Expo UI
arcboxlabs/linkcode
Framework (OSS). An agent skill from arcboxlabs/linkcode.
A skill your agent uses when building, running, changing, or debugging local iOS, Android, Expo, React Native, or SwiftUI apps.
Install Mobile Dev
$ npx skills add callstackincubator/codex-mobile-dev-plugin --skill mobile-dev -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install callstackincubator/codex-mobile-dev-plugin mobile-dev --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/callstackincubator/codex-mobile-dev-plugin.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/mobile-dev .claude/skills/mobile-dev && rm -rf skills-srcUse ~/.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/
Install the "mobile-dev" agent skill from https://github.com/callstackincubator/codex-mobile-dev-plugin/tree/main/skills/mobile-dev into .claude/skills/mobile-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mobile-dev", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/callstackincubator/codex-mobile-dev-plugin/tree/main/skills/mobile-devType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add callstackincubator/codex-mobile-dev-plugin --skill mobile-dev -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install callstackincubator/codex-mobile-dev-plugin mobile-dev --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/callstackincubator/codex-mobile-dev-plugin.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/mobile-dev .agents/skills/mobile-dev && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "mobile-dev" agent skill from https://github.com/callstackincubator/codex-mobile-dev-plugin/tree/main/skills/mobile-dev into .agents/skills/mobile-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mobile-dev", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add callstackincubator/codex-mobile-dev-plugin --skill mobile-dev -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install callstackincubator/codex-mobile-dev-plugin mobile-dev --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/callstackincubator/codex-mobile-dev-plugin.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/mobile-dev .cursor/skills/mobile-dev && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "mobile-dev" agent skill from https://github.com/callstackincubator/codex-mobile-dev-plugin/tree/main/skills/mobile-dev into .cursor/skills/mobile-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mobile-dev", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/callstackincubator/codex-mobile-dev-plugin.git --path skills/mobile-dev--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add callstackincubator/codex-mobile-dev-plugin --skill mobile-dev -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install callstackincubator/codex-mobile-dev-plugin mobile-dev --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/callstackincubator/codex-mobile-dev-plugin.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/mobile-dev .gemini/skills/mobile-dev && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "mobile-dev" agent skill from https://github.com/callstackincubator/codex-mobile-dev-plugin/tree/main/skills/mobile-dev into .gemini/skills/mobile-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mobile-dev", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install callstackincubator/codex-mobile-dev-plugin mobile-devInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add callstackincubator/codex-mobile-dev-plugin --skill mobile-dev -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/callstackincubator/codex-mobile-dev-plugin.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/mobile-dev .github/skills/mobile-dev && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "mobile-dev" agent skill from https://github.com/callstackincubator/codex-mobile-dev-plugin/tree/main/skills/mobile-dev into .github/skills/mobile-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mobile-dev", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add callstackincubator/codex-mobile-dev-plugin --skill mobile-dev -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install callstackincubator/codex-mobile-dev-plugin mobile-dev --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/callstackincubator/codex-mobile-dev-plugin.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/mobile-dev .opencode/skills/mobile-dev && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "mobile-dev" agent skill from https://github.com/callstackincubator/codex-mobile-dev-plugin/tree/main/skills/mobile-dev into .opencode/skills/mobile-dev/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mobile-dev", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
mobile-dev- GitHub stars
- 138
- Token cost
- ~5.5k tokens
- SKILL.md length
- 3,165 words
- Files
- 2
- Skills in repo
- 4
- Repo updated
- First seen
- Licence
- None found
At a glance
A skill your agent uses when building, running, changing, or debugging local iOS, Android, Expo, React Native, or SwiftUI apps.
- Works in 6 steps: Open the panel beside the chat with… → Use the task and app project to choose… → Boot a chosen stopped iOS simulator with… → …
- Debugging local iOS
- Calls npm and adb
- Device streaming
What it does
Mobile Dev is an agent skill from callstackincubator/codex-mobile-dev-plugin, published by the product's own GitHub organization. Use when building, running, changing, or debugging local iOS, Android, Expo, React Native, or SwiftUI apps. Open the simulator beside the chat and control the app with bundled MCP tools. Also use for device streaming, screenshots, accessibility reads, logs, and interactive CPU, memory, and FPS charts. Skip web-only apps and tasks limited to planning, docs, or code review.
Its SKILL.md is about 5.5k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `agents/openai.yaml`).
It sits in Mobile, covering Cross-platform mobile apps, iOS development and MCP servers. It works with Android, iOS, React Native and Expo. The repository describes itself as: A Codex plugin for a better mobile development experience for android and iOS.
When your agent uses it
- Debugging local iOS
- Device streaming
- Accessibility reads
- Interactive CPU
Example prompts
- “/mobile-dev”
Workflow steps
6 steps, taken from the first numbered list in SKILL.md.
- Open the panel beside the chat with mobile_open_simulator by default. For an existing app, open it when starting device work; for a new…
- Use the task and app project to choose the platform. Follow the user's device choice; otherwise reuse a compatible device shared by the…
- Boot a chosen stopped iOS simulator with mobile_boot_simulator, or an Android AVD with mobile_boot_android_emulator. A mobile app…
- Build, install, and launch the app with the app project's own tools and the chosen device ID. Follow the project's framework skills where…
- Agent Device is temporarily disabled in this plugin while iterating on inline performance charts. Use the available Mobile Dev tools; do…
- For direct Baguette input, read mobile_describe_ui or mobile_screenshot first. Gesture coordinates use device points. Match width and…
What it can do on your machine
Read from SKILL.md and the folder at commit 85c112d. 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:
npmadb
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use npm, 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 no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Mobile Dev loads about 5.5k tokens when it runs. Until then it costs about 96 tokens; SKILL.md has 3,165 words of instructions outside code blocks.
