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igmarin/rails-agent-skills

Curated library of 41 public AI agent skills for Ruby on Rails development. Organized by category: planning, testing, code-quality, ddd, engines, infrastructure, api, patterns, context, and orchestration. Covers code review, architecture, security, testing (RSpec), engines, service objects, DDD patterns, and TDD automation. Repository workflows remain documented in GitHub but are intentionally excluded from the Tessl tile.

95

1.77x
Quality

93%

Does it follow best practices?

Impact

96%

1.77x

Average score across 41 eval scenarios

SecuritybySnyk

Passed

No known issues

Overview
Quality
Evals
Security
Files

criteria.jsonevals/scenario-19/

{
  "context": "Checks whether the final artifact follows the plan-tests instructions from the published Rails Agent Skills tile.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "instruction-1",
      "description": "The submitted artifact follows this skill instruction: CHECKPOINT: Test Design Review",
      "max_score": 17
    },
    {
      "name": "instruction-2",
      "description": "The submitted artifact follows this skill instruction: Use this skill when the hardest part of the task is deciding where TDD should start.",
      "max_score": 17
    },
    {
      "name": "instruction-3",
      "description": "The submitted artifact follows this skill instruction: **Pick the smallest strong slice:** Choose the spec type that proves the behavior without dragging in unrelated layers. Do not choose the first spec based on convenience alone — do not start with a lower-level unit if the real risk is request, job, engine, or persistence wiring.",
      "max_score": 17
    },
    {
      "name": "instruction-4",
      "description": "The submitted artifact follows this skill instruction: **Write one failing example:** Keep it minimal; one example is enough to open the gate. Do not include multiple opening examples unless the user explicitly asks for expanded coverage; list additional cases as follow-up coverage instead.",
      "max_score": 17
    },
    {
      "name": "instruction-5",
      "description": "The submitted artifact follows this skill instruction: **Run and validate:** Confirm the failure is because the behavior is missing, not because the setup is broken.",
      "max_score": 16
    },
    {
      "name": "instruction-6",
      "description": "The submitted artifact follows this skill instruction: [assets/first_slice_template.md](assets/first_slice_template.md) — Use when producing a complete first-slice decision artifact with boundary table, one opening example, RED proof, follow-up coverage, and HARD-GATE answers.",
      "max_score": 16
    }
  ]
}

README.md

server.json

tile.json