Provides tools for fetching RubyGems metadata, including gem information, searching for gems, retrieving version information, finding reverse dependencies, and looking up ownership details through the RubyGems.org API.
mcp-server-rubygems 
A Model Context Protocol server for fetching rubygems metadata via rubygems.org API.
Tools
This MCP server provides the following tools for interacting with the RubyGems.org API:
Tool | Description |
| Get information about a RubyGem |
| Search for RubyGems matching a query string |
| Get all available versions of a specific RubyGem |
| Get gems that depend on a specific RubyGem |
| Get all RubyGems owned by a specific user or organization |
| Get the owners of a specific RubyGem |
Related MCP server: Poke-MCP
Usage
Install dependencies:
Build the server:
For development with auto-rebuild:
Installation
To use with Claude Desktop, add the server config:
On MacOS: ~/Library/Application Support/Claude/claude_desktop_config.json
On Windows: %APPDATA%/Claude/claude_desktop_config.json
It should be similar on MCP clients like Cursor, Cline, etc -- just add the command from above in your config.
Debugging
Since MCP servers communicate over stdio, debugging can be challenging. We recommend using the MCP Inspector, which is available as a package script:
The Inspector will provide a URL to access debugging tools in your browser.