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
Without a licence we can't republish the file, so here is its outline and opening line. It has 3,165 words (~5,503 tokens).
“Use the Mobile Dev MCP tools for local iOS and Android work. The plugin includes Baguette and starts it when you open the panel or list devices. Do not ask the user to install Baguette or run a separate server.”
- name
- mobile-dev
Files
SKILL.md and 1 other file in skills/mobile-dev of callstackincubator/codex-mobile-dev-plugin.
- SKILL.md
- agents/openai.yaml
Open the folder on GitHubat commit 85c112d
Compare with similar skills
Mobile Dev 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Mobile Dev this skillcallstackincubator/codex-mobile-dev-plugin | 138 | — | ~5.5k | Automated safety check: Pass | None | |
| Expo UIarcboxlabs/linkcode | 155 | — | ~1.2k | Automated safety check: Pass | MIT | |
| Expo Brownfieldexpo/skills | 2.7k | — | ~1.4k | Automated safety check: Pass | MIT | |
| Expo Brownfield Integrationmweinbach/agent-coworker | 156 | 2 repos | ~900 | Automated safety check: Notes | Custom licence | |
| SimdeckNativeScript/SimDeck | 152 | — | ~3.6k | Automated safety check: Pass | MIT | |
| Web To Mobilesuntay44/web-to-mobile-magic-plugin | 107 | — | ~781 | Automated safety check: Pass | MIT |
Similar skills
- Official
Expo Brownfield
expo/skills
Integrate Expo and React Native into an existing native iOS or Android app.
Expo Brownfield Integration
mweinbach/agent-coworker
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.
Simdeck
NativeScript/SimDeck
A skill your agent uses for simulator lifecycle, app install/launch, live viewing, UI inspection, touch/keyboard automation, screenshots, recordings, logs, pasteboard, hardware controls, and…
Web To Mobile
suntay44/web-to-mobile-magic-plugin
Orchestrate website or web app conversion into a mobile app.
React Native Expert
Jeffallan/claude-skills
Builds React Native and Expo apps for iOS and Android: Expo Router navigation, FlatList tuning, platform-specific code and build error recovery.
More from callstackincubator/codex-mobile-dev-plugin
- Official
Build Codex Native Plugins
callstackincubator/codex-mobile-dev-plugin
Create, extend, package, and troubleshoot Codex and ChatGPT plugins using OpenAI MCP Extensions.
- Official
Agent Device
callstackincubator/codex-mobile-dev-plugin
Control a local iOS simulator or Android device with Mobile Dev's bundled agent-device MCP tools.
- Official
Mobile Dev Setup
callstackincubator/codex-mobile-dev-plugin
Set up the Mobile Dev plugin's bundled iOS and Android backends and check local device tools.
Related
Works with
Categories
Questions about Mobile Dev
What does Mobile Dev do?
A skill your agent uses when building, running, changing, or debugging local iOS, Android, Expo, React Native, or SwiftUI apps. Mobile Dev is an agent skill from callstackincubator/codex-mobile-dev-plugin, published by the product's own GitHub organization. Use when building, running, changing, or debugging local iOS, Android, Expo, React Native, or SwiftUI apps.
When should I use Mobile Dev?
Mobile Dev fits situations like: debugging local iOS; device streaming; accessibility reads; interactive CPU.
How do I install Mobile Dev in Claude Code?
Run `npx skills add callstackincubator/codex-mobile-dev-plugin --skill mobile-dev -a claude-code`. Or copy the skill folder (skills/mobile-dev in callstackincubator/codex-mobile-dev-plugin) into .claude/skills/mobile-dev in your project. Claude Code loads it when a task matches its description.
How do I install Mobile Dev in Codex?
Run `npx skills add callstackincubator/codex-mobile-dev-plugin --skill mobile-dev -a codex`. Or copy the skill folder (skills/mobile-dev in callstackincubator/codex-mobile-dev-plugin) into .agents/skills/mobile-dev in your project. Codex loads it when a task matches its description.
Can I use Mobile Dev 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/codex-mobile-dev-plugin --skill mobile-dev -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/mobile-dev, .gemini/skills/mobile-dev, .github/skills/mobile-dev and .opencode/skills/mobile-dev in your project.
What does Mobile Dev need to run?
Going by SKILL.md and its folder, Mobile Dev needs the command-line tools its instructions call (npm and adb).
Does Mobile Dev access the network?
SKILL.md contains no URLs. Its commands use npm, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Mobile Dev 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 Mobile Dev use?
No licence was found for Mobile Dev or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Mobile Dev use?
About 5.5k tokens (SKILL.md is roughly 22k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Mobile Dev?
Skills that share tags, products or a category with Mobile Dev: Expo UI (arcboxlabs/linkcode, 155 stars), Expo Brownfield (expo/skills, 2.7k stars), Expo Brownfield Integration (mweinbach/agent-coworker, 156 stars) and Simdeck (NativeScript/SimDeck, 152 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Mobile Dev?
callstackincubator (a GitHub organization, an official publisher) maintains it in callstackincubator/codex-mobile-dev-plugin, which has 138 GitHub stars. The repository holds 4 skills in this directory. The repository was last updated on October 7, 2026.
Source: callstackincubator/codex-mobile-dev-plugin on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.