Testing
Unit tests, integration tests, test automation
marketing
by aviflombaum
Marketing funnel modeling and conversion metrics. Use for ad spend analysis, CPM/CPC optimization, landing page conversions, waitlist economics, and funnel modeling. Triggers on "ad spend", "cpm", "cpc", "conversion rate", "landing page", "waitlist", "funnel".
worktree
by aviflombaum
This skill should be used when the user asks to "create a worktree", "new worktree", "worktree for feature", "git worktree", or needs to work on a feature branch in isolation. Handles Rails credential symlinking automatically.
interview
by aviflombaum
Interview about a plan file to refine it through in-depth questioning. Use when you have a plan that needs validation, refinement, or deeper exploration before implementation. Triggers on "interview me about", "refine this plan", "question this spec".
write-test
by aviflombaum
Writes comprehensive RSpec tests for Rails applications. Use when writing model specs, request specs, system specs, job specs, mailer specs, channel specs, or storage specs. Triggers on "write tests for", "add specs to", "test the User model", "create request specs", "write RSpec", "add test coverage".
business
by aviflombaum
SaaS unit economics and growth strategy. Use for LTV, CAC, MRR/ARR analysis, payback period, churn analysis, Rule of 40, and SaaS financial modeling. Triggers on "unit economics", "ltv", "cac", "mrr", "arr", "churn", "saas metrics".
clean-code
by jackjin1997
"Applies principles from Robert C. Martin's 'Clean Code'. Use this skill when writing, reviewing, or refactoring code to ensure high quality, readability, and maintainability. Covers naming, functions, comments, error handling, and class design."
javascript-unit-testing
by el-feo
Writing high-quality unit tests for JavaScript and TypeScript using Jest. Covers test structure (AAA pattern, USE naming), breaking dependencies (stubs, mocks, dependency injection), testing async code (promises, callbacks, timers), avoiding flaky tests, and test-driven development. Use when writing tests, debugging test failures, refactoring tests for maintainability, or questions about Jest, TDD, mocks, stubs, or test best practices.
e2e-tester
by olehsvyrydov
Senior QA Automation Engineer with 10+ years E2E testing experience. Use when writing end-to-end tests for web apps with Playwright, mobile apps with Detox, testing critical user flows, cross-browser testing, or visual regression testing.
ap2
by Tyler-R-Kendrick
Use when implementing the Agent Payments Protocol (AP2) for secure, compliant AI-driven commerce. Covers intent mandates, cart mandates, payment flows, and merchant integration. USE FOR: agent-driven purchases, secure commerce mandates, user-authorized shopping flows, payment credential verification DO NOT USE FOR: API micropayments (use x402), agent communication (use a2a), tool integration (use mcp)
study-habits
by jackjin1997
Build effective study habits with spaced repetition, active recall, and session tracking
ossfuzz
by runkids
OSS-Fuzz provides free continuous fuzzing for open source projects. Use when setting up continuous fuzzing infrastructure or enrolling projects.
china-expert
by sandraschi
Comprehensive China expertise debunking sinophobia, explaining phenomenal 40-year progress, technology leadership, realistic challenges, and optimistic future outlook
simplecov
by el-feo
Comprehensive test coverage analysis and improvement for Ruby and Rails applications using SimpleCov and SimpleCov Console formatter. Automatically runs coverage reports, identifies gaps, suggests tests, and enforces coverage standards. Integrates with RubyCritic for holistic code quality. Use when running tests, analyzing coverage, improving test suites, or setting up coverage tracking in Ruby/Rails projects.
cargo-fuzz
by runkids
cargo-fuzz is the de facto fuzzing tool for Rust projects using Cargo. Use for fuzzing Rust code with libFuzzer backend.
refactor-plan
by helderberto
Create structured refactoring plans. Use when user wants to plan a refactor, needs a refactoring strategy, or mentions breaking down large changes into small commits.
rspec
by el-feo
Comprehensive RSpec testing for Ruby and Rails applications. Covers model specs, request specs, system specs, factories, mocks, and TDD workflow. Automatically triggers on RSpec-related keywords and testing scenarios.
docker-in-docker
by Tyler-R-Kendrick
Use when configuring Docker-in-Docker inside a dev container or Codespace. Covers the DinD feature, Docker Compose, building images, and running containers from within the dev environment. USE FOR: running Docker inside dev containers, DinD feature configuration, building images in Codespaces, Compose inside containers DO NOT USE FOR: general devcontainer.json schema (use devcontainer), sidecar services via Compose (use multi-container-workspaces), production Docker builds (use iac/docker)
kubernetes
by Tyler-R-Kendrick
Use when writing Kubernetes manifests for deploying and managing containerized applications. Covers Deployments, Services, ConfigMaps, Secrets, Ingress, and resource management. USE FOR: Kubernetes manifests, Deployments, Services, Ingress, ConfigMaps, resource management, kubectl DO NOT USE FOR: Helm chart templating (use helm), cloud resource provisioning (use terraform or crossplane), container image builds (use docker)
pr-review
by freenet
Executes comprehensive PR reviews following Freenet standards. Performs four-perspective review covering code-first analysis, testing, skeptical review, and big-picture assessment.
pyproject-toml
by vamseeachanta
Configure Python projects with pyproject.toml for modern packaging, tools, and dependency management
review-ruby-code
by el-feo
Comprehensive Ruby and Rails code review using Sandi Metz rules and SOLID principles. Automatically runs rubycritic and simplecov, analyzes changed files in current branch vs base branch, identifies OOP violations, Rails anti-patterns, security issues, and test coverage gaps. Outputs REVIEW.md with VSCode-compatible file links. Use when reviewing Ruby/Rails code, conducting code reviews, checking for design issues, or when user mentions code review, pull request review, or code quality analysis.
ruzzy
by runkids
Ruzzy is a coverage-guided Ruby fuzzer by Trail of Bits. Use for fuzzing pure Ruby code and Ruby C extensions.
cairo-vulnerability-scanner
by runkids
Scans Cairo/StarkNet smart contracts for 6 critical vulnerabilities including felt252 arithmetic overflow, L1-L2 messaging issues, address conversion problems, and signature replay. Use when auditing StarkNet projects.
dependabot-resolve
by Takazudo
"Comprehensive dependency update workflow for resolving Dependabot alerts and PRs. Use when: (1) User wants to update dependencies, (2) User mentions 'dependabot', 'security vulnerabilities', or 'dependency updates', (3) User asks to run security audit, (4) User wants to create a deps-update PR. Analyzes Dependabot issues, runs security audit (pnpm audit), creates update branch, applies updates, runs quality checks (typecheck, lint, test, build), handles Playwright Docker image sync, and creates PR with full changelog."