skills/github-actions/SKILL.md
GitHub Actions workflow patterns for React Native iOS simulator and Android emulator cloud builds with downloadable artifacts. Use when setting up CI build pipelines or downloading GitHub Actions artifacts via gh CLI and GitHub API.
npx skillsauth add callstackincubator/agent-skills github-actionsInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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Reusable GitHub Actions patterns to build React Native apps for iOS simulators and Android emulators in the cloud, then publish artifacts retrievable via gh CLI or GitHub API.
Use this skill when:
gh or REST API..github/workflows/mobile-build.yml from gha-workflow-and-downloads.md.actions/upload-artifact@v4 and capture artifact-id output.gh run download or GET /repos/{owner}/{repo}/actions/artifacts/{artifact_id}/{archive_format}.| File | Description |
|------|-------------|
| gha-ios-composite-action.md | Composite action.yml for iOS simulator .app.tar.gz builds and artifact upload |
| gha-android-composite-action.md | Composite action.yml for Android emulator .apk builds and artifact upload |
| gha-workflow-and-downloads.md | End-to-end workflow wiring plus gh and REST download commands |
| Problem | Start With |
|---------|------------|
| Need CI iOS simulator .app.tar.gz artifact | gha-ios-composite-action.md |
| Need CI Android emulator .apk artifact | gha-android-composite-action.md |
| Need one workflow to trigger both platform jobs | gha-workflow-and-downloads.md |
| Need scripted artifact download | gha-workflow-and-downloads.md |
tools
Assesses whether and how an existing mobile product should migrate to React Native. Use when auditing one or more product repositories for migration readiness, including products whose iOS, Android, and other clients live in separate directories or repositories; choosing brownfield, greenfield, or a checkpoint-based path; defining a representative trial; or preparing a baseline and ROI decision before implementation. When product scope or material evidence is unavailable, grills the stakeholder with exactly one question per turn instead of sending a questionnaire.
development
Implements an accepted incremental brownfield migration from native iOS or Android to React Native or Expo using @callstack/react-native-brownfield. Use after the brownfield path has been selected, when setting up the integration, packaging XCFramework or AAR artifacts, or adding React Native surfaces to native hosts.
development
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.
development
Reviews React Native TV apps for focus/D-pad navigation, 10-foot UI layout, TV playback/DRM integration, low-memory TV performance, and TV accessibility. Use when building, debugging, or reviewing react-native-tvos, Expo TV, Amazon Vega/Kepler, or React Native web TV targets where the issue depends on remote input, TV focus, TV packaging, TV hardware, or TV playback constraints.