BundlerMCP
A Model Context Protocol (MCP) server enabling AI agents to query information about dependencies in a Ruby project's Gemfile. Built with fast-mcp.
Installation
Install the gem and add to the application's Gemfile by executing:
bundle add bundler_mcp --group=developmentUsage
- Generate the binstub:
bundle binstubs bundler_mcp- Configure your client to execute the binstub. Here are examples that work for Claude and Cursor:
Basic Example (mcp.json)
{
"mcpServers": {
"bundler-mcp": {
"command": "/Users/mike/my_project/bin/bundler_mcp"
}
}
}Example with logging and explicit Gemfile
{
"mcpServers": {
"bundler-mcp": {
"command": "/Users/mike/my_project/bin/bundler_mcp",
"env": {
"BUNDLER_MCP_LOG_FILE": "/Users/mike/my_project/log/mcp.log",
"BUNDLE_GEMFILE": "/Users/mike/my_project/subdir/Gemfile"
}
}
}
}
