342 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.
Skill Codex
Build and maintain Ruby or Rails applications with the RubyLLM AI framework. Use for chats, agents, tools, MCP servers, structured output, judgments, evaluations, media generation, transcription, OCR, moderation, embeddings, reranking, tracing, Rails integration, and RubyLLM upgrades; not for contributing to the…
Plugin Claude Code
Track AWS SES bounces, complaints, and delivery stats from Claude Code. Requires a Sessy API key. Does not send email or change SES settings.
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.
Skill Claude Code
Rootstrap Rails conventions. Use when writing, reviewing, or editing any Rails code — controllers, models, migrations, routes, views, mailers, initializers, locale files, or Rails config. Covers routing, ActiveRecord, migrations, i18n, time zones, mailers, assets, Bundler groups, and logging.
Skill Claude Code
Fan out a batch of autopilot-queued issues to parallel background worktree subagents — each runs /autopilot at the build model from its 'model:' label — with a gating review at Opus 5 or above and never below the build (Opus reviews Sonnet and Opus builds, Fable reviews Fable builds).
Skill Claude CodeCodex ✓ vendor
Remediate a send/send call that reaches a private method, restoring a real public seam instead of bypassing visibility. Use when send is being used to invoke private functionality in a class.
thoughtbot/rails-audit-thoughtbot
Skill Claude CodeCodex
Perform comprehensive code audits of Ruby on Rails applications based on thoughtbot best practices. Use this skill when the user requests a code audit, code review, quality assessment, or analysis of a Rails application. The skill analyzes the entire codebase focusing on testing practices (RSpec), security…
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.
Plugin Claude Code
Bundles 1 skill, 1 MCP server · 67 tokens together
Generate HTTP applications, schema handlers and fixtures using Spikard's local CLI and MCP server.
Cursor rule Cursor
Rails Development Rules - The Rails Way with AI Agents.
Skill Claude Code
Manage GitHub stacked pull requests with the official gh stack extension (github/gh-stack). Use for stack creation, viewing, edits, push, submit, sync, rebase, merge, or checkout; when asked to split or isolate work for review; whenever the user mentions a stack, branch layers, dependent PRs, "stacked PR", "PR stack"…
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
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.
Plugin Claude Code
Bundles 12 skills · 508 tokens together
A collection of skills for Rails development and consulting, with an emphasis on learning, communication, and client success.
Skill Claude Code
Harvests offline documentation (README, CHANGELOG, public API) for every gem in a Ruby/Rails project's Gemfile.lock into a local cache, tracks gem versions in a manifest, and refreshes only gems whose version changed. Then reviews a git diff or pull request against that cache to surface (a) gem-upgrade impact …
Skill Claude Code
A setup guide for adding the sgcop Ruby and Rails code-checking rules to a project. RuboCop is a tool that finds style and quality problems in Ruby code.
Skill Claude CodeCodex
Analyze Ruby gem dependencies, vulnerabilities, outdated packages, maintenance health, and insecure gem sources with the gemtracker CLI. Use when asked to audit Ruby gems, check Gemfile.lock security, review dependency health, or run gemtracker.
Skill Claude CodeCodex
Idiomatic ActiveRecord patterns for Ruby on Rails — associations (belongsto/hasmany/hasone/hasmany :through), countercache, polymorphic, STI vs delegatedtype, scopes vs class methods, callbacks vs aftercommit, find vs findby vs where.first, includes vs preload vs eagerload, pluck vs select, exists? vs any?, batch…
Skill Claude CodeCodex
Ruby on Rails security conventions — authentication, authorization, OWASP protections, CSRF, input validation. Use when implementing auth, handling sensitive data, or reviewing security.
Plugin Claude Code
Bundles 1 skill · 159 tokens together
Skill for the Literal gem by Joel Drapper - runtime-checked types, properties, structs, data, value objects, enums, flags, generic collections, results, and serialization.
ombulabs/claude-code_rails-load-defaults-skill
Plugin Claude Code
Bundles 1 skill · 120 tokens together
Align Rails loaddefaults across versions with safe, incremental config changes based on FastRuby.io methodology.
esparkman/claude-rubycritic-skill
Plugin Claude Code
Bundles 1 skill · 68 tokens together
Claude Code Skill for Ruby code quality analysis with RubyCritic. Model-invoked - Claude autonomously analyzes code quality, identifies smells, and provides refactoring insights.
Skill Codex
Rails 8.x application architecture, implementation, and review guidance for production codebases. Use when building or reviewing Ruby on Rails 8 features across models, controllers, routes, Hotwire, jobs, APIs, performance, security, and testing. Trigger for requests mentioning Rails 8, Active Record, Active Job…
Shoebtamboli/rails_claude_skills
Skill Claude CodeCodex
RESTful API controller patterns for Ruby on Rails. Use when: (1) Building JSON APIs, (2) API versioning, (3) Error handling and status codes, (4) Authentication with tokens/JWT, (5) Rate limiting, (6) CORS configuration, (7) Pagination and filtering, (8) API documentation, (9) Testing API endpoints.
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: