Frontend

Expert UI/UX design guidance for evaluating, building, or updating user interfaces. Applies typography principles (hierarchy, readability, interactivity), visual design patterns, and Shift Nudge best practices. Use when designing screens, reviewing layouts, styling components, or improving UX. Use this skill if prompted with "design" or "ux".

Patterns for creating components that return VirtualNode data structures. Covers component structure, Props types, HTML wrappers vs custom components, CSS organization, and testing. Use when creating UI components. Includes script for generating component scaffold.

This skill should be used when the user wants to monitor a website for changes, availability, or specific conditions. Use this skill for tasks like tracking product stock, monitoring appointment slots, watching for event tickets, checking restaurant reservations, or any scenario requiring automated periodic web checks with pattern analytics. The skill creates a complete monitoring system with Playwright bot, cron scheduling, analytics dashboard, and smart notifications.

Use this skill for Next.js App Router patterns, Server Components, Server Actions, Cache Components, and framework-level optimizations. Covers Next.js 16 breaking changes including async params, proxy.ts migration, Cache Components with "use cache", and React 19.2 integration. For deploying to Cloudflare Workers, use the cloudflare-nextjs skill instead. This skill is deployment-agnostic and works with Vercel, AWS, self-hosted, or any platform.Keywords: Next.js 16, Next.js App Router, Next.js Pages Router, Server Components, React Server Components, Server Actions, Cache Components, use cache, Next.js 16 breaking changes, async params nextjs, proxy.ts migration, React 19.2, Next.js metadata, Next.js SEO, generateMetadata, static generation, dynamic rendering, streaming SSR, Suspense, parallel routes, intercepting routes, route groups, Next.js middleware, Next.js API routes, Route Handlers, revalidatePath, revalidateTag, next/navigation, useSearchParams, turbopack, next.config

Create new modules for the Providr Provider Portal using Metronic Tailwind React theme, Shadcn UI, and KeenIcons. Use when building new features, pages, or modules that follow the established patterns, or when the user asks to create a module using Metronic conventions.

Interactive wizard for creating custom Claude Code skills. Use when the user wants to create a new skill, write a skill, build a custom capability, or asks how to make a skill. Guides through requirements, validation, and best practices. Triggers on "create skill", "help me write a skill", "make a skill".

Standard Operating Procedure for /init-project phase. Guide one-time project setup with interactive questionnaire, brownfield codebase scanning, 8-document generation (overview, architecture, tech-stack, data, API, capacity, deployment, workflow), and cross-document consistency validation. Auto-trigger when user runs /init-project or mentions 'project setup', 'architecture documentation', or 'greenfield/brownfield initialization'.

Type-safe SQL ORM for TypeScript with zero runtime overhead. Use when building database layers requiring compile-time safety, minimal bundle size, or superior performance over Prisma. Supports PostgreSQL, MySQL, SQLite with native SQL generation, relational queries, and migration management via Drizzle Kit.

Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, or applications. Generates creative, polished code that avoids generic AI aesthetics.

Interactive maps and geospatial visualizations for Composable Svelte. Use when implementing maps, geolocation, markers, overlays, or geospatial data visualization. Covers Map component, markers, popups, GeoJSON layers, heatmaps, tile providers, viewport controls from @composable-svelte/maps package built with Maplibre GL.

Remember: Claude is capable of extraordinary creative work. Don't hold back, show what can truly be created when thinking outside the box and committing fully to a distinctive vision.

Build content-focused websites with Astro. Use when creating .astro files, working with content collections, configuring islands architecture, or deploying to Cloudflare/DigitalOcean.

Design mobile-first responsive layouts using fluid containers, relative units, standard breakpoints, and touch-friendly interfaces that adapt seamlessly across devices from mobile to desktop. Use this skill when implementing responsive designs, media queries, viewport configurations, or testing across screen sizes. Applies to any frontend layout work requiring optimization for mobile phones, tablets, and desktop displays with readable typography and appropriate content prioritization.

Provides robust patterns and reusable components for handling forms in React. Use this skill when building forms that require validation, error handling, multi-step flows, file uploads, or complex submission logic. It covers libraries like React Hook Form, Zod, and Yup, offering templates and best practices for creating performant and user-friendly forms.

フロントエンド（TypeScript/Svelte 5/Vitest）のテスト実装とデバッグを行います。テストの作成、テストの実行、テストエラーの修正、Svelte 5 コンポーネントのテスト、国際化対応のモックなどのテスト関連タスクに使用します。

Supabase CMS integration patterns, schema design, RLS policies, and content management for Astro websites. Use when building CMS systems, setting up Supabase backends, creating content schemas, implementing RLS security, or when user mentions Supabase CMS, headless CMS, content management, database schemas, or Row Level Security.

Senior Staff Engineer guidance for Clean Architecture, SOLID principles, and Domain-Driven Design. Use for refactoring or planning new modules.

Use when designing animations for educational platforms, e-learning, tutoring apps, or skill-building experiences

Teaches testing custom hooks in React 19 using renderHook from React Testing Library. Use when testing custom hooks or hook behavior.

Implements Turso edge SQLite database with libSQL client, embedded replicas, and vector search. Use when building edge-first apps, implementing embedded databases, or needing SQLite with global replication.