RailsCTO

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Overview ​

RailsCTO is an opinionated Claude Code plugin that makes agentic coding assistants behave like senior Rails engineers.

It ships 16 specialized skills, a companion gem, a full quality toolchain, and enforcement hooks — all wired together so that the moment your agent touches a Ruby file, the right conventions kick in automatically. No prompting, no reminders, no "please run RuboCop."

What problem does it solve? ​

AI coding assistants generate code that technically runs but skips the details that make Rails apps maintainable: RuboCop style, RESTful routes, ERB formatting, test coverage, security scanning, proper git hygiene. RailsCTO closes that gap.

Instead of reviewing every change by hand and correcting the same mistakes over and over, you install RailsCTO once and the agent internalizes a senior CTO's standards for every file in the project.

What's in the box ​

  • 16 skills covering Rails engineering, quality, security, and git workflows
  • Mandatory quality gates that run automatically on file changes
  • A companion gem (rails-cto) that scaffolds the entire toolchain with one command
  • Config templates for RuboCop, Reek, bundler-audit, Brakeman, and Herb
  • A SimpleCov patch that wires coverage reporting into your test helper
  • A CLAUDE.md block that routes every session through the mandatory skills

Who it's for ​

  • Rails developers using Claude Code (today) who want quality that matches their own standards without babysitting the agent
  • Teams that need a consistent bar for Rails code regardless of who — or what — is writing it
  • Projects on Rails 7+ that follow Omakase conventions (rubocop-rails-omakase, Minitest::Spec, Hotwire)

Current status ​

RailsCTO is a Claude Code plugin today. The skills use Claude Code's plugin system and marketplace. Support for additional agentic coding assistants is on the roadmap.

Next steps ​

Released under the MIT License.

Copyright © 2026 Matt Sears