Rails Hotwire Driver

Exercise a running local Rails dev server from the shell: authenticate, submit forms, trigger and read Turbo Streams, and read the development log — including OTP/verification codes that Rails prints to the log in development. This is the runtime complement to rails-mcp-server, which only reads code statically.

When this fits (and when it doesn't)

Good fit: ERB + Hotwire apps with minimal JavaScript. The server renders HTML and text/vnd.turbo-stream.html; you are verifying that server-rendered contract.

The core scripts (req.sh, submit_form.rb, readlog.sh, flow.sh) will not execute JavaScript, by design — no Stimulus controllers run, no DOM morphing, no requestSubmit, no ActionCable-broadcast rendering. Don't try to fake JS here.