Use when implementing any feature or bugfix, before writing implementation code - write the test first, watch it...

Use when writing or changing tests, adding mocks, or tempted to add test-only methods to production code - prevents...

Automatically generates comprehensive test suites (unit, integration, E2E) based on code and past testing patterns....

Prevent request timeouts in Claude Code sessions by chunking long operations, implementing progress checkpoints,...

Create beautiful, accessible user interfaces with shadcn/ui components (built on Radix UI + Tailwind), Tailwind CSS...

Use when starting feature work that needs isolation from current workspace or before executing implementation plans...

Use when starting any conversation - establishes mandatory workflows for finding and using skills, including using...

Generate web assets including favicons, app icons (PWA), and social media meta images (Open Graph) for Facebook,...

Build modern full-stack web applications with Next.js (App Router, Server Components, RSC, PPR, SSR, SSG, ISR),...

Expert guidance for Windows, PowerShell, WSL interop, and cross-platform development

Use when design is complete and you need detailed implementation tasks for engineers with zero codebase context -...

Download videos, audio, playlists, and channels from YouTube and 1000+ websites using yt-dlp. Supports quality...

Deno Deploy platform and CLI commands - deploying apps, --tunnel flag for local development with hosted...

Expert-level Deno knowledge for code review, debugging, and best practice enforcement. Use when reviewing Deno code...