Unofficial agent skills + reference guide that teach AI coding assistants to write Rails the 37signals way — extracted from Fizzy, Campfire, and DHH's code reviews
This repository also configures its own agents. See what 37signals-skills tells them →
marckohlbrugge/37signals-skills
Skill Claude Code
Review Ruby/Rails code like DHH would - direct, opinionated, allergic to over-engineering. Use when the user runs /dhh or asks for a DHH-style review of a diff, file, or recent changes.
marckohlbrugge/37signals-skills
Skill Claude CodeCodex
Apply core Ruby on Rails best practices for architecture, naming, safety, and maintainability. Use for most Rails coding, refactoring, and code review tasks so baseline standards stay consistent.
marckohlbrugge/37signals-skills
Skill Claude Code
Apply Hotwire, Turbo, Stimulus, and ActionCable best practices for real-time Rails interfaces. Use when building Turbo Streams/Frames, Stimulus interactions, or websocket-driven updates.
marckohlbrugge/37signals-skills
Skill Claude Code
Apply best practices for Rails background jobs using simple orchestration, idempotency, and safe retries. Use when creating, refactoring, or debugging Active Job and queue-backed workflows.
marckohlbrugge/37signals-skills
Skill Claude Code
Write and review Rails database migrations safely, including reversible changes, lock-aware operations, and rollout sequencing. Use when adding or changing schema, indexes, constraints, or backfills.
marckohlbrugge/37signals-skills
Skill Claude Code
Apply Rails security and multi-tenant safety practices including scoped queries, SSRF defenses, rate limiting, and tenant-scoped realtime updates. Use when implementing auth, webhooks, tenant boundaries, or security-sensitive endpoints.
marckohlbrugge/37signals-skills
Skill Claude Code
Apply Rails testing standards with Minitest, fixtures, and pragmatic coverage boundaries. Use when creating tests, reviewing test quality, or improving flaky and slow Rails test suites.
marckohlbrugge/37signals-skills
Skill Claude Code
Build and review Rails webhook systems with safe delivery, retries, observability, and tenant-aware security controls. Use when adding webhook endpoints, outbound deliveries, retry logic, or webhook admin tooling.
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: