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_rubygem_info | Get information about a RubyGem |
search_rubygems | Search for RubyGems matching a query string |
get_gem_versions | Get all available versions of a specific RubyGem |
get_gem_reverse_dependencies | Get gems that depend on a specific RubyGem |
get_owner_gems | Get all RubyGems owned by a specific user or organization |
get_gem_owners | Get the owners of a specific RubyGem |
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.
This server cannot be installed
remote-capable server
The server can be hosted and run remotely because it primarily relies on remote services or has no dependency on the local environment.
A Model Context Protocol server that allows interaction with the RubyGems.org API to fetch metadata about Ruby packages, search gems, and explore dependencies and ownership information.
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