This is a comprehensive design system reference that sits between you and actually building UI. Before you write any code, you search its database for product-specific styles, color palettes, font pairings, and UX patterns. It's opinionated about the basics (no emoji icons, use proper SVG sets, watch your light mode contrast) and includes stack-specific guidelines for React, Next.js, Vue, Svelte, SwiftUI, React Native, and Flutter. The workflow is search-heavy: you're expected to query multiple domains (product, style, typography, color, landing, chart, ux) to gather context before implementing. Useful if you want curated defaults instead of inventing everything from scratch, though you'll spend time running Python scripts before touching actual component code.
npx skills add https://github.com/jmerta/codex-skills --skill ui-ux-pro-max