and permissions.

Practical notes

• This server runs locally, so it operates with whatever access your machine and its credentials already have. Scope that deliberately rather than by default.
• Maintained by artmann, written in Python.
• MCP clients ask for confirmation before each tool call by default. Keep that on while you learn what the package registry mcp mcp server actually does with your data.
• Every entry in this directory is reviewed by hand before it goes live, and details are checked against the project's own documentation.