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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

characterization_tests.mdskills/code-quality/refactor-code/assets/

Characterization Tests Template

Purpose: Capture current behavior with minimal, focused tests before refactoring.

Template:

  • Identify a small, reproducible behavior (unit or integration)
  • Write a test that asserts current output/state
  • Avoid assertions that encode implementation details; prefer observable outputs

Example (RSpec):

RSpec.describe 'LegacyFormatter', type: :model do it 'returns legacy CSV with expected headers' do input = File.read('spec/fixtures/legacy_input.txt') expect(LegacyFormatter.new(input).to_s.lines.first).to include('ID,Name,Value') end end

Guidelines:

  • Keep tests fast (<100ms ideally)
  • Use real fixtures to capture current behavior
  • Label tests clearly with the behavior they protect
  • Commit tests before refactoring and ensure they fail if behavior changes

skills

code-quality

refactor-code

assets

characterization_tests.md

examples.md

EXAMPLES.md

HEURISTICS.md

INTEGRATION.md

SKILL.md

README.md

tile.json