ruby-pro

18.3k

sickn33

Write idiomatic Ruby code with metaprogramming, Rails patterns, and performance optimization. Specializes in Ruby on Rails, gem development, and testing frameworks.

DHH Rails Style

9.7k

EveryInc

Use this skill when writing Ruby and Rails code in DHH's distinctive 37signals style. It applies to Ruby code, Rails applications, models, controllers, or any Ruby file. Trigger it for Ruby/Rails code generation, refactoring requests, code review, or when the user mentions DHH, 37signals, Basecamp, HEY, or Campfire style. It embodies REST purity, fat models and thin controllers, Current attributes, Hotwire patterns, and the “clarity over cleverness” philosophy.

andrew-kane-gem-writer

9.7k

EveryInc

This skill should be used when writing Ruby gems following Andrew Kane's proven patterns and philosophy. It applies when creating new Ruby gems, refactoring existing gems, designing gem APIs, or when clean, minimal, production-ready Ruby library code is needed. Triggers on requests like "create a gem", "write a Ruby library", "design a gem API", or mentions of Andrew Kane's style.

dspy-ruby

9.7k

EveryInc

Build type-safe LLM applications with DSPy.rb — Ruby's programmatic prompt framework with signatures, modules, agents, and optimization. Use it when implementing predictable AI features, creating LLM signatures and modules, configuring language model providers, building agent systems with tools, optimizing prompts, or testing LLM-powered functionality in Ruby applications.

ruzzy

3.0k

trailofbits

Ruzzy is a coverage-guided Ruby fuzzer by Trail of Bits. Use for fuzzing pure Ruby code and Ruby C extensions.

constant-time-analysis

3.0k

trailofbits

Detects timing side-channel vulnerabilities in cryptographic code. Use when implementing or reviewing crypto code, encountering division on secrets, secret-dependent branches, or constant-time programming questions in C, C++, Go, Rust, Swift, Java, Kotlin, C#, PHP, JavaScript, TypeScript, Python, or Ruby.

moai-lang-ruby

782

modu-ai

Ruby 3.3+ development specialist covering Rails 7.2, ActiveRecord, Hotwire/Turbo, and modern Ruby patterns. Use when developing Ruby APIs, web applications, or Rails projects.

ast-index

227

defendend

This skill should be used when the user asks to "find a class", "search for symbol", "find usages", "find implementations", "search codebase", "find file", "class hierarchy", "find callers", "module dependencies", "unused dependencies", "project map", "project conventions", "project structure", "what frameworks", "what architecture", "find Perl subs", "Perl exports", "find Python class", "Go struct", "Go interface", "find React component", "find TypeScript interface", "find Rust struct", "find Ruby class", "find C# controller", "find Dart class", "find Flutter widget", "find mixin", "find Scala trait", "find case class", "find object", "find PHP class", "find Laravel model", "find PHP trait", or needs fast code search in Android/Kotlin/Java, iOS/Swift/ObjC, Dart/Flutter, TypeScript/JavaScript, Rust, Ruby, C#, Scala, PHP, Perl, Python, Go, C++, or Protocol Buffers projects. Also triggered by mentions of "ast-index" CLI tool.

global-coding-style

188

aiskillstore

Write clean, consistent code following naming conventions, DRY principles, small focused functions, automated formatting, and meaningful variable names. Use this skill when writing or refactoring any code in any language, naming variables/functions/classes/files, structuring code logic, removing dead code, or ensuring code readability and maintainability. Apply to all programming tasks including Python, JavaScript, TypeScript, Ruby, Java, Go, or any other language files (.py, .js, .ts, .rb, .java, .go) to maintain consistent style, improve code quality, and enhance team collaboration across the entire codebase.

generating-rbs

188

aiskillstore

Generates RBS type signatures from Ruby source files. Triggers when creating type definitions, adding types to Ruby code, or generating .rbs files for classes/modules without existing RBS signatures.

enact-hello-ruby

188

aiskillstore

A simple Ruby greeting tool

setup

163

barefootford

Sets up a Mac for ButterCut. Installs all required dependencies (Homebrew, Ruby, Python, FFmpeg, WhisperX). Use when user says "install buttercut", "set up my mac", "get started", "first time setup", "install dependencies" or "check my installation".

andrew-kane-gem-writer

132

Microck

Write Ruby gems following Andrew Kane's proven patterns and philosophy. Use when creating new Ruby gems, refactoring existing gems, designing gem APIs, or when the user wants clean, minimal, production-ready Ruby library code. Triggers on requests like "create a gem", "write a Ruby library", "design a gem API", or mentions of Andrew Kane's style.

