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
Example: Reproduce order creation out-of-stock failure
User task: "Creating an order for an out-of-stock product should return a 422 with 'Out of stock', but it currently succeeds or crashes. Create a failing spec that reproduces the bug and produce a minimal fix plan."
Expected triage output (JSON):
{ "title": "Order creation ignores out-of-stock guard", "reproduction_steps": [ "Create product with stock: 0", "POST /orders with quantity: 1", "Observe response status/body and whether an order row was created" ], "failing_command": "bundle exec rspec spec/requests/orders/create_spec.rb", "failing_tests": ["POST /orders when product is out of stock returns 422 with Out of stock"], "minimal_fix_plan": [ "Add the failing request spec before touching implementation", "Update Orders::CreateOrder to guard stock before creating the order", "Return { success: false, error: 'Out of stock' } and no persisted order", "Run the focused request spec, related order specs, and the full suite" ] }
Use the inline request spec skeleton in SKILL.md for the failing test when the bug is visible through POST /orders. Use assets/spec-skeletons/reproduction_spec.rb only for generic service-boundary bugs.
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