Official agent skill

Agent Device

by callstackincubator in callstackincubator/agent-skills

Automates interactions for Apple-platform apps (iOS, tvOS, macOS) and Android devices.

OfficialMITAuto-check passedMobile

Install Agent Device

skills CLI
$ npx skills add callstackincubator/agent-skills --skill agent-device -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install callstackincubator/agent-skills agent-device --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/callstackincubator/agent-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/vendored/.agents/skills/agent-device .claude/skills/agent-device && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
agent-device
GitHub stars
1.7k
Token cost
~1.2k tokens
SKILL.md length
613 words
Files
8 (incl. references)
Skills in repo
12
Repo updated
First seen
Licence
MIT

At a glance

Automates interactions for Apple-platform apps (iOS, tvOS, macOS) and Android devices.

  • Works in 7 steps: Load references/bootstrap-install.md and… → Use bootstrap first to confirm or… → Once the app session is open and stable,… → …
  • Navigating apps
  • SKILL.md covers Default operating rules, Default flow, QA modes and Required references, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Agent Device is an agent skill from callstackincubator/agent-skills, published by the product's own GitHub organization. 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.

Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 8 other files, including reference files (for example `references/bootstrap-install.md`, `references/coordinate-system.md` and `references/debugging.md`).

It sits in Mobile, covering iOS development. It works with Android, iOS and macOS. The repository describes itself as: A collection of agent-optimized React Native skills for AI coding assistants. The licence is MIT.

When your agent uses it

  • Navigating apps
  • Taking snapshots/screenshots
  • Extracting UI info across mobile
  • Desktop targets

Example prompts

  • “Use the agent-device skill to automate interactions for Apple-platform apps (iOS, tvOS, macOS) and Android devices”
  • “/agent-device”

Workflow steps

7 steps, taken from the first numbered list in SKILL.md.

  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.

What it can do on your machine

Read from SKILL.md and the folder at commit 61e6e7d. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Agent Device loads about 1.2k tokens when it runs, and up to ~10k if it reads all its reference files. Until then it costs about 61 tokens; SKILL.md has 613 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~61
When it runs · the whole SKILL.md, loaded when a task matches
~1.2k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~10k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from callstackincubator/agent-skills at commit 61e6e7d, republished under its MIT licence (© callstackincubator). 613 words, ~1,222 tokens.

Download SKILL.mdSave it as .claude/skills/agent-device/SKILL.md (or your agent's skills folder). This skill also uses 7 other files; get the full folder from GitHub.
name
agent-device
description
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.

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.
Show full SKILL.md (242 more words)Show less

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

© callstackincubator, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 7 other files (references) in plugins/vendored/.agents/skills/agent-device of callstackincubator/agent-skills.

  • SKILL.md
  • references/bootstrap-install.md
  • references/coordinate-system.md
  • references/debugging.md
  • references/exploration.md
  • references/macos-desktop.md
  • references/remote-tenancy.md
  • references/verification.md

Open the folder on GitHubat commit 61e6e7d

Compare with similar skills

Agent Device next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Agent Device compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Agent Device this skillcallstackincubator/agent-skills1.7k—~1.2kAutomated safety check: PassMIT
Phoneagentrounak/PhoneAgent798—~2.2kAutomated safety check: PassMIT
Ksafeioannisa/KSafe332—~17kAutomated safety check: PassApache-2.0
Agent Devicegronxb/codex-relay678—~1.8kAutomated safety check: PassApache-2.0
Agent DeviceCherryHQ/cherry-studio-app4k—~342Automated safety check: PassAGPL-3.0
Eas Simulatorexpo/skills2.7k—~6.6kAutomated safety check: NotesMIT

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Works with

Categories

Questions about Agent Device

What does Agent Device do?

Automates interactions for Apple-platform apps (iOS, tvOS, macOS) and Android devices. Agent Device is an agent skill from callstackincubator/agent-skills, published by the product's own GitHub organization. Automates interactions for Apple-platform apps (iOS, tvOS, macOS) and Android devices.

When should I use Agent Device?

Agent Device fits situations like: navigating apps; taking snapshots/screenshots; extracting UI info across mobile; desktop targets.

How do I install Agent Device in Claude Code?

Run `npx skills add callstackincubator/agent-skills --skill agent-device -a claude-code`. Or copy the skill folder (plugins/vendored/.agents/skills/agent-device in callstackincubator/agent-skills) into .claude/skills/agent-device in your project. Claude Code loads it when a task matches its description.

How do I install Agent Device in Codex?

Run `npx skills add callstackincubator/agent-skills --skill agent-device -a codex`. Or copy the skill folder (plugins/vendored/.agents/skills/agent-device in callstackincubator/agent-skills) into .agents/skills/agent-device in your project. Codex loads it when a task matches its description.

Can I use Agent Device in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add callstackincubator/agent-skills --skill agent-device -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/agent-device, .gemini/skills/agent-device, .github/skills/agent-device and .opencode/skills/agent-device in your project.

What does Agent Device need to run?

SKILL.md names no scripts, command-line tools or credentials: Agent Device is instructions for the agent only.

Does Agent Device access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Agent Device safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Agent Device use?

Agent Device is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Agent Device use?

About 1.2k tokens (SKILL.md is roughly 4.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 9.1k tokens, read only when the agent opens those files.

What are the alternatives to Agent Device?

Skills that share tags, products or a category with Agent Device: Phoneagent (rounak/PhoneAgent, 798 stars), Ksafe (ioannisa/KSafe, 332 stars), Agent Device (gronxb/codex-relay, 678 stars) and Agent Device (CherryHQ/cherry-studio-app, 4k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Agent Device?

callstackincubator (a GitHub organization, an official publisher) maintains it in callstackincubator/agent-skills, which has 1,664 GitHub stars. The repository holds 12 skills in this directory. The repository was last updated on October 6, 2026.

Source: callstackincubator/agent-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.