メニュー
Use when committing code changes in Ruby or Ruby on Rails projects — guides commit message structure, type selection, and body content following Conventional Commits format
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
Rails coding patterns derived from analysis of 37signals' Fizzy codebase. Use when writing Rails code in 37signals/Basecamp style or when asked to follow 37signals patterns. Covers controllers, models, views, Hotwire, testing, database, security, and team philosophy.
Start the local development server in a tmux session and open the homepage. Use when the user wants to start development, run the app locally, fire up the dev server, or invokes /bindev.
Machina design system quick reference. Use when discussing design tokens, surfaces, card backgrounds, depth, elevation, typography tokens, color tokens, DaisyUI theming, or applying visual styling to UI components.
Use when implementation is complete, all tests pass, and you need to decide how to integrate the work - guides completion of development work by presenting structured options for merge, PR, or cleanup
Use when viewing available handoff documents — lists active and archived handoffs with their status, date, topic, and branch
Use when starting a new session and wanting to continue from a previous handoff — reads the latest unrestored handoff document and restores session context
| name | ruby-commit-message |
| description | Use when committing code changes in Ruby or Ruby on Rails projects — guides commit message structure, type selection, and body content following Conventional Commits format |
Write structured commit messages following Conventional Commits. The body should help a junior Ruby on Rails developer understand the change during a debugging session.
<type>(<scope>): <subject>
<body>
<footer>
| Type | Purpose |
|---|---|
feat | New feature |
fix | Bug fix |
refactor | Refactoring (no behavior change) |
perf | Performance improvement |
docs | Documentation only |
test | Test additions or corrections |
build | Build system or dependencies |
ci | CI configuration |
chore | Maintenance tasks |
style | Code formatting (no logic change) |
revert | Revert previous commit |
meta | Repository metadata |
license | License changes |
(api), (auth)Couple of sentences, wrapped at 72 chars, blank line after subject. Write for a junior Ruby developer: simple language they can understand during debugging. Add any useful information that would help a junior Ruby developer understand the impact of the change, why the change was done.
Call out tradeoffs when supported by context. Do not invent details.
Fixes TICKET-123 # or: Fixes #123, Refs TICKET-123
BREAKING CHANGE: ... # for breaking changes; use ! in type too: feat(api)!:
Co-Authored-By: <AI Name> <email> # when AI generated the change
Do NOT add "Generated by AI" or "Written with Claude" in the subject or body. Use only Co-Authored-By.
fix(api): Scope report access to current user
Report.find allowed any authenticated user to view any report by ID.
Querying through current_user.reports makes Rails raise RecordNotFound
(404) if the report doesn't belong to the requester.
feat(alerts): Add Slack thread replies for alert updates
When an alert is updated or resolved, post a reply to the original
Slack thread. This keeps related notifications grouped together.
Refs GH-1234
feat(api)!: Remove deprecated v1 endpoints
Remove all v1 API endpoints deprecated in version 23.1.
Clients should migrate to v2 endpoints.
BREAKING CHANGE: v1 endpoints no longer available
| Mistake | Fix |
|---|---|
| Body explains HOW without context | Only include HOW when it helps debugging |
| Subject describes implementation ("Changed X to Y") | Use imperative: "Fix X", "Add Y" |
| Body repeats what the diff shows | Explain WHY it was changed |
| Subject over 70 characters | Trim scope or rephrase |
| "Generated by AI" in body | Use Co-Authored-By footer only |