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 create-service-object instructions from the published Rails Agent Skills tile.",
"type": "weighted_checklist",
"checklist": [
{
"name": "instruction-1",
"description": "The submitted artifact follows this skill instruction: EVERY service object MUST have its test written and validated BEFORE implementation.",
"max_score": 10
},
{
"name": "instruction-2",
"description": "The submitted artifact follows this skill instruction: Write the spec for .call (with contexts for success, error, edge cases)",
"max_score": 10
},
{
"name": "instruction-3",
"description": "The submitted artifact follows this skill instruction: Run the spec — verify it fails because the service does not exist yet",
"max_score": 10
},
{
"name": "instruction-4",
"description": "The submitted artifact follows this skill instruction: The final artifact must include the spec command and the RED failure message",
"max_score": 10
},
{
"name": "instruction-5",
"description": "The submitted artifact follows this skill instruction: before implementation. Use the observed failure when available; otherwise show",
"max_score": 10
},
{
"name": "instruction-6",
"description": "The submitted artifact follows this skill instruction: **Write Spec (Test-First):** Create the RSpec file at `spec/services/<module_name>/<service_name>_spec.rb`. Write tests covering success and error paths for `.call`. Run it to ensure it fails.",
"max_score": 10
},
{
"name": "instruction-7",
"description": "The submitted artifact follows this skill instruction: **Define Service Skeleton:** Create the file at `app/services/<module_name>/<service_name>.rb` with the correct module namespace.",
"max_score": 10
},
{
"name": "instruction-8",
"description": "The submitted artifact follows this skill instruction: **Handle Errors and Logging:** Catch `StandardError` (and domain exceptions). Use `Rails.logger.error` to log both the message and backtrace. Use UPPER_SNAKE_CASE constants for error messages.",
"max_score": 10
},
{
"name": "instruction-9",
"description": "The submitted artifact follows this skill instruction: **Write Module README:** Generate `app/services/<module_name>/README.md` explaining the domain context.",
"max_score": 10
},
{
"name": "instruction-10",
"description": "The submitted artifact follows this skill instruction: Use no `initialize` and no instance variables for validators, formatters, or helpers that only transform their arguments.",
"max_score": 10
}
]
}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