262 mods in this category, of every kind an agent can take. Each one carries what it costs per session, what the scan found, and whether it is the original.
Agent Claude Code
Orchestrates incremental refactoring of Rails codebases toward 37signals patterns. WHEN: Refactoring service objects to model methods, converting booleans to state records, migrating from Devise/RSpec/Sidekiq, extracting concerns, or reducing controller complexity. WHEN NOT: Building new features (use…
Agent Claude Code
Reviews code for adherence to 37signals Rails conventions. Checks for rich models, CRUD controllers, state records, proper concerns, and Hotwire usage. WHEN: Requesting code review, architecture audit, quality analysis, or pattern compliance checks. WHEN NOT: Implementing features (use implement-agent), refactoring…
Hook Claude Code
One of 6 in settings.json
Runs after a tool call finishes for Edit and Write tool calls, running an inline shell check (2 commands). From dilolabs/nosia.
Instructions file CodexOpenCode
Instructions for dilolabs/nosia, covering 37signals rails configuration, tech stack, architecture, core philosophy and key commands.
Instructions file
Instructions for sublayerapp/sublayer, covering claude.md, project overview, development commands, setup and testing.
Instructions file
Instructions for st0012/ruby-skills, covering ruby skills - development guide, for claude: when to run tests, project structure, test suite and test 1: basic detection.
Plugin Claude Code
Bundles 3 skills, 1 hook · 132 tokens together
Ruby development skills for Claude Code - version manager detection, authoritative resource map, and test framework reference.
Instructions file CodexOpenCode
AGENTS.md instructions for codebar/planner, covering agents.md, project overview, development workflow, branching strategy and development setup.
Agent Claude Code
Review changes to the Ruby-Go FFI boundary for correctness.
Instructions file CodexOpenCode
AGENTS.md instructions for rubys/roundhouse, covering working on roundhouse (agents & contributors), start here, invariants — do not break these, workflow and the actual goal.
Cursor rule Cursor
Rails Development Rules - The Rails Way with AI Agents.
Instructions file GitHub Copilot
Rails Development Rules -- The Rails Way with AI Agents.
Skill Claude CodeCodex
Analyze Rails application upgrade path. Checks current version, finds latest release, fetches upgrade notes and diffs, then performs selective upgrade preserving local customizations.
Skill Claude CodeCodex
Maintain the Ruby and Rails version matrix tested in CI for a Ruby gem. Use this when you need to remove EOL versions, add the latest supported versions, and update gemfiles and gemspec accordingly. Always use this for requests like 'remove unsupported Ruby/Rails versions', 'add the latest Rails', or 'update the CI…
Skill Claude CodeCodex
Generate streaming, Excel-friendly CSV downloads in Rails with the csb gem. Use when implementing a CSV export/download, writing a .csv.csb template, building CSV via Csb::Builder, or testing column definitions. Not for parsing CSV.
Agent
Expert in designing and implementing RESTful and GraphQL APIs for Rails.
hoblin/claude-ruby-marketplace
Instructions file
Instructions for hoblin/claude-ruby-marketplace, covering claude.md, repository purpose, before editing, directory structure and versioning.
hoblin/claude-ruby-marketplace
Plugin Claude Code
Bundles 1 skill · 180 tokens together
ActiveRecord patterns for Rails models and queries.
Instructions file CodexOpenCode
Instructions for igmarin/rails-agent-skills, covering rails agent skills, tests gate implementation, daily loop, when to load a skill and rails skills.
Instructions file
Instructions for igmarin/rails-agent-skills, a project described as: 28 Rails-specific skills + 9 workflow templates for agentic development.
Instructions file Gemini CLI
Instructions for igmarin/rails-agent-skills, a project described as: 28 Rails-specific skills + 9 workflow templates for agentic development.
Instructions file
Instructions for esparkman/rails-agents, covering claude.md, repository overview, agent architecture, agent file format and agent name.
Skill Claude CodeCodex
Analyze Ruby gem security vulnerabilities, outdated dependencies, and health status with actionable upgrade recommendations.
Instructions file
Claude Code instructions for spaquet/gemtracker, covering gemtracker development guide, project overview, purpose & vision, technology stack and architecture.
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: