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igmarin/rails-agent-skills

Curated library of 42 public AI agent skills for Ruby on Rails development, plus 5 callable workflow skills. Organized by category: planning, testing, code-quality, ddd, engines, infrastructure, api, patterns, context, orchestration, and workflows. Covers code review, architecture, security, testing (RSpec), engines, service objects, DDD patterns, and TDD automation.

96

Quality

96%

Does it follow best practices?

Impact

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SecuritybySnyk

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Overview
Quality
Evals
Security
Files

EXAMPLES.mdskills/engines/test-engine/

Rails Engine Testing Examples

Executable RSpec examples for common engine testing scenarios.

Request Spec (engine mounted in dummy app)

# spec/requests/my_engine/root_spec.rb
require 'rails_helper'

RSpec.describe 'MyEngine mount', type: :request do
  it 'mounts the engine and returns success for the engine root' do
    get my_engine.root_path
    expect(response).to have_http_status(:ok)
  end
end

Configuration Spec (engine respects host config)

# spec/my_engine/configuration_spec.rb
RSpec.describe MyEngine::Configuration do
  around do |example|
    original = MyEngine.config.widget_count
    MyEngine.config.widget_count = 3
    example.run
    MyEngine.config.widget_count = original
  end

  it 'uses configured value' do
    expect(MyEngine.config.widget_count).to eq(3)
  end
end

Generator Spec (install command, idempotent)

# spec/generators/my_engine/install_generator_spec.rb
require 'rails_helper'
require 'generators/my_engine/install/install_generator'

RSpec.describe MyEngine::Generators::InstallGenerator, type: :generator do
  destination File.expand_path('../tmp', __dir__)

  before { prepare_destination }

  it 'copies the initializer' do
    run_generator
    expect(file('config/initializers/my_engine.rb')).to exist
  end

  it 'is idempotent' do
    2.times { run_generator }
    expect(file('config/initializers/my_engine.rb')).to exist
  end
end

Reload-Safety Spec (decorator survives reload)

# spec/my_engine/reload_safety_spec.rb
RSpec.describe 'MyEngine reload safety' do
  it 'applies decorator after reload without duplication' do
    ActiveSupport::Reloader.to_prepare {}
    expect(User.ancestors).to include(MyEngine::UserDecorator)
    expect(User.ancestors.count(MyEngine::UserDecorator)).to eq(1)
  end
end

skills

engines

test-engine

EXAMPLES.md

SKILL.md

README.md

tile.json