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
93%
Does it follow best practices?
Impact
96%
1.77xAverage score across 41 eval scenarios
Passed
No known issues
HEURISTICS.mdskills/code-quality/refactor-code/
Refactor Safety Heuristics
Use this file as a review checklist during structural changes.
Common Mistakes
| Mistake | Reality |
|---|---|
| "Quick refactor, no tests needed" | No characterization tests means no safety net. |
| Mixing behavior change with structural change | Mixed intent is hard to validate and review. |
| Renaming many call sites in one commit | Do small batches with tests between batches. |
| Adding abstractions just to match a pattern | Abstractions must serve a real boundary. |
| Deleting old path before proving new path | Keep temporary compatibility until migration is complete. |
Red Flags
- Plan touches many unrelated call sites at once.
- No tests prove current behavior before starting.
- Structural cleanup is mixed with new feature work.
- Old and new paths diverge without migration plan.
- New abstractions exist only for pattern purity.
- More than 3 refactor steps without running tests.
- Language like "should", "probably", "seems to" when claiming test success.
Review Prompts
- What behavior is explicitly declared as stable?
- Which exact tests protect each refactor step?
- What temporary compatibility code exists, and when will it be removed?
- What is the smallest next reversible step?
docs
evals
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mcp_server
skills
api
generate-api-collection
implement-graphql
code-quality
apply-code-conventions
apply-stack-conventions
assets
snippets
code-review
refactor-code
respond-to-review
review-architecture
security-check
context
load-context
setup-environment
ddd
define-domain-language
model-domain
review-domain-boundaries
engines
create-engine
create-engine-installer
document-engine
extract-engine
release-engine
review-engine
test-engine
upgrade-engine
infrastructure
implement-background-job
implement-hotwire
optimize-performance
review-migration
seed-database
version-api
orchestration
skill-router
patterns
create-service-object
implement-calculator-pattern
write-yard-docs
planning
create-prd
generate-tasks
plan-tickets
testing
plan-tests
test-service
triage-bug
write-tests
workflows