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/planning/generate-tasks/
Rails-First Slice Heuristics
Use the smallest slice that proves behavior at the right boundary:
| Change type | Default first slice |
|---|---|
| New endpoint or controller behavior | Request spec -> controller/service wiring -> persistence/docs |
| New service or domain rule | Service or model spec -> implementation -> callers/docs |
| Background work | Job spec -> service/domain spec if logic is substantial |
| External integration | Client/fetcher layer spec -> builder/domain mapping -> callers |
| Rails engine work | Engine request/routing/generator spec -> engine code -> install/docs |
| Bug fix | Highest-value reproducing spec at the boundary where users feel the bug |
When in doubt, prefer the highest-value failing spec that proves the user-visible behavior before descending into lower-level units.
docs
evals
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scenario-41
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