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
When to use: New to a project, need to understand the codebase, or setting up development environment.
graph TB
subgraph Context [🔍 Phase 1: Understand]
direction TB
A[New to project] --> B[load-context]
B --> C{Understood?}
C -- No --> B
end
subgraph Setup [⚙️ Phase 2: Setup]
direction TB
C -- Yes --> D[setup-environment]
D --> E{Ready?}
E -- No --> D
end
E -- Yes --> F((Start Development))
%% Styling
style Context fill:#f5f5f5,stroke:#333,stroke-dasharray: 5 5
style Setup fill:#e1f5fe,stroke:#01579b
style C fill:#ffd54f
style E fill:#ffd54f
style F fill:#e8f5e9,stroke:#1b5e20,stroke-width:3pxGoal: Load the minimum context needed before writing code, tests, or PRDs.
What it does:
db/schema.rb — data structureconfig/routes.rb — HTTP surfaceOutput: Context Summary posted before any code proposal.
When to invoke:
Goal: Complete development environment setup.
app/
├── controllers/ # HTTP layer, thin
├── models/ # Domain logic + persistence
├── services/ # Business operations
├── jobs/ # Background processing
├── views/ # ERB/HAML + Hotwire
└── helpers/ # View utilities
config/
├── routes.rb # Routing table
└── initializers/ # Gem configs
spec/ or test/
├── models/ # Unit tests
├── requests/ # Integration tests
├── services/ # Service tests
└── system/ # E2E tests
docs/
├── architecture.md # System design
├── api/ # API documentation
└── workflows/ # This directory# Standard setup
bin/rails db:create
bin/rails db:migrate
bin/rails db:seed
# Test environment
RAILS_ENV=test bin/rails db:create db:migrate
# With Docker
docker-compose up -d db
docker-compose run web bin/rails db:create db:migrate db:seed| Variable | Purpose | Where to define |
|---|---|---|
DATABASE_URL | DB connection | .env / env vars |
REDIS_URL | Cache/Sidekiq | .env |
RAILS_MASTER_KEY | Encrypted credentials | env var only (never in repo) |
AWS_* / S3_* | Storage | credentials.yml.enc |
SENDGRID_* | credentials.yml.enc | |
STRIPE_* | Payments | credentials.yml.enc |
| If you need... | Next skill |
|---|---|
| To plan a feature | create-prd → planning |
| To start coding | plan-tests → development |
| To fix a bug | triage-bug → development#bug-fix |
| To configure CI/CD | (roadmap — setup-ci-cd, see setup) |
DO NOT write implementation code before running load-context.
ALWAYS post the Context Summary and resolve any ambiguities first.| Skill | Description | Trigger words |
|---|---|---|
| load-context | Load context before coding | "load context", "before I code", "match existing style" |
| setup-environment | Dev environment setup | "onboarding", "new dev", "setup project", "Docker" |
docs
evals
scenario-1
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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