playwright-browser-resize
To resize the browser window, change viewport size to test responsive layouts.
To resize the browser window, change viewport size to test responsive layouts.
Implements complete dark/light mode theming systems using CSS variables, Tailwind dark mode, React context, and system preference detection. Use when users request "add dark mode", "theme toggle", "dark theme", "light mode switch", or "color scheme".
Use when passing callbacks to custom hooks, fixing react-hooks/exhaustive-deps warnings, or debugging unexpected re-renders in React components.
Production-tested setup for Base UI (@base-ui-components/react) - MUI's unstyled component library that provides accessible, customizable React components using render props pattern. This skill should be used when building accessible UIs with full styling control, migrating from Radix UI, or needing components with Floating UI integration for smart positioning. Use when: Setting up Base UI in Vite + React projects, migrating from Radix UI to Base UI, implementing accessible components (Dialog, Select, Popover, Tooltip, NumberField, Accordion), encountering positioning issues with popups, needing render prop API instead of asChild pattern, building with Tailwind v4 + shadcn/ui, or deploying to Cloudflare Workers. ⚠️ BETA STATUS: Base UI is v1.0.0-beta.4. Stable v1.0 expected Q4 2025. This skill provides workarounds for known beta issues and guidance on API stability. Keywords: base-ui, @base-ui-components/react, mui base ui, unstyled components, accessible components, render props, radix alternative, radix
Expert in React Native, Expo, and cross-platform mobile development
To hover over a page element, trigger hover states such as menus or tooltips.
Production-tested setup for Zustand state management in React applications with TypeScript. This skill provides comprehensive patterns for building scalable, type-safe global state. Use when: setting up global state in React, migrating from Redux or Context API, implementing state persistence with localStorage, configuring TypeScript with Zustand, using slices pattern for modular stores, adding devtools middleware for debugging, handling Next.js SSR hydration, or encountering hydration errors, TypeScript inference issues, or persist middleware problems. Prevents 5 documented issues: Next.js hydration mismatches, TypeScript double parentheses syntax errors, persist middleware export errors, infinite render loops, and slices pattern type inference failures. Keywords: zustand, state management, React state, TypeScript state, persist middleware, devtools, slices pattern, global state, React hooks, create store, useBoundStore, StateCreator, hydration error, text content mismatch, infinite render, localStorage,
Use when creating or modifying React components (.tsx files). Enforces component structure, import order, and hooks patterns.
To fill multiple form fields at once, set values for inputs, checkboxes, and selects in a single call.
SvelteKit data flow guidance. Use for load functions, form actions, and server/client data. Covers +page.server.ts vs +page.ts, serialization, fail(), redirect(), error().
Use this skill when building MCP (Model Context Protocol) servers with FastMCP in Python. FastMCP is a framework for creating servers that expose tools, resources, and prompts to LLMs like Claude. The skill covers server creation, tool/resource definitions, storage backends (memory/disk/Redis/DynamoDB), server lifespans, middleware system (8 built-in types), server composition (import/mount), OAuth Proxy, authentication patterns, icons, OpenAPI integration, client configuration, cloud deployment (FastMCP Cloud), error handling, and production patterns. It prevents 25+ common errors including storage misconfiguration, lifespan issues, middleware order errors, circular imports, module-level server issues, async/await confusion, OAuth security vulnerabilities, and cloud deployment failures. Includes templates for basic servers, storage backends, middleware, server composition, OAuth proxy, API integrations, testing, and self-contained production architectures. Keywords: FastMCP, MCP server Python, Model Context
Production-tested integration patterns for connecting React frontends to Cloudflare Worker backends with Hono, Clerk authentication, and D1 databases. Prevents common frontend-backend connection issues, CORS errors, auth token failures, and race conditions. Use when: connecting frontend to backend, implementing auth flow, setting up API calls, troubleshooting CORS, fixing race conditions, auth tokens not passing, frontend-backend connection errors, 401 errors, integrating Clerk with Workers, setting up full-stack Cloudflare app, vite cloudflare plugin setup. Prevents: CORS errors, 401 Unauthorized, auth token mismatches, race conditions with auth loading, environment variable confusion, frontend calling wrong endpoints, JWT verification errors, D1 connection issues. Keywords: frontend backend integration, Cloudflare Workers, Hono, Clerk auth, JWT verification, CORS, React API client, race conditions, auth loading, connection issues, full-stack integration, vite plugin, @cloudflare/vite-plugin, D1 database,
Expert .NET 10 Full-Stack Developer skill. Use this when implementing new features, vertical slices, or modifying existing logic in the MoreSpeakers application. It covers Domain, Data (EF Core), Managers, and Web (Razor Pages + HTMX).
Install and configure Node.js, npm, and pnpm using nvm. Use when setting up a Node.js environment.
Use when starting a new React Native or Next.js project to establish design system foundation - creates design tokens, folder structure, component architecture, and documentation scaffolding for consistent UI development
Use this skill when building MCP (Model Context Protocol) servers with TypeScript on Cloudflare Workers. This skill provides production-tested patterns for implementing tools, resources, and prompts using the official @modelcontextprotocol/sdk. It prevents 10+ common errors including export syntax issues, schema validation failures, memory leaks from unclosed transports, CORS misconfigurations, and authentication vulnerabilities. This skill should be used when developers need stateless MCP servers for API integrations, external tool exposure, or serverless edge deployments. For stateful agents with WebSockets and persistent storage, consider the Cloudflare Agents SDK instead. Supports multiple authentication methods (API keys, OAuth, Zero Trust), Cloudflare service integrations (D1, KV, R2, Vectorize), and comprehensive testing strategies. Production tested with token savings of ~70% vs manual implementation. Keywords: mcp, model context protocol, typescript mcp, cloudflare workers mcp, mcp server, mcp tools
This skill provides screenplay continuity tracking systems and templates. Covers character registry, timeline registry, location registry, prop registry, and wardrobe registry for maintaining story consistency. Use when: setting up tracking systems, checking consistency, managing timelines, or tracking characters, props, and locations across scenes.
Expert in AR/VR, WebXR, and spatial computing for Vision Pro and web
Generate game assets: character concepts, item icons, ambient music, and preview trailers.