dhh-ruby-style

132

Microck

Write Ruby and Rails code in DHH's distinctive 37signals style. Use this skill when writing Ruby code, Rails applications, creating models, controllers, or any Ruby file. Triggers on Ruby/Rails code generation, refactoring requests, code review, or when the user mentions DHH, 37signals, Basecamp, HEY, or Campfire style. Embodies REST purity, fat models, thin controllers, Current attributes, Hotwire patterns, and the "clarity over cleverness" philosophy.

ruby-oop

98

TheBushidoCollective

Use when working with Ruby's object-oriented programming features including classes, modules, inheritance, mixins, and method visibility.

ruby-blocks-procs-lambdas

98

TheBushidoCollective

Use when working with Ruby blocks, procs, lambdas, and functional programming patterns including closures and higher-order functions.

ruby-gems-bundler

98

TheBushidoCollective

Use when working with Ruby gems, Bundler for dependency management, creating gemspecs, and publishing gems to RubyGems.

ruby-standard-library

98

TheBushidoCollective

Use when working with Ruby's standard library including Enumerable, File I/O, Time/Date, Regular Expressions, and core classes.

ruby-metaprogramming

98

TheBushidoCollective

Use when working with Ruby metaprogramming features including dynamic method definition, method_missing, class_eval, define_method, and reflection.

ruby-rails-application

95

aj-geddes

Develop Ruby on Rails applications with models, controllers, views, Active Record ORM, authentication, and RESTful routes. Use when building Rails applications, managing database relationships, and implementing MVC architecture.

Release Publishing

94

ZPVIP

Publish the gem to Homebrew (GitHub Tap) and RubyGems.org.

ruby-version-manager

87

st0012

Use at session start for Ruby projects (Gemfile, .ruby-version, or .tool-versions present). Detect version manager BEFORE running ruby, bundle, gem, rake, rails, rspec, or any Ruby command.

ruby-resource-map

87

st0012

Use when working in a Ruby project - provides authoritative sources for documentation, typing, and tooling

gem-port

79

mbrock

Port Ruby gems with native C extensions to Fil-C. Use when fixing gem compilation errors, VALUE/int type mismatches, rb_attr/rb_protect issues, or using ast-grep for Ruby C extensions.

ruby-on-rails-best-practices

74

sergiodxa

Ruby on Rails architecture and coding patterns from Basecamp. Use when writing, reviewing, or refactoring Rails code to follow proven conventions for models, controllers, jobs, and concerns. Triggers on tasks involving Rails models, concerns, controllers, background jobs, or Turbo/Hotwire.

sandi-metz-rules

71

nateberkopec

This skill should be used when users request code review, refactoring, or code quality improvements for Ruby codebases. Apply Sandi Metz's four rules for writing maintainable object-oriented code - classes under 100 lines, methods under 5 lines, no more than 4 parameters, and controllers instantiate only one object. Use when users mention "Sandi Metz", "code quality", "refactoring", or when reviewing Ruby code for maintainability.

ruby-flog-flay-setup

71

nateberkopec

Install standardized flog/flay Rake tasks and a pre-commit hook that runs bundle exec rake for Ruby projects. Use when adding or normalizing code complexity and duplication checks.

Ruby on Rails Testing

71

PramodDutta

Rails application testing with RSpec, FactoryBot, Capybara, system tests, request specs, model specs, and Rails-specific testing conventions.

first-class-collection

41

j5ik2o

Supports the design and implementation of the first-class collection pattern. Guides the design of dedicated classes that wrap collections, the aggregation of domain logic, and ensuring immutability. Use when collection operation logic is scattered during code review, new implementation, or refactoring. Target languages: Java, Kotlin, Scala, TypeScript, Python, Ruby, Go, Rust. Triggers: collection-design related requests such as “want to wrap a collection”, “aggregate list logic”, “first-class collection”, “collection operations are scattered”, “convert List<Order> to an Orders class”.

tell-dont-ask (Tell, Don't Ask)

41

j5ik2o

Code review and design assistance based on the “Tell, Don't Ask” principle. Converts patterns that query an object's state and make decisions externally into patterns that command the object to act directly. Strengthens encapsulation and consolidates responsibility in the object that owns the data. Used during code reviews, new implementations, or refactorings when getters are overused or Feature Envy needs to be addressed. Target languages: Java, Kotlin, Scala, TypeScript, Python, Ruby, Go, Rust. Triggers: OOP-design requests such as “reduce getters”, “improve encapsulation”, “fix Feature Envy”, “assign responsibility to the object”, or “Law of Demeter”.

rails-audit-thoughtbot

37

thoughtbot

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 vulnerabilities, code design (skinny controllers, domain models, PORO with ActiveModel), Rails conventions, database optimization, and Ruby best practices. Outputs a detailed markdown audit report grouped by category (Testing, Security, Models, Controllers, Code Design, Views) with severity levels (Critical, High, Medium, Low) within each category.

