iOS Simulator Skill
conorluddy/ios-simulator-skill
29 production-ready scripts for iOS app testing, building, and automation.
A skill your agent uses when working with the OpenChamber iOS Simulator app without opening Xcode - boot/install/launch the Capacitor iOS app, start a browser stream, tap/type/gesture/rotate…
Install Serve Sim
$ npx skills add openchamber/openchamber --skill serve-sim -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install openchamber/openchamber serve-sim --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/openchamber/openchamber.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/serve-sim .claude/skills/serve-sim && 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 "serve-sim" agent skill from https://github.com/openchamber/openchamber/tree/main/.agents/skills/serve-sim into .claude/skills/serve-sim/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "serve-sim", 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/openchamber/openchamber/tree/main/.agents/skills/serve-simType 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 openchamber/openchamber --skill serve-sim -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install openchamber/openchamber serve-sim --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/openchamber/openchamber.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/serve-sim .agents/skills/serve-sim && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "serve-sim" agent skill from https://github.com/openchamber/openchamber/tree/main/.agents/skills/serve-sim into .agents/skills/serve-sim/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "serve-sim", 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 openchamber/openchamber --skill serve-sim -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install openchamber/openchamber serve-sim --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/openchamber/openchamber.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/serve-sim .cursor/skills/serve-sim && 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 "serve-sim" agent skill from https://github.com/openchamber/openchamber/tree/main/.agents/skills/serve-sim into .cursor/skills/serve-sim/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "serve-sim", 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/openchamber/openchamber.git --path .agents/skills/serve-sim--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 openchamber/openchamber --skill serve-sim -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install openchamber/openchamber serve-sim --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/openchamber/openchamber.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/serve-sim .gemini/skills/serve-sim && 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 "serve-sim" agent skill from https://github.com/openchamber/openchamber/tree/main/.agents/skills/serve-sim into .gemini/skills/serve-sim/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "serve-sim", 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 openchamber/openchamber serve-simInstalls 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 openchamber/openchamber --skill serve-sim -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/openchamber/openchamber.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/serve-sim .github/skills/serve-sim && 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 "serve-sim" agent skill from https://github.com/openchamber/openchamber/tree/main/.agents/skills/serve-sim into .github/skills/serve-sim/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "serve-sim", 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 openchamber/openchamber --skill serve-sim -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install openchamber/openchamber serve-sim --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/openchamber/openchamber.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/serve-sim .opencode/skills/serve-sim && 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 "serve-sim" agent skill from https://github.com/openchamber/openchamber/tree/main/.agents/skills/serve-sim into .opencode/skills/serve-sim/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "serve-sim", 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
serve-sim- GitHub stars
- 11k
- Token cost
- ~619 tokens
- SKILL.md length
- 271 words
- Files
- 1
- Skills in repo
- 20
- Repo updated
- First seen
- Licence
- MIT
At a glance
A skill your agent uses when working with the OpenChamber iOS Simulator app without opening Xcode - boot/install/launch the Capacitor iOS app, start a browser stream, tap/type/gesture/rotate…
- Works in 4 steps: Build the simulator app → Boot if needed, install, and launch → Start the detached browser stream → …
- Working with the OpenChamber iOS Simulator app without opening Xcode - boot/install/launch the Capacitor iOS app
- SKILL.md covers Scripted Workflow, Manual Controls and Preconditions
- Calls bunx, bun and curl
What it does
Serve Sim is an agent skill from openchamber/openchamber. Use when working with the OpenChamber iOS Simulator app without opening Xcode - boot/install/launch the Capacitor iOS app, start a browser stream, tap/type/gesture/rotate, inspect accessibility, or hand a simulator URL to the user.
Its SKILL.md is about 620 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Mobile, covering iOS development, Cross-platform mobile apps and Accessibility. It works with iOS, Xcode and Bun. The repository describes itself as: Agentic Development Environment based on OpenCode AI agent. The licence is MIT.
When your agent uses it
- Working with the OpenChamber iOS Simulator app without opening Xcode - boot/install/launch the Capacitor iOS app
- Start a browser stream
- Tap/type/gesture/rotate
- Inspect accessibility
Example prompts
- “/serve-sim”
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Build the simulator app
- Boot if needed, install, and launch
- Start the detached browser stream
- Stop helpers when finished unless the user asks to keep them running
What it can do on your machine
Read from SKILL.md and the folder at commit eabe419. 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:
bunxbuncurlxcrun
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use bunx and curl, 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
Serve Sim loads about 619 tokens when it runs. Until then it costs about 60 tokens; SKILL.md has 271 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
The full file from openchamber/openchamber at commit eabe419, republished under its MIT licence (© openchamber). 271 words, ~619 tokens.
Download SKILL.mdSave it as
.claude/skills/serve-sim/SKILL.md (or your agent's skills folder).- name
- serve-sim
- description
- Use when working with the OpenChamber iOS Simulator app without opening Xcode - boot/install/launch the Capacitor iOS app, start a browser stream, tap/type/gesture/rotate, inspect accessibility, or hand a simulator URL to the user.
serve-sim
Use serve-sim to stream and control a booted Apple Simulator from the terminal. It captures the simulator framebuffer, serves a browser preview, and exposes CLI controls for taps, typing, gestures, hardware buttons, rotation, memory warnings, permissions, camera injection, and accessibility inspection.
