What does BundlerMCP do?
It allows AI agents to query Ruby project dependencies from a `Gemfile`, providing gem versions, descriptions, installation paths, and documentation locations.
@subelsky
基本情報
A Model Context Protocol (MCP) server enabling AI agents to query information about gems in a Ruby project's Gemfile, including source code and metadata.
以下の設定を使って、このサーバーを MCP 対応クライアントに追加してください。
{
"mcpServers": {
"bundler_mcp": {
"command": "npx",
"args": [
"@modelcontextprotocol/inspector",
"./bin/bundler_mcp"
]
}
}
}ツール一覧はまだありません
この掲載には表示できるツール一覧がまだありません。サーバーにツールがないという意味ではありません。対応機能はプロジェクトのドキュメントをご確認ください。
上のボタンで一時的なサンドボックスでこのサーバーを実行し、ツール一覧を取得できます。
BundlerMCP is a Model Context Protocol (MCP) server that enables AI agents to query information about dependencies in a Ruby project’s Gemfile. It is built with fast-mcp and is intended for developers using Ruby and Bundler.
Install the gem (bundle add bundler_mcp --group=development), generate the binstub (bundle binstubs bundler_mcp), then configure your MCP client to execute the binstub (e.g., in an mcp.json file). Optionally set BUNDLER_MCP_LOG_FILE for logging or BUNDLE_GEMFILE for a custom Gemfile path.
It allows AI agents to query Ruby project dependencies from a `Gemfile`, providing gem versions, descriptions, installation paths, and documentation locations.
Add the gem to your development group (`bundle add bundler_mcp --group=development`), then generate the binstub (`bundle binstubs bundler_mcp`). Configure your client with the path to the binstub as shown in the Usage section.
The README provides examples for Claude and Cursor using an `mcp.json` file, with the command set to the binstub path. You can also set environment variables like `BUNDLER_MCP_LOG_FILE` and `BUNDLE_GEMFILE`.
Two tools: `list_project_gems` (lists all gems with versions, descriptions, paths, and documentation locations) and `get_gem_details` (retrieves detailed info for a specific gem, including source code file locations).
Use the MCP Inspector: `npx @modelcontextprotocol/inspector ./bin/bundler_mcp`. You can enable logging and specify a custom Gemfile via environment variables.

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