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igmarin/rails-agent-skills

Curated library of 28 atomic skills and 9 personas for Ruby on Rails development. Organized by category: testing, code-quality, engines, infrastructure, api, context, and personas. Covers code review, architecture, security, testing (RSpec), engines, Hotwire, and TDD automation. Shared Ruby skills (YARD docs, DDD, service objects) have moved to ruby-core-skills.

93

1.16x
Quality

95%

Does it follow best practices?

Impact

93%

1.16x

Average score across 28 eval scenarios

SecuritybySnyk

Advisory

Suggest reviewing before use

Overview
Quality
Evals
Security
Files

criteria.jsonevals/scenario-8/

{
  "context": "Checks whether the final artifact follows the create-engine instructions from the published Rails Agent Skills plugin.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "instruction-1",
      "description": "The submitted artifact follows this skill instruction: Use this skill when the task is to create, scaffold, or refactor a Rails engine, Rails plugin, or engine gem.",
      "max_score": 10
    },
    {
      "name": "instruction-2",
      "description": "The submitted artifact follows this skill instruction: A good engine has a narrow purpose, a clear host-app integration story, and a small public API. Keep this skill focused on structure and design. Use adjacent skills for installer details, deep test coverage, release workflow, or documentation work.",
      "max_score": 10
    },
    {
      "name": "instruction-3",
      "description": "The submitted artifact follows this skill instruction: Dummy app exists: `ls spec/dummy` or `ls test/dummy` should return the app directory.",
      "max_score": 10
    },
    {
      "name": "instruction-4",
      "description": "The submitted artifact follows this skill instruction: Define the host-app contract (what the host must provide, what the engine exposes, which extension points are supported). See [reference.md](reference.md) for the full contract template.",
      "max_score": 10
    },
    {
      "name": "instruction-5",
      "description": "The submitted artifact follows this skill instruction: Create the minimal engine structure. **Checkpoint:** `bundle exec rake` inside the engine must pass.",
      "max_score": 10
    },
    {
      "name": "instruction-6",
      "description": "The submitted artifact follows this skill instruction: Write minimum integration coverage through the dummy app. See [TESTING.md](TESTING.md) for coverage requirements.",
      "max_score": 10
    },
    {
      "name": "instruction-7",
      "description": "The submitted artifact follows this skill instruction: When asked to create or scaffold a Rails engine, your output `answer.md` MUST follow this style:",
      "max_score": 10
    },
    {
      "name": "instruction-8",
      "description": "The submitted artifact follows this skill instruction: The concrete recommendation/artifact MUST explicitly display the full generated `.gemspec` file contents and the `Rakefile` contents.",
      "max_score": 10
    },
    {
      "name": "instruction-9",
      "description": "The submitted artifact follows this skill instruction: The files MUST be namespaced correctly under the engine namespace.",
      "max_score": 10
    },
    {
      "name": "instruction-10",
      "description": "The submitted artifact follows this skill instruction: The verification plan MUST explicitly state that running `bundle exec rake` inside the engine passes (exits 0) with a simulated passing output block.",
      "max_score": 10
    }
  ]
}

README.md

tile.json