rails-agent-kit

https://github.com/afurm/rails-agent-kit

rails-agent-kit is a read-only Model Context Protocol (stdio) server for Rails apps. rails_schema returns tables, columns, indexes and foreign keys parsed statically from db/schema.rb (without booting the app); rails_routes returns every route from `bin/rails routes --expanded`. It also ships a Rails 8 conventions skill for Cursor and Claude Code, installed with `rails-agent-kit install-skills`.