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agent-device

Automates interactions for Apple-platform apps (iOS, tvOS, macOS) and Android devices. Use when navigating apps, taking snapshots/screenshots, tapping, typing, scrolling, or extracting UI info across mobile, TV, and desktop targets.

Compatible conClaude Code~Codex CLI~Cursor
npx add-skill https://github.com/callstackincubator/agent-skills/tree/main/plugins/vendored/.agents/skills/agent-device

agent-device

Use this skill as a router with mandatory defaults. Read this file first. For normal device tasks, always load references/bootstrap-install.md and references/exploration.md before acting. Use bootstrap to confirm or establish deterministic setup. Use exploration for UI inspection, interaction, and verification once the app session is open.

Default operating rules

  • Start conservative. Prefer read-only inspection before mutating the UI.
  • Use plain snapshot when the task is to verify what text or structure is currently visible on screen.
  • Use snapshot -i only when you need interactive refs such as @e3 for a requested action or targeted query.
  • Avoid speculative mutations. You may take the smallest reversible UI action needed to unblock inspection or complete the requested task, such as dismissing a popup, closing an alert, or clearing an unintended surface.
  • Do not browse the web or use external sources unless the user explicitly asks.
  • Re-snapshot after meaningful UI changes instead of reusing stale refs.
  • Prefer @ref or selector targeting over raw coordinates.
  • Ensure the correct target is pinned and an app session is open before interacting.
  • Keep the loop short: open -> inspect/act -> verify if needed -> close.

Default flow

  1. Load references/bootstrap-install.md and references/exploration.md before acting on a normal device task.
  2. Use bootstrap first to confirm or establish the correct target, app install, and open app session.
  3. Once the app session is open and stable, use exploration for inspection, interaction, and verification.
  4. Start with plain snapshot if the goal is to read or verify what is visible.
  5. Escalate to snapshot -i only if you need refs for interactive exploration or a requested action.
  6. Use get, is, or find before mutating the UI when a read-only command can answer the question.
  7. End by capturing proof if needed, then close.

QA modes

Required references

  • For every normal device task, after reading this file, load references/bootstrap-install.md first, then references/exploration.md, before acting.
  • Use bootstrap to confirm or establish deterministic setup, especially in sandbox or cloud environments.
  • Use exploration once the app session is open and stable.
  • Load additional references only when their scope is needed.

Decision rules

  • Use plain snapshot when you need to verify whether text is visible.
  • Use snapshot -i mainly for interactive exploration and choosing refs.
  • Use get, is, or find when they can answer the question without changing UI state.
  • Use fill to replace text.
  • Use type to append text.
  • When a task asks to "go back", use plain back for predictable app-owned navigation and reserve back --system for platform back gestures or button semantics.
  • Use type --delay-ms or fill --delay-ms for debounced search fields that drop characters when typed too quickly.
  • If there is no simulator, no app install, or no open app session yet, switch to bootstrap-install.md instead of improvising setup steps.
  • Use the smallest unblock action first when transient UI blocks inspection, but do not navigate, search, or enter new text just to make the UI reveal data unless the user asked for that interaction.
  • Do not use external lookups to compensate for missing on-screen data unless the user asked for them.
  • If the needed information is not exposed on screen, say that plainly instead of compensating with extra navigation, text entry, or web search.
  • Prefer @ref or selector targeting over raw coordinates.

Additional references

Individual skills in this repo

This repo contains 9 individual skills — each has its own dedicated page.

dogfood

Systematically explore and test a mobile app on iOS/Android with agent-device to find bugs, UX issues, and other problems. Use when asked to "dogfood", "QA", "exploratory test", "find issues", "bug hunt", or "test this app" on mobile. Produces a structured report with reproducible evidence: screenshots, optional repro videos, and detailed steps for every issue.

github

GitHub patterns using gh CLI for pull requests, stacked PRs, code review, branching strategies, and repository automation. Use when working with GitHub PRs, merging strategies, or repository management tasks.

github-actions

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.

react-native-best-practices

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-brownfield-migration

Provides an incremental adoption strategy to migrate native iOS or Android apps to React Native or Expo using @callstack/react-native-brownfield for initial setup. Use when planning migration steps, packaging XCFramework/AAR artifacts, and integrating them into host apps.

react-native-testing

Write tests using React Native Testing Library (RNTL) v13 and v14 (`@testing-library/react-native`). Use when writing, reviewing, or fixing React Native component tests. Covers: render, screen, queries (getBy/getAllBy/queryBy/findBy), Jest matchers, userEvent, fireEvent, waitFor, and async patterns. Supports v13 (React 18, sync render) and v14 (React 19+, async render). Triggers on: test files for React Native components, RNTL imports, mentions of "testing library", "write tests", "component tests", or "RNTL".

upgrading-react-native

Upgrades React Native apps to newer versions by applying rn-diff-purge template diffs, updating package.json dependencies, migrating native iOS and Android configuration, resolving CocoaPods and Gradle changes, and handling breaking API updates. Use when upgrading React Native, bumping RN version, updating from RN 0.x to 0.y, or migrating Expo SDK alongside a React Native upgrade.

validate-skills

Validates skills in this repo against agentskills.io spec and Claude Code best practices. Use via /validate-skills command.

vercel-react-native-skills

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.

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