Orca iOS Simulator Control
stablyai/orca
iOS Simulator control from inside Orca, with the live device view in Orca's emulator pane. Use when driving a booted Apple Simulator on macOS: taps, gestures…
This skill should be used when the user invokes "/xcode-build-simulator" to build the current Xcode project for the iOS Simulator (generic destination).
Install Xcode Build Simulator
$ npx skills add xenodium/emacs-skills --skill xcode-build-simulator -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install xenodium/emacs-skills xcode-build-simulator --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/xenodium/emacs-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/xcode-build-simulator .claude/skills/xcode-build-simulator && 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 "xcode-build-simulator" agent skill from https://github.com/xenodium/emacs-skills/tree/main/skills/xcode-build-simulator into .claude/skills/xcode-build-simulator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xcode-build-simulator", 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/xenodium/emacs-skills/tree/main/skills/xcode-build-simulatorType 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 xenodium/emacs-skills --skill xcode-build-simulator -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install xenodium/emacs-skills xcode-build-simulator --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/xenodium/emacs-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/xcode-build-simulator .agents/skills/xcode-build-simulator && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "xcode-build-simulator" agent skill from https://github.com/xenodium/emacs-skills/tree/main/skills/xcode-build-simulator into .agents/skills/xcode-build-simulator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xcode-build-simulator", 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 xenodium/emacs-skills --skill xcode-build-simulator -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install xenodium/emacs-skills xcode-build-simulator --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/xenodium/emacs-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/xcode-build-simulator .cursor/skills/xcode-build-simulator && 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 "xcode-build-simulator" agent skill from https://github.com/xenodium/emacs-skills/tree/main/skills/xcode-build-simulator into .cursor/skills/xcode-build-simulator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xcode-build-simulator", 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/xenodium/emacs-skills.git --path skills/xcode-build-simulator--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 xenodium/emacs-skills --skill xcode-build-simulator -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install xenodium/emacs-skills xcode-build-simulator --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/xenodium/emacs-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/xcode-build-simulator .gemini/skills/xcode-build-simulator && 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 "xcode-build-simulator" agent skill from https://github.com/xenodium/emacs-skills/tree/main/skills/xcode-build-simulator into .gemini/skills/xcode-build-simulator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xcode-build-simulator", 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 xenodium/emacs-skills xcode-build-simulatorInstalls 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 xenodium/emacs-skills --skill xcode-build-simulator -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/xenodium/emacs-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/xcode-build-simulator .github/skills/xcode-build-simulator && 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 "xcode-build-simulator" agent skill from https://github.com/xenodium/emacs-skills/tree/main/skills/xcode-build-simulator into .github/skills/xcode-build-simulator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xcode-build-simulator", 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 xenodium/emacs-skills --skill xcode-build-simulator -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install xenodium/emacs-skills xcode-build-simulator --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/xenodium/emacs-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/xcode-build-simulator .opencode/skills/xcode-build-simulator && 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 "xcode-build-simulator" agent skill from https://github.com/xenodium/emacs-skills/tree/main/skills/xcode-build-simulator into .opencode/skills/xcode-build-simulator/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "xcode-build-simulator", 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
xcode-build-simulator- GitHub stars
- 142
- Token cost
- ~425 tokens
- SKILL.md length
- 175 words
- Files
- 1
- Skills in repo
- 19
- Repo updated
- First seen
- Licence
- None found
At a glance
This skill should be used when the user invokes "/xcode-build-simulator" to build the current Xcode project for the iOS Simulator (generic destination).
- Invokes /xcode-build-simulator to build the current Xcode project for the iOS Simulator (generic destination)
- SKILL.md covers How to build and Rules
- Calls xcodebuild
- Tasks that involve iOS development
What it does
Xcode Build Simulator is an agent skill from xenodium/emacs-skills. This skill should be used when the user invokes "/xcode-build-simulator" to build the current Xcode project for the iOS Simulator (generic destination).
Its SKILL.md is about 430 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. It works with Xcode and iOS. The repository describes itself as: Emacs skills for coding agents.
When your agent uses it
- Invokes /xcode-build-simulator to build the current Xcode project for the iOS Simulator (generic destination)
- Tasks that involve iOS development
Example prompts
- “/xcode-build-simulator”
- “/xcode-build-simulator”
What it can do on your machine
Read from SKILL.md and the folder at commit a158238. 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:
xcodebuild
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
Xcode Build Simulator loads about 425 tokens when it runs. Until then it costs about 44 tokens; SKILL.md has 175 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 175 words (~425 tokens).
“Build the Xcode workspace or project under the current working directory for the iOS Simulator. Uses a generic simulator destination (no specific UDID), so no simulator needs to be booted.”
- name
- xcode-build-simulator
- tools
- Bash
- disable-model-invocation
- true
Files
Just SKILL.md in skills/xcode-build-simulator of xenodium/emacs-skills.
Open the folder on GitHubat commit a158238
Compare with similar skills
Xcode Build Simulator 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 |
|---|---|---|---|---|---|---|
| Xcode Build Simulator this skillxenodium/emacs-skills | 142 | — | ~425 | Automated safety check: Pass | None | |
| Orca iOS Simulator Controlstablyai/orca | 87k | 1 repos | ~584 | Automated safety check: Pass | Apache-2.0 | |
| Apple Crash Log .NET Symbolicationdotnet/skills | 5.6k | 1 repos | ~2.4k | Automated safety check: Pass | MIT | |
| Update Swiftui APIsAvdLee/SwiftUI-Agent-Skill | 3.7k | — | ~1.2k | Automated safety check: Pass | MIT | |
| iOS Simulator Skillconorluddy/ios-simulator-skill | 1.3k | — | ~5.7k | Automated safety check: Pass | MIT | |
| Macios Xcode Beta Updatedotnet/macios | 2.9k | — | ~1.8k | Automated safety check: Pass | Custom licence |
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Resolves .NET runtime frames in Apple .ips crash logs to function names, source files and line numbers using dSYM symbols, atos and the Microsoft symbol server.
Update Swiftui APIs
AvdLee/SwiftUI-Agent-Skill
Scan Apple's SwiftUI documentation for deprecated APIs and update the SwiftUI Expert Skill with modern replacements.
iOS Simulator Skill
conorluddy/ios-simulator-skill
29 production-ready scripts for iOS app testing, building, and automation.
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Macios Xcode Beta Update
dotnet/macios
Update dotnet/macios to a new Xcode beta and validate it end-to-end.
Odevio
Odevio/Odevio-