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igmarin/rails-agent-skills

Curated library of 28 public AI agent skills for Ruby on Rails development. Organized by category: testing, code-quality, engines, infrastructure, api, and context. 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. Repository agents remain documented in GitHub but are intentionally excluded from the Tessl tile.

93

1.78x
Quality

95%

Does it follow best practices?

Impact

93%

1.78x

Average score across 28 eval scenarios

SecuritybySnyk

Passed

No known issues

Overview
Quality
Evals
Security
Files

criteria.jsonevals/scenario-9/

{
  "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

tile.json