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Found 1,941 Skills
PHPUnit testing conventions and best practices for any PHP project
Bash scripting workflow for creating production-ready shell scripts with defensive patterns, error handling, and testing.
6 ColdIQ messaging templates - Ask Before Pitch, Not Too Different Persona, Upfront Value, Leverage Content, and Why Are You Paying. Use when creating outreach campaigns, A/B testing message structures, or choosing a messaging approach.
Verify statistics from raw data with methodology checking, significance testing, claim validation, and bias detection. Use when fact-checking statistical claims, validating research findings, or auditing data analysis.
First-principles thinking; identify what everything else builds on. Use when a learner feels like they're memorizing rather than understanding, wants to distinguish foundational from derived concepts, or needs to reconstruct knowledge from basics. This skill guides through dependency testing (elimination, reconstruction, abstraction descent) while enforcing human-only reasoning about what's core vs. derived. Triggers on phrases like "I'm memorizing not understanding", "what's really foundational", "I can use it but don't understand why", "distinguish core from derived", or when a learner wants deeper understanding of first principles.
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).
Designs and implements custom Textual widgets with composition, styling, and lifecycle management. Use when creating reusable widget components, composing widgets from built-in components, implementing widget lifecycle (on_mount, on_unmount), handling widget state, and testing widgets. Covers custom widgets extending Static, Container, and building complex widget hierarchies.
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).
Comprehensive vitest testing patterns covering test structure, AAA pattern, parameterized tests, assertions, mocking, test doubles, error handling, async testing, and performance optimization. Use when writing, reviewing, or refactoring vitest tests, or when user mentions vitest, testing, TDD, test coverage, mocking, assertions, or test files (*.test.ts, *.spec.ts).
Run Firefox mach try commands with pre-configured flags for os-integration testing on Windows and Linux alpha worker pools. Use when testing Firefox changes against Windows 10, Windows 11, Ubuntu 24.04, hardware workers, ARM64, or AMD configurations. Triggers on "os-integration", "mach try", "windows testing", "linux testing", "alpha image".
Hugo template development skill for InfluxData docs-v2. Enforces proper build and runtime testing to catch template errors that build-only validation misses.
Test CLI applications interactively using tmux sessions. Use when testing TUI apps (ratatui dashboard, interactive prompts), verifying CLI command output, testing keyboard navigation, or validating terminal rendering. Launches commands in tmux, waits on conditions (never sleeps), captures frames, sends keypresses, and asserts on output. Specifically designed for gpu-cli but works with any CLI. Use this skill when asked to test, verify, or QA any terminal-based UI or CLI command flow.