LocalFree

Package Registry MCP server

mrfentmen/package-registry-mcp

Look up npm and PyPI packages: versions, descriptions, and metadata. No key required.

Source code

Install Package Registry in Claude Code

Claude Code
claude mcp add package-registry -- npx -y @mrfentmen/package-registry-mcp
mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)
{
  "mcpServers": {
    "package-registry": {
      "command": "npx",
      "args": [
        "-y",
        "@mrfentmen/package-registry-mcp"
      ]
    }
  }
}

Frequently asked questions

What does the Package Registry MCP server do?

Look up npm and PyPI packages: versions, descriptions, and metadata. No key required.

Is the Package Registry MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does Package Registry run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Package Registry to Claude Code?

Run: claude mcp add package-registry -- npx -y @mrfentmen/package-registry-mcp

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