girb-mcp (DEPRECATED — renamed to debug-mcp)

This gem has been renamed to debug-mcp. Recent girb-mcp releases on RubyGems are a deprecation shim that depends on debug-mcp and forwards all executables to it. It will receive no further updates.

Migration

Replace girb-mcp with debug-mcp in your Gemfile:

gem "debug-mcp"  # was: gem "girb-mcp"

And in your MCP client config:

{
  "mcpServers": {
    "debug-mcp": {                // was: "girb-mcp"
      "command": "debug-mcp",     // was: "girb-mcp"
      "args": []
    }
  }
}

The executable girb-rails was likewise renamed to debug-rails.

The girb-mcp deprecation shim still works as a transitional step (it execs debug-mcp / debug-rails after printing a deprecation warning), but please migrate to debug-mcp directly.

Why the rename?

The new name better reflects what this gem does: an MCP server for Ruby's debug gem. See the debug-mcp repository for the current source and changelog.