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
{
"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
}
]
}docs
evals
scenario-1
scenario-2
scenario-3
scenario-4
scenario-5
scenario-6
scenario-7
scenario-8
scenario-9
scenario-10
scenario-11
scenario-12
scenario-13
scenario-14
scenario-15
scenario-16
scenario-17
scenario-18
scenario-19
scenario-20
scenario-21
scenario-22
scenario-23
scenario-24
scenario-25
scenario-26
scenario-27
scenario-28
scenario-29
scenario-30
scenario-31
scenario-32
scenario-33
scenario-34
scenario-35
scenario-36
scenario-37
scenario-38
scenario-39
scenario-40
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