fly-ssh

36

rubys

Use when asked to run "fly ssh console", SSH into Fly.io machines, inspect files on production machines, check processes on Fly.io, or examine deployed machine state. Covers critical pitfalls like no shell support and Debian vs macOS command differences.

deployment

36

rubys

Deployment architecture, multi-tenancy design, and environment-specific deployment commands. Use when the user asks about how the application is deployed, multi-tenant architecture with Navigator, Fly.io deployment, or frontend stack details.

testing

36

rubys

Information about running tests, test coverage, and known testing issues in the Rails application. Use when the user asks about testing procedures, encounters test failures, wants to know about coverage, or needs to troubleshoot intermittent system test issues.

navigator

36

rubys

Working with the Navigator Go submodule for web server fixes and enhancements. Use when deployment plans require Navigator changes, config parsing issues arise, or new routing/proxy behavior is needed.

render-page

36

rubys

Use this skill to inspect what a Rails page currently displays, extract HTML content, or verify rendering WITHOUT starting a dev server. Useful for understanding page output before making changes, debugging views, searching for content, or testing that pages work correctly. Provides scripts/render.rb for quick page inspection and HTML extraction.

database

36

rubys

Database management commands and the bin/run utility for executing Ruby scripts against specific event databases. Use when the user needs to query, manipulate, or run scripts against existing databases without starting a Rails server.

rspec-testing

34

dgalarza

This skill should be used when writing, reviewing, or improving RSpec tests for Ruby on Rails applications. Use this skill for all testing tasks including model specs, controller specs, system specs, component specs, service specs, and integration tests. The skill provides comprehensive RSpec best practices from Better Specs and thoughtbot guides.

rails

34

aviflombaum

Ruby and Rails best practices following POODR and Refactoring Ruby. Use for Rails development guidance, code quality, dependency injection, small methods, and OOP principles. Triggers on "rails best practice", "poodr", "refactoring", "ruby oop", "code quality".

claude-agent-sdk-ruby

31

ya-luotao

Use when writing or refactoring Ruby code that integrates Claude Code via the claude-agent-sdk gem (ClaudeAgentSDK.query, ClaudeAgentSDK::Client, streaming input, ClaudeAgentOptions configuration including global defaults via ClaudeAgentSDK.configure, tools/permissions, MCP servers, hooks, structured output, budgets, sandboxing, betas/tools presets, control-timeout handling, session resumption/rewind, and Rails patterns like jobs or ActionCable).

claude-agent-ruby

31

ya-luotao

Implement or modify Ruby code that uses the claude-agent-sdk gem, including query() one-shot calls, Client-based interactive sessions, streaming input, option configuration (time limits, budgets, structured output schemas), tools and permissions management, hooks, running and controlling SDK MCP servers, structured output, budgets, sandboxing, session resumption, session browsing (list_sessions/get_session_messages), task lifecycle messages, MCP server control (reconnect/toggle/stop), Rails integration, and error handling.

yard-docs

30

eventaservo

Create YARD documentation for Ruby classes and methods. Use when creating new classes, factories, services, models, or when explicitly asked to add YARD documentation. Triggers on keywords like "YARD", "documentação", "documentation", "criar classe", "novo service", "nova factory".

pcc-check-for-updates

30

palladius

Checks for updates to remote GH site for palladius/gemini-cli-custom-commands. Use Ruby code to check for newer/older version.

sandbox

28

thrashr888

Execute commands in isolated sandboxes for security. Use when running untrusted code, system commands, or operations that could affect the host system. Automatically detects the right runtime (Python, Node, Rust, Go, Ruby, etc.) from the command.

rails-refactorer

27

majesticlabs-dev

Use proactively when refactoring Ruby on Rails code. Applies Rails conventions, Sandi Metz rules, and idiomatic Ruby patterns while maintaining test coverage.

minitest-coder

27

majesticlabs-dev

Write Minitest tests for Ruby and Rails applications. Use when creating test files, writing test cases, or testing new features. Not for RSpec — use rspec-coder instead. Covers both traditional and spec styles, fixtures, mocking, and Rails integration testing patterns.

rspec-coder

27

majesticlabs-dev

Write RSpec tests for Ruby and Rails applications. Use when creating spec files, writing test cases, or testing new features. Not for Minitest — use minitest-coder instead. Covers RSpec syntax, describe/context organization, subject/let patterns, fixtures, mocking with allow/expect, and shoulda matchers.

ruby-coder

27

Majesticlabs Dev Majestic Marketplace Ruby Coder

This skill guides the creation of new Ruby code using modern Ruby 3.x syntax, Sandi Metz’s Four Rules for Developers, and idiomatic Ruby best practices. Use it when creating new Ruby files, writing Ruby methods, or refactoring code to ensure clarity, simplicity, and maintainability.