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Agent skill

Agent Device

by gronxb in gronxb/hot-updater

Automates interactions for iOS simulators/devices and Android emulators/devices.

Custom licenceAuto-check passedMobile

Install Agent Device

skills CLI
$ npx skills add gronxb/hot-updater --skill agent-device -a claude-code

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

GitHub CLI
$ gh skill install gronxb/hot-updater 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/gronxb/hot-updater.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.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
1.8k
Token cost
~3.9k tokens
SKILL.md length
1,370 words
Files
10 (incl. references)
Skills in repo
6
Repo updated
First seen
Licence
Custom licence

At a glance

Automates interactions for iOS simulators/devices and Android emulators/devices.

  • Works in 4 steps: Normal Interaction Flow → Debug/Crash Flow → Replay Maintenance Flow → …
  • Navigating apps
  • SKILL.md covers Start Here (Read This First), Decision Map, Target Selection Rules and Canonical Flows, plus 6 more sections
  • Calls curl and npx; needs AGENT_DEVICE_DAEMON_AUTH_TOKEN

What it does

Agent Device is an agent skill from gronxb/hot-updater. Automates interactions for iOS simulators/devices and Android emulators/devices. Use when navigating apps, taking snapshots/screenshots, tapping, typing, scrolling, or extracting UI info on mobile targets.

Its SKILL.md is about 3.9k tokens, which your agent loads only when the skill is triggered. The skill folder holds 10 other files, including reference files (for example `references/batching.md`, `references/coordinate-system.md` and `references/logs-and-debug.md`).

It sits in Mobile, covering Cross-platform mobile apps. It works with Android, iOS and React Native. The repository describes itself as: A self-hostable OTA update solution for React Native (Alternative to CodePush).

When your agent uses it

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

Example prompts

  • “Use the agent-device skill to automate interactions for iOS simulators/devices and Android emulators/devices”
  • “/agent-device”

Requirements

  • A credential in AGENT_DEVICE_DAEMON_AUTH_TOKEN

Workflow steps

4 steps, taken from the step headings in SKILL.md.

  1. Normal Interaction Flow
  2. Debug/Crash Flow
  3. Replay Maintenance Flow
  4. Remote Tenant Lease Flow (HTTP JSON-RPC)

What it can do on your machine

Read from SKILL.md and the folder at commit fd46758. 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

    Shell commands in SKILL.md call:

    • curl
    • npx

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

  • Network

    No URLs in SKILL.md. Its commands use curl and npx, which can reach the network depending on how they are called.

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

  • Credentials

    Names these keys or tokens, usually read from environment variables:

    • AGENT_DEVICE_DAEMON_AUTH_TOKEN

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

Context cost

Agent Device loads about 3.9k tokens when it runs, and up to ~9.4k if it reads all its reference files. Until then it costs about 55 tokens; SKILL.md has 1,370 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~55
When it runs · the whole SKILL.md, loaded when a task matches
~3.9k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~9.4k

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

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 1,370 words (~3,940 tokens).

“For exploration, use snapshot refs. For deterministic replay, use selectors. For structured exploratory QA bug hunts and reporting, use ../dogfood/SKILL.md.”

— opening of SKILL.md by gronxb, Custom licence
name
agent-device

Read the full SKILL.md on GitHub

Files

SKILL.md and 9 other files (references) in .agents/skills/agent-device of gronxb/hot-updater.

  • SKILL.md
  • references/batching.md
  • references/coordinate-system.md
  • references/logs-and-debug.md
  • references/perf-metrics.md
  • references/permissions.md
  • references/remote-tenancy.md
  • references/session-management.md
  • references/snapshot-refs.md
  • references/video-recording.md

Open the folder on GitHubat commit fd46758

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 skillgronxb/hot-updater1.8k—~3.9kAutomated safety check: PassCustom licence
Rnn Codebasewix/react-native-navigation13k—~2kAutomated safety check: PassMIT
Expo Tailwind SetupCherryHQ/cherry-studio-app4k8 repos~3kAutomated safety check: PassMIT
Screenmapaleqsio/screenmap242—~7.2kAutomated safety check: PassMIT
Expo Brownfield Integrationmweinbach/agent-coworker1562 repos~900Automated safety check: NotesCustom licence
Simulator Audio E2Ehyochan/react-native-nitro-sound961—~1.1kAutomated safety check: PassMIT

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    wix/react-native-navigation

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    13k GitHub stars~2k tokensUpdated 2 days ago
    MobileAuto-check passed

  • Expo Tailwind Setup

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    Set up Tailwind CSS v4 in Expo with react-native-css and NativeWind v5 for universal styling

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  • Expo Brownfield Integration

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    Helps add Expo and React Native to an existing native iOS or Android app, and choose between a prebuilt AAR or XCFramework and a fully integrated build.

    156 GitHub starsUsed in 2 repos~900 tokens
    MobileAuto-check: notes

  • Simulator Audio E2E

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More from gronxb/hot-updater

  • E2E

    gronxb/hot-updater

    Run end-to-end OTA verification for examples/v0.85.0 with agent-device.

    1.8k GitHub stars~1.6k tokensUpdated today
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  • E2E Current PR

    gronxb/hot-updater

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    1.8k GitHub stars~1k tokensUpdated today
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  • E2E Default

    gronxb/hot-updater

    Run a fixed OTA regression flow for examples/v0.85.0 with agent-device.

    1.8k GitHub stars~3.1k tokensUpdated today
    Auto-check passed

  • Fix CI

    gronxb/hot-updater

    Run a local pnpm monorepo CI loop, fix failures, and stop only when the full sequence is green.

    1.8k GitHub stars~572 tokensUpdated today
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  • Hot Updater Agent

    gronxb/hot-updater

    A skill your agent uses when an AI agent needs to run, monitor, diagnose, or iterate HotUpdater E2E jobs through the local hot-updater-agent dashboard CLI instead of running device flows directly.

    1.8k GitHub stars~598 tokensUpdated today
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Works with

Categories

Questions about Agent Device

What does Agent Device do?

Automates interactions for iOS simulators/devices and Android emulators/devices. Agent Device is an agent skill from gronxb/hot-updater. Automates interactions for iOS simulators/devices and Android emulators/devices.

When should I use Agent Device?

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

How do I install Agent Device in Claude Code?

Run `npx skills add gronxb/hot-updater --skill agent-device -a claude-code`. Or copy the skill folder (.agents/skills/agent-device in gronxb/hot-updater) 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 gronxb/hot-updater --skill agent-device -a codex`. Or copy the skill folder (.agents/skills/agent-device in gronxb/hot-updater) 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 gronxb/hot-updater --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?

Going by SKILL.md and its folder, Agent Device needs the command-line tools its instructions call (curl and npx) and credentials named AGENT_DEVICE_DAEMON_AUTH_TOKEN. Our summary lists: A credential in AGENT_DEVICE_DAEMON_AUTH_TOKEN.

Does Agent Device access the network?

SKILL.md contains no URLs. Its commands use curl and npx, which can reach the network depending on how they are called. 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 has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Agent Device use?

About 3.9k tokens (SKILL.md is roughly 16k 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 5.5k 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: Rnn Codebase (wix/react-native-navigation, 13k stars), Expo Tailwind Setup (CherryHQ/cherry-studio-app, 4k stars), Screenmap (aleqsio/screenmap, 242 stars) and Expo Brownfield Integration (mweinbach/agent-coworker, 156 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Agent Device?

gronxb (a GitHub user) maintains it in gronxb/hot-updater, which has 1,760 GitHub stars. The repository holds 6 skills in this directory. The repository was last updated on October 8, 2026.

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