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Found 2,137 Skills
Bootstrap new projects with strong typing, linting, formatting, and testing. Supports Python, TypeScript, and other languages with research fallback.
Headless browser automation using Playwright CLI. Use when you need headless browsing, parallel browser sessions, UI testing, screenshots, web scraping, or browser automation that can run in the background. Keywords - playwright, headless, browser, test, screenshot, scrape, parallel.
Type-safe, file-based router for React with first-class search params, data loading, and code splitting. Use when user asks to "create routes with TanStack Router", "set up file-based routing", "add search params", "use loaders", "protect routes with auth", "add code splitting", or asks about @tanstack/react-router, createFileRoute, createRouter, routeTree.gen.ts, useSearch, useParams, useNavigate, useBlocker, useMatch, useRouterState, beforeLoad, or route configuration. Do NOT use for TanStack Start server functions, Next.js App Router, React Router (without migration context), or Remix routing. Covers routing setup, navigation, search/path params, data loading, authentication, code splitting, SSR, error handling, testing, deployment, and bundler configuration (Vite, Webpack, Rspack, esbuild).
Captures screenshots at multiple viewport breakpoints for responsive design validation and documentation. Use when you need to test responsive layouts, validate mobile/tablet/desktop views, document design system breakpoints, or create visual regression test baselines. Triggers on "test responsive design", "screenshot at breakpoints", "capture mobile and desktop views", "responsive design testing", or "multi-device screenshots". Works with Playwright MCP tools (browser_navigate, browser_resize, browser_take_screenshot).
Provides reflective questioning framework to challenge assumptions about work completeness, catching incomplete implementations before they're marked "done". Use before claiming features complete, before moving ADRs to completed status, during self-review, or when declaring work finished. Triggers on "is this really done", "self-review my work", "challenge my assumptions", "verify completeness", or proactively before marking tasks complete. Works with any type of implementation work. Enforces critical thinking about integration, testing, and execution proof.
Configures comprehensive testing in Gradle including JUnit 5, TestContainers, test separation (unit vs integration), and code coverage with JaCoCo. Use when asked to "set up JUnit 5", "configure TestContainers", "separate integration tests", or "add code coverage". Works with build.gradle.kts, test source sets, and CI/CD configurations.
Implements Google Cloud Pub/Sub integration in Python by configuring topics, subscriptions, publishing/subscribing, dead letter queues, and local emulator setup. Use when building event-driven architectures, implementing message queuing, or managing high-throughput systems. Triggers on "setup Pub/Sub", "publish messages", "create subscription", "configure DLQ", or "test with emulator". Works with google-cloud-pubsub library and includes reliability, idempotency, and testing patterns.
Comprehensive Ruby on Rails v8.1 development guide with detailed documentation for Active Record, controllers, views, routing, testing, jobs, mailers, and more. Use when working on Rails applications, building Rails features, debugging Rails code, writing migrations, setting up associations, configuring Rails apps, or answering questions about Rails best practices and patterns.
HTTP API testing for TypeScript (Supertest) and Python (httpx, pytest). Covers REST APIs, GraphQL, request/response validation, authentication, and error handling. Use when user mentions API testing, Supertest, httpx, REST testing, endpoint testing, HTTP response validation, or testing API routes.
Form request validation and comprehensive validation testing. Use when working with validation rules, form requests, validation testing, or when user mentions validation, form requests, validation rules, conditional validation, validation testing.
Manual QA testing — verify features end-to-end as a user would, using every tool available (browser, macOS, bash, APIs). Focuses on what formal test suites cannot capture: visual correctness, UX flows, usability judgment, integration reality, edge cases, and failure modes. Standalone or composable with /ship. Triggers: qa, qa test, manual test, test the feature, verify it works, exploratory testing, smoke test, end-to-end verification.
Get best practices for NUnit unit testing, including data-driven tests