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Distinctive, production-grade frontend interfaces that reject generic AI aesthetics. Guides design thinking before coding: establish bold aesthetic direction (brutalist, maximalist, retro-futuristic, luxury, playful, etc.) with clear purpose, tone, and differentiation Emphasizes typography, color theming, motion, spatial composition, and textural details as core design pillars; uses CSS variables, animations, and scroll-triggered effects Generates working, functional code (HTML/CSS/JS, React, Vue) that matches implementation complexity to aesthetic vision: elaborate code for maximalist designs, restrained precision for minimalist ones Explicitly avoids generic patterns: overused fonts (Inter, Roboto), clichéd color schemes (purple gradients), predictable layouts, and cookie-cutter component design

Audit UI code against Vercel's Web Interface Guidelines for design and accessibility compliance. Fetches the latest guidelines from a remote source before each review, ensuring rules stay current Accepts file paths or patterns as arguments; prompts for files if none provided Outputs findings in a terse file:line format for quick scanning and remediation Covers design, accessibility, and UX best practices as defined in the guidelines repository

React composition patterns for scaling components and avoiding boolean prop proliferation. Covers four priority categories: component architecture, state management, implementation patterns, and React 19 APIs, each with specific rules and code examples Includes 10+ named patterns addressing compound components, context providers, state lifting, and explicit variants Designed for refactoring bloated components, building reusable libraries, and reviewing component architecture decisions React 19 specific guidance on removing forwardRef and using use() instead of useContext()

Comprehensive design intelligence for web and mobile UI/UX across 10 technology stacks. Includes 50+ design styles, 161 color palettes, 57 font pairings, and 99 UX guidelines with priority-ranked rules for accessibility, touch interaction, performance, and responsive layout Searchable database with design-system generation that recommends patterns, colors, typography, and effects based on product type and keywords; supports light/dark mode and platform-specific guidance (iOS HIG, Material Design, React Native) Covers 10 stacks (React, Next.js, Vue, Svelte, SwiftUI, React Native, Flutter, Tailwind, shadcn/ui, HTML/CSS) with implementation-specific best practices and performance optimization rules Provides 25 chart types, 161 product type patterns, and pre-built templates for websites, landing pages, dashboards, admin panels, e-commerce, SaaS, portfolios, blogs, and mobile apps with component libraries (buttons, modals, forms, tables, cards, charts)