skills

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핵심 기능

Expo SDK-aware scaffolding
expo-router file-based navigation patterns
EAS Build + Submit config guidance
TypeScript + Zustand defaults
Avoids RN-CLI era advice

라이브 데모

실제 사용 모습

skills-skill-7.replay ▶ 준비됨

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설치

작성자 저장소 · Claude Skills 공식 문서

사용 사례

실전 활용법: skills

Spin up a new Expo app with tabs and auth in one session

👤 Devs starting a new mobile app who want the boring parts done ⏱ ~45 min beginner

언제 쓸까: Day zero of a new project — you want tabs, stack, and a sign-in flow without reading three blog posts.

흐름

Create the app

Use the Expo skill. Start a new app 'TaskFlow' with expo-router, TypeScript, and the tabs template. Include a login screen with email/password.✓ 복사됨

→ npx create-expo-app run, then file structure with app/(tabs)/ and app/(auth)/
Add state

Wire up Zustand for the auth store and persist to SecureStore.✓ 복사됨

→ stores/auth.ts with zustand + persist middleware using expo-secure-store
Test on device

Start the dev server and give me the QR code to scan.✓ 복사됨

→ npx expo start output

결과: A running app on your phone with tabs, auth, and persistence in under an hour.

함정

Claude suggests react-native-cli patterns — Explicitly say 'Expo SDK, expo-router only' in prompts

함께 쓰기: filesystem

Configure EAS Build for iOS and Android

👤 Teams ready to ship TestFlight / Play internal ⏱ ~30 min intermediate

언제 쓸까: First time submitting to TestFlight/Play.

흐름

Generate eas.json

Use the Expo skill. Generate eas.json with preview (internal) and production profiles, correct bundle identifier patterns, and env var injection.✓ 복사됨

→ Valid eas.json with both profiles
Wire secrets

Add my Sentry DSN and API base URL as EAS secrets for preview and production separately.✓ 복사됨

→ eas secret:create commands listed
Trigger the build

Now trigger a preview build for iOS.✓ 복사됨

→ eas build --profile preview --platform ios command

결과: EAS builds running, secrets managed.

함정

Committing app.json with secrets inline — Secrets go in EAS env, not app.json; let Claude use expo-constants to read them

Integrate a native module using Expo config plugins

👤 Devs adding functionality that requires native code (camera, biometrics, push) ⏱ ~20 min intermediate

언제 쓸까: You need functionality beyond JS, but don't want to eject.

흐름

Identify the right package

Use the Expo skill. I need biometric auth. What's the right Expo SDK module and how do I configure it?✓ 복사됨

→ expo-local-authentication named with config plugin entries
Wire config plugin

Add the config plugin entries and required iOS usage strings.✓ 복사됨

→ app.json diff with plugins array and NSFaceIDUsageDescription

결과: Native module integrated via managed workflow.

함정

Adding raw native code and breaking managed workflow — Prefer Expo SDK modules and config plugins; eject only if truly needed

조합

다른 MCP와 조합해 10배 효율

skills-skill-7 + filesystem

Bulk-apply Expo idioms across an existing RN project

Migrate my RN-CLI app to Expo managed workflow; point at the source tree.✓ 복사됨

skills-skill-7 + git

Commit each step separately so EAS setup changes are auditable

Commit the EAS config changes as a distinct commit before adding secrets.✓ 복사됨

도구

이 MCP가 노출하는 것

도구	입력	언제 호출
expo_scaffold	app name, template, features	Starting a new app
eas_config	profiles needed	Setting up builds
config_plugin_wire	native module name	Adding native features

비용 및 제한

운영 비용

API 쿼터: None built-in
호출당 토큰: Moderate
금액: Expo is free; EAS Build has a free tier with paid scaling
팁: Use EAS local builds during dev; cloud builds only for preview/prod.

보안

권한, 시크릿, 파급범위

자격 증명 저장: No direct creds; EAS secrets are managed by Expo

데이터 외부 송신: None from skill itself

Never commit eas.json with inline secrets; use eas secret:create.
Treat expo-secure-store data as sensitive; it's encrypted but not invincible.

문제 해결

자주 발생하는 오류와 해결

Metro can't find module after install

Run npx expo install rather than npm install so SDK-compatible versions are picked

확인: npx expo-doctor

Build fails with 'unrecognized bundle identifier'

Bundle ID mismatch between app.json and Apple Developer portal; align them

Native module not found at runtime

Config plugin didn't run; rebuild with eas build or npx expo prebuild --clean

대안

skills 다른 것과 비교

대안	언제 쓰나	단점/장점
React Native CLI	You need maximum native control and don't mind managing Xcode/Gradle	Much more setup burden
Flutter	Cross-platform with Dart	Different language, different ecosystem