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-engine instructions from the published Rails Agent Skills tile.",
"type": "weighted_checklist",
"checklist": [
{
"name": "instruction-1",
"description": "The submitted artifact follows this skill instruction: Use this skill when the task is to create, scaffold, or refactor a Rails engine.",
"max_score": 13
},
{
"name": "instruction-2",
"description": "The submitted artifact follows this skill instruction: A good engine has a narrow purpose, a clear host-app integration story, and a small public API. Keep this skill focused on structure and design. Use adjacent skills for installer details, deep test coverage, release workflow, or documentation work.",
"max_score": 13
},
{
"name": "instruction-3",
"description": "The submitted artifact follows this skill instruction: Dummy app exists: `ls spec/dummy` or `ls test/dummy` should return the app directory.",
"max_score": 13
},
{
"name": "instruction-4",
"description": "The submitted artifact follows this skill instruction: Create the minimal engine structure. **Checkpoint:** `bundle exec rake` inside the engine must pass.",
"max_score": 13
},
{
"name": "instruction-5",
"description": "The submitted artifact follows this skill instruction: Use a structure close to this:",
"max_score": 12
},
{
"name": "instruction-6",
"description": "The submitted artifact follows this skill instruction: **What the host app must add:** mount route, initializer, migrations, credentials, background jobs, or assets.",
"max_score": 12
},
{
"name": "instruction-7",
"description": "The submitted artifact follows this skill instruction: Prefer one explicit configuration surface, for example:",
"max_score": 12
},
{
"name": "instruction-8",
"description": "The submitted artifact follows this skill instruction: **Structure** — Use idiomatic Rails engine patterns and include the recommended `lib/`, `app/`, `config/`, `db/`, and `spec/dummy` or `test/dummy` shape.",
"max_score": 12
}
]
}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