> browse/registry

> react-hook-form

React Hook Form performance optimization for client-side form validation using useForm, useWatch, useController, and useFieldArray. This skill should be used when building client-side controlled forms with React Hook Form library. This skill does NOT cover React 19 Server Actions, useActionState, or server-side form handling (use react-19 skill for those).

> nuqs

nuqs (type-safe URL query state) best practices for Next.js applications. This skill should be used when writing, reviewing, or refactoring code that uses nuqs for URL state management. Triggers on tasks involving useQueryState, useQueryStates, search params, URL state, query parameters, nuqs parsers, or Next.js routing with state.

> expo

Expo React Native performance optimization guidelines. This skill should be used when writing, reviewing, or refactoring Expo React Native code to ensure optimal performance patterns. Triggers on tasks involving React Native components, navigation, lists, images, animations, bundle optimization, or mobile performance improvements.

> emilkowal-animations

Emil Kowalski's animation best practices for web interfaces. Use when writing, reviewing, or implementing animations in React, CSS, or Framer Motion. Triggers on tasks involving transitions, easing, gestures, toasts, drawers, or motion.

> react-native-elements

React Native Elements UI component library best practices for performance, theming, and proper component usage. Use when building React Native apps with RNE, configuring themes, optimizing lists with ListItem, or reviewing RNE component code.

> ue-game-features

Use this skill when working with Game Feature plugins, modular gameplay, GameFeatureAction, GameFeatureData, GameFrameworkComponentManager, init state system, experience system, modular components, UPawnComponent, UControllerComponent, UGameStateComponent, UPlayerStateComponent, or Lyra-style modular architecture. See references/ for code templates and experience system patterns.

> apollo-client

Guide for building React applications with Apollo Client 4.x. Use this skill when: (1) setting up Apollo Client in a React project, (2) writing GraphQL queries or mutations with hooks, (3) configuring caching or cache policies, (4) managing local state with reactive variables, (5) troubleshooting Apollo Client errors or performance issues.

> zoom-meeting-sdk

Zoom Meeting SDK for embedding Zoom meetings into web, Android, iOS, macOS, Unreal, React Native, Electron, and Linux applications. Use when you want to integrate the full Zoom meeting experience into your app. Supports Web (JavaScript), React Native (iOS/Android), Electron desktop apps, Linux (C++ headless bots), and native platforms.

> zoom-meeting-sdk-web-component-view

Zoom Meeting SDK Web - Component View. Embeddable Zoom meeting components with Promise-based API for flexible integration. Ideal for React/Vue/Angular apps and custom layouts. Uses ZoomMtgEmbedded with async/await patterns and embeddable UI containers.

> zoom-video-sdk

Zoom Video SDK for building custom video experiences (not Zoom meetings) on web, React Native, Flutter, Android, iOS, macOS, Unity, and Linux platforms. Use when you want full control over the video UI and experience.

> zoom-video-sdk-react-native

Zoom Video SDK for React Native. Use when building custom mobile video session experiences with @zoom/react-native-videosdk, event listeners, helper-based APIs, and backend JWT token flows.

> ui-toolkit/web

Zoom Video SDK UI Toolkit - Pre-built React-based video conferencing UI for web applications. Instant video sessions with minimal code - composite UI or individual components.

> react-to-ios

Use React/React Native code as the source of truth and implement the equivalent feature in iOS/Swift. Understands the feature behavior, components, state management, and logic from React, then creates idiomatic iOS code that matches the target codebase's existing patterns. Use when porting features from React/React Native to native iOS or building native alternatives to web components.

> backend-patterns

Backend architecture patterns, API design, database optimization, and server-side best practices for Hono, Cloudflare Workers, and Next.js Route Handlers.

> project-guidelines-example

Example project-specific skill for the Ongize monorepo (Next.js + Cloudflare Workers + Drizzle).

> frontend-patterns

Frontend development patterns for React, Next.js, state management, performance optimization, and UI best practices.

> biome

You are an expert in Biome, the Rust-based toolchain that replaces ESLint and Prettier with a single, fast tool. You help developers configure linting, formatting, and import sorting for JavaScript, TypeScript, JSX, JSON, and CSS — achieving 100x faster execution than ESLint+Prettier with zero configuration, unified diagnostics, and IDE integration.

> react-native-expo

You are an expert in React Native with Expo, the modern framework for building native iOS and Android apps with React. You help developers create mobile applications using Expo Router (file-based navigation), Expo SDK modules (camera, notifications, auth, maps), EAS Build/Submit for cloud builds, over-the-air updates, and the full Expo development workflow — from `npx create-expo-app` to App Store submission.

> shopify

Build and customize Shopify stores — themes with Liquid, Storefront API, custom apps, and headless commerce with Hydrogen. Use when someone asks to "build a Shopify store", "Shopify theme", "Liquid templates", "Shopify API", "Shopify app", "headless Shopify", "Hydrogen storefront", "customize Shopify", "Shopify product management", or "e-commerce with Shopify". Covers Liquid templating, theme development, Storefront/Admin APIs, custom apps, checkout extensions, and Hydrogen (React-based headless

> novu

You are an expert in Novu, the open-source notification infrastructure platform. You help developers build multi-channel notification systems supporting email, SMS, push, in-app, and chat (Slack/Discord) — with workflow orchestration, digest/batching, user preferences, template management, and a pre-built notification center component for React.