A collection of skills for AI coding agents. Skills are packaged instructions and scripts that extend agent capabilities.

Skills follow the Agent Skills format.

Audits a Vercel project for cost, performance, reliability, caching, function usage, and billing opportunities. It collects Vercel metrics first, then investigates only the routes and files those metrics point to.

Use when:

• Optimizing a deployed Vercel project
• Reducing Vercel costs or function usage
• Investigating slow or expensive routes
• Finding caching, ISR, middleware, image, or build-minute issues
• Producing a ranked cost and performance report

React and Next.js performance optimization guidelines from Vercel Engineering. Contains 40+ rules across 8 categories, prioritized by impact.

Use when:

• Writing new React components or Next.js pages
• Implementing data fetching (client or server-side)
• Reviewing code for performance issues
• Optimizing bundle size or load times

Categories covered:

• Eliminating waterfalls (Critical)
• Bundle size optimization (Critical)
• Server-side performance (High)
• Client-side data fetching (Medium-High)
• Re-render optimization (Medium)
• Rendering performance (Medium)
• JavaScript micro-optimizations (Low-Medium)

Review UI code for compliance with web interface best practices. Audits your code for 100+ rules covering accessibility, performance, and UX.

Use when:

• "Review my UI"
• "Check accessibility"
• "Audit design"
• "Review UX"
• "Check my site against best practices"

Categories covered:

• Accessibility (aria-labels, semantic HTML, keyboard handlers)
• Focus States (visible focus, focus-visible patterns)
• Forms (autocomplete, validation, error handling)
• Animation (prefers-reduced-motion, compositor-friendly transforms)
• Typography (curly quotes, ellipsis, tabular-nums)
• Images (dimensions, lazy loading, alt text)
• Performance (virtualization, layout thrashing, preconnect)
• Navigation & State (URL reflects state, deep-linking)