Scripted Workflow
Run the discrete scripts from the repository root so each step has an observable completion boundary:
Build the simulator app:
sh bun run mobile:build:ios:simulatorBoot if needed, install, and launch:
sh bun run mobile:sim:runStart the detached browser stream:
sh bun run mobile:sim:serveSurface the returned JSON
url; it is the only authoritative stream address.Stop helpers when finished unless the user asks to keep them running:
sh bun run mobile:sim:kill
Completion means the app launched, the returned stream URL was surfaced, requested interactions were verified, and helpers were stopped or intentionally left running.
Manual Controls
- Tap normalized coordinates:
bunx serve-sim tap 0.5 0.5 - Type focused text:
bunx serve-sim type "hello" - Hardware home:
bunx serve-sim button home - Rotate:
bunx serve-sim rotate portrait - List streams:
bunx serve-sim --list -q - Accessibility tree:
curl http://localhost:3100/ax
Run direct CLI commands from packages/mobile (the binary lives in that package; plain serve-sim inside with-mobile-env.mjs from elsewhere fails with command not found).
Coordinates are normalized 0..1, not pixels. Prefer tap for simple taps; do not emulate taps using separate gesture begin/end commands because that can register as long press.
Preconditions
- macOS host.
- Xcode installed; use
DEVELOPER_DIR=/Applications/Xcode.app/Contents/Developerifxcode-selectpoints at CommandLineTools. - Node 18+.
- At least one simulator can be booted with
xcrun simctl.
Use the scripts above instead of opening Xcode for build/install/launch. Consume JSON output rather than parsing human output. If accessibility lookup cannot identify a target, report the missing target instead of guessing coordinates.
© openchamber, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in .agents/skills/serve-sim of openchamber/openchamber.
Open the folder on GitHubat commit eabe419
Compare with similar skills
Serve Sim 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 |
|---|---|---|---|---|---|---|
| Serve Sim this skillopenchamber/openchamber | 11k | — | ~619 | Automated safety check: Pass | MIT | |
| iOS Simulator Skillconorluddy/ios-simulator-skill | 1.3k | — | ~5.7k | Automated safety check: Pass | MIT | |
| OdevioOdevio/Odevio-CLI | 423 | — | ~7.6k | Automated safety check: Pass | MIT | |
| iOS Audio E2Ehyochan/react-native-nitro-sound | 961 | — | ~907 | Automated safety check: Pass | MIT | |
| Debug Rn Native CrashLedgerHQ/ledger-live | 622 | — | ~1.2k | Automated safety check: Pass | MIT | |
| Limrun Xcodesuperset-sh/superset | 15k | — | ~6.5k | Automated safety check: Notes | Custom licence |
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Related
Categories
Questions about Serve Sim
What does Serve Sim do?
A skill your agent uses when working with the OpenChamber iOS Simulator app without opening Xcode - boot/install/launch the Capacitor iOS app, start a browser stream, tap/type/gesture/rotate…. Serve Sim is an agent skill from openchamber/openchamber. Use when working with the OpenChamber iOS Simulator app without opening Xcode - boot/install/launch the Capacitor iOS app, start a browser stream, tap/type/gesture/rotate, inspect accessibility, or hand a simulator URL to the user.
When should I use Serve Sim?
Serve Sim fits situations like: working with the OpenChamber iOS Simulator app without opening Xcode - boot/install/launch the Capacitor iOS app; start a browser stream; tap/type/gesture/rotate; inspect accessibility.
How do I install Serve Sim in Claude Code?
Run `npx skills add openchamber/openchamber --skill serve-sim -a claude-code`. Or copy the skill folder (.agents/skills/serve-sim in openchamber/openchamber) into .claude/skills/serve-sim in your project. Claude Code loads it when a task matches its description.
How do I install Serve Sim in Codex?
Run `npx skills add openchamber/openchamber --skill serve-sim -a codex`. Or copy the skill folder (.agents/skills/serve-sim in openchamber/openchamber) into .agents/skills/serve-sim in your project. Codex loads it when a task matches its description.
Can I use Serve Sim 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 openchamber/openchamber --skill serve-sim -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/serve-sim, .gemini/skills/serve-sim, .github/skills/serve-sim and .opencode/skills/serve-sim in your project.
What does Serve Sim need to run?
Going by SKILL.md and its folder, Serve Sim needs the command-line tools its instructions call (bunx, bun, curl and xcrun).
Does Serve Sim access the network?
SKILL.md contains no URLs. Its commands use curl, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Serve Sim 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 Serve Sim use?
Serve Sim 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 Serve Sim use?
About 619 tokens (SKILL.md is roughly 2.5k 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 Serve Sim?
Skills that share tags, products or a category with Serve Sim: iOS Simulator Skill (conorluddy/ios-simulator-skill, 1.3k stars), Odevio (Odevio/Odevio-CLI, 423 stars), iOS Audio E2E (hyochan/react-native-nitro-sound, 961 stars) and Debug Rn Native Crash (LedgerHQ/ledger-live, 622 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Serve Sim?
openchamber (a GitHub organization) maintains it in openchamber/openchamber, which has 11,259 GitHub stars. The repository holds 20 skills in this directory. The repository was last updated on October 8, 2026.
Source: openchamber/openchamber on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.