Bundler MCP: MCP server, setup and security

What Bundler MCP does

According to its repository: “Query local information about dependencies in a Ruby project's Gemfile.”

An MCP server gives an AI agent extra tools it calls during the conversation: the agent reads their description, decides to use them and gets the result back. Bundler MCP is listed under Data science and visualization, a category of 48 servers in the directory, where it ranks #34 by stars.

Topics declared by the repository: bundler, ruby.

Installing and connecting Bundler MCP

No package or remote server is declared in the official MCP registry: you install it from source, following the repository README.

Like any MCP server, you declare it in your client's configuration (Claude Desktop, Claude Code, Cursor, VS Code, Codex…): a name, the command that starts it or its URL, and any environment variables. The client then starts it and lists its tools. Project language: Ruby.

Security: what to check

An MCP server runs code with the rights you give it, and the model reads its tool descriptions: a malicious or compromised server can hijack the agent. Read the code, or pick a maintained and widely used server, before connecting it.

Points found for Bundler MCP:

• Maintenance: no commit for 16 months. Possible flaws and protocol changes are no longer tracked.

Good practice: grant only the rights needed (least privilege), require human approval for irreversible actions, and run the AI agent security check.

Project activity and maintenance

Created on April 18, 2025, the subelsky/bundler_mcp repository has 21 stars and 4 forks, with 0 open issues. It has more stars than 39% of the servers in the directory. Last change 16 months ago.

Stars measure attention, not quality: a recent, heavily promoted project can collect them fast, while a useful but niche server will have few.