Frontend & Design for Claude Code

Audit and improve accessibility in Svelte/SvelteKit applications, ensuring WCAG compliance and inclusive user experiences.

Create new Svelte components with best practices, TypeScript support, and testing

Optimize Svelte/SvelteKit applications for performance, including bundle size reduction, rendering optimization, and loading performance.

General-purpose Storybook assistance for SvelteKit projects, including setup guidance, best practices, and common tasks.

/svelte:storybook-mock

/svelte:storybook-setup

/svelte:storybook-story

Build full-stack web applications with SvelteKit — file-based routing, SSR, SSG, API routes, and form actions in one framework.

Use this agent when building native iOS, macOS, or server-side Swift applications requiring advanced concurrency patterns, protocol-oriented architecture, and Swift-specific optimizations. Invoke for SwiftUI modernization, async/await implementation, actor-based state management, or memory safety concerns. Specifically:\\n\\n<example>\\nContext: An iOS team is migrating a UIKit app with outdated concurrency patterns to modern SwiftUI with proper async/await and actor-based state management.\\nus

Tailwind CSS v4 principles. CSS-first configuration, container queries, modern patterns, design token architecture.

Expert in building Telegram Mini Apps (TWA) - web apps that run inside Telegram with native-like experience. Covers the TON ecosystem, Telegram Web App API, payments, user authentication, and building viral mini apps that monetize. Use when: telegram mini app, TWA, telegram web app, TON app, mini app.

UI design system toolkit for Senior UI Designer including design token generation, component documentation, responsive design calculations, and developer handoff tools. Use for creating design systems, maintaining visual consistency, and facilitating design-dev collaboration.

Use this agent when designing visual interfaces, creating design systems, building component libraries, or refining user-facing aesthetics requiring expert visual design, interaction patterns, and accessibility considerations. Specifically:\n\n<example>\nContext: Product team needs a complete design system for a new fintech application with dark mode, multiple device sizes, and strict accessibility requirements.\nuser: \"We need to create a comprehensive design system for our fintech app. Includ

Use proactively when reviewing UI/UX design, evaluating visual interfaces, auditing web components for usability issues, checking accessibility compliance, or critiquing design aesthetics. Invoke when the user shares screenshots, mockup files, CSS, HTML, design tokens, or asks for feedback on visual design decisions, font choices, color palettes, layout structure, or user experience. Also use when asked to evaluate AI chat interfaces, copilot UIs, or prompt-driven interface patterns.

Use this agent when you need to conduct user research, analyze user behavior, or generate actionable insights to validate design decisions and uncover user needs. Invoke when you need usability testing, user interviews, survey design, analytics interpretation, persona development, or competitive research to inform product strategy. Specifically:\\n\\n<example>\\nContext: A product team is launching a new feature and needs to understand how users will interact with it before full release.\\nuser:

UX research and design toolkit for Senior UX Designer/Researcher including data-driven persona generation, journey mapping, usability testing frameworks, and research synthesis. Use for user research, persona creation, journey mapping, and design validation.

Set up Vercel Analytics and Speed Insights for React/Vite projects

Optimize and deploy Next.js application to Vercel with performance monitoring

React and Next.js performance optimization guidelines from Vercel Engineering. This skill should be used when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance improvements.

Voice agents represent the frontier of AI interaction - humans speaking naturally with AI systems. The challenge isn't just speech recognition and synthesis, it's achieving natural conversation flow with sub-800ms latency while handling interruptions, background noise, and emotional nuance. This skill covers two architectures: speech-to-speech (OpenAI Realtime API, lowest latency, most natural) and pipeline (STT→LLM→TTS, more control, easier to debug). Key insight: latency is the constraint. Hu

VR/AR development principles. Comfort, interaction, performance requirements.

Use this agent when building Vue 3 applications that require Composition API mastery, reactivity optimization, or Nuxt 3 development with enterprise-scale performance concerns. Specifically:\\n\\n<example>\\nContext: User is building a data-intensive Vue 3 dashboard that needs to display thousands of real-time updates without performance degradation.\\nuser: \"I have a Vue 3 dashboard component that re-renders too frequently when receiving live data. The reactivity system is causing unnecessary

This skill enables visual inspection of websites running locally or remotely to identify and fix design issues. Triggers on requests like "review website design", "check the UI", "fix the layout", "find design problems". Detects issues with responsive design, accessibility, visual consistency, and layout breakage, then performs fixes at the source code level.

Web browser game development principles. Framework selection, WebGPU, optimization, PWA.

Optimize website and web application performance including loading speed, Core Web Vitals, bundle size, caching strategies, and runtime performance

Core Web Vitals optimization specialist. Use PROACTIVELY for improving LCP, FID, CLS, and other web performance metrics to enhance user experience and search rankings.

Use this agent when building Web3 frontend applications and wallet integrations. Specializes in blockchain connectivity, wallet interactions (RainbowKit, Reown, WalletConnect), ethers.js/viem, and dApp development. Examples: <example>Context: User needs to connect wallet to React app user: 'How do I integrate MetaMask and other wallets into my React dApp?' assistant: 'I'll use the web3-integration-specialist agent to set up RainbowKit with comprehensive wallet support and proper error handling'

Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.

Support development of .NET (OOP) WinForms Designer compatible Apps.

Create Zustand stores following established patterns with proper TypeScript types and middleware.

React Native and Expo best practices for building performant mobile apps. Use when building React Native components, optimizing list performance, implementing animations, or working with native modules. Triggers on tasks involving React Native, Expo, mobile performance, or native platform APIs.

Guide for implementing smooth, native-feeling animations using React's View Transition API (`<ViewTransition>` component, `addTransitionType`, and CSS view transition pseudo-elements). Use this skill whenever the user wants to add page transitions, animate route changes, create shared element animations, animate enter/exit of components, animate list reorder, implement directional (forward/back) navigation animations, or integrate view transitions in Next.js. Also use when the user mentions view

Curated upstream: Vercel-Labs React/Next.js skills — performance best practices, composition patterns (compound components, render props), and React Native / Expo conventions for mobile.

Persistent browser and Electron interaction through `js_repl` for fast iterative UI debugging.

Bootstrap, develop, and design modern WinUI 3 desktop applications with C# and the Windows App SDK using official Microsoft guidance, WinUI Gallery patterns, Windows App SDK samples, and CommunityToolkit components. Use when creating a brand new app, preparing a machine for WinUI, reviewing, refactoring, planning, troubleshooting, environment-checking, or setting up WinUI 3 XAML, controls, navigation, windowing, theming, accessibility, responsiveness, performance, deployment, or related Windows

Create job stories using the 'When [situation], I want to [motivation], so I can [outcome]' format with detailed acceptance criteria. Use when writing job stories, creating JTBD-style backlog items, or expressing user situations and motivations.

Run a WCAG 2.1 AA accessibility audit on a design or page. Trigger with "audit accessibility", "check a11y", "is this accessible?", or when reviewing a design for color contrast, keyboard navigation, touch target size, or screen reader behavior before handoff.

Reference skill for Zoom Video SDK. Use after routing to a custom-session workflow when the user needs full control over the video experience rather than an actual Zoom meeting.