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I've been building Rails-native UI components for two years because nothing like this existed. 32 ViewComponents, all Rails 8, Turbo, and StimulusJS. No React, no external JS dependencies -> https://rapidrails.cc/docs

Recently I started building an agentic layer on top. Give it a clear prompt and it generates a full Rails app, models, migrations, commits, and UI, using the component library. A blog system with authors, posts, and comments takes about 10 seconds. That's faster than rails new.

The demos emulate real prompts I tested in CLI. It's far from perfect, prompt specificity matters a lot right now, but speed, cost, and understanding of Rails conventions are solid.

The goal is something like v0 or Lovable but exclusively for Rails. Built with Rails, for Rails. No outside frontend layer.

Interested in feedback on the approach.