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Set up Tailwind CSS v4 in Expo with react-native-css and NativeWind v5 for universal styling

Complete guide for building beautiful apps with Expo Router. Covers fundamentals, styling, components, navigation, animations, patterns, and native tabs.

Guidelines for upgrading Expo SDK versions and fixing dependency issues

Helps users discover and install agent skills when they ask questions like "how do I do X", "find a skill for X", "is there a skill that can...", or express interest in extending capabilities. This skill should be used when the user is looking for functionality that might exist as an installable skill.

Build type-safe global state in React with Zustand. Supports TypeScript, persist middleware, devtools, slices pattern, and Next.js SSR with hydration handling. Prevents 6 documented errors. Use when setting up React state, migrating from Redux/Context, or troubleshooting hydration errors, TypeScript inference, infinite render loops, or persist race conditions.

This skill helps you optimize React Native animation performance using Reanimated, worklets, and gesture handlers for buttery 60fps animations.

This skill helps you schedule cross-thread work in React Native using worklets guidelines, improving animation performance and thread safety.

Provides React Native performance optimization guidelines for FPS, TTI, bundle size, memory leaks, re-renders, and animations. Applies to tasks involving Hermes optimization, JS thread blocking, bridge overhead, FlashList, native modules, or debugging jank and frame drops.

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.

Knowledge about the Nostr protocol. Use to view up-to-date NIPs, discover capabilities of the Nostr protocol, and to implement Nostr functionality correctly.

Deploying Expo apps to iOS App Store, Android Play Store, web hosting, and API routes

Use Expo DOM components to run web code in a webview on native and as-is on web. Migrate web code to native incrementally.

Helps understand and write EAS workflow YAML files for Expo projects. Use this skill when the user asks about CI/CD or workflows in an Expo or EAS context, mentions .eas/workflows/, or wants help with EAS build pipelines or deployment automation.

This skill guides using React Native Reanimated shared values with React Compiler by applying get() and set() for compatibility and safety.

Build React Native 0.76+ apps with Expo SDK 52-54. Covers mandatory New Architecture (0.82+/SDK 55+), React 19 changes, SDK 54 breaking changes (expo-av, expo-file-system, Reanimated v4), and Swift iOS template. Prevents 16 documented errors. Use when building Expo apps, migrating to New Architecture, upgrading to SDK 54+, or fixing Fabric, TurboModule, propTypes, expo-updates crashes, or Swift AppDelegate errors.

Guidelines for creating API routes in Expo Router with EAS Hosting

Build and distribute Expo development clients locally or via TestFlight

Use when implementing or debugging ANY network request, API call, or data fetching. Covers fetch API, axios, React Query, SWR, error handling, caching strategies, offline support.

Interact with Nostr protocol using the nak CLI tool. Use to generate Nostr secret keys, encode and decode Nostr identifiers (hex/npub/nsec/nip05/etc), fetch events from relays, sign and publish Nostr events, and more.

Detect exposed secrets, API keys, credentials, and tokens in code. Use before commits, on file saves, or when security is mentioned. Prevents accidental secret exposure. Triggers on file changes, git commits, security checks, .env file modifications.