Note: the agents/openai.yaml file in this skill is a Codex CLI extension (UI metadata / MCP tool deps). It is ignored by other agents and is not part of the Agent Skills spec.

Expo UI (@expo/ui)

@expo/ui renders real native UI from React: SwiftUI on iOS, Jetpack Compose on Android. Start with its universal components (one tree for iOS, Android, and web) and drop to platform-specific SwiftUI/Jetpack Compose only when the universal layer falls short. It also ships drop-in replacements for migrating off RN community UI libraries.

These instructions track the latest Expo SDK. The universal layer requires SDK 56+. Drop-in replacements and the platform-specific layers also exist on SDK 55. For component details on a specific SDK, refer to the Expo UI docs for that version.

Installation

npx expo install @expo/ui

On SDK 56, @expo/ui works in Expo Go, so npx expo start runs it directly — no custom build required. On older SDKs, build a dev client first (npx expo run:ios / npx expo run:android).

Every @expo/ui tree — universal or platform-specific — must be wrapped in Host.

Choosing an approach (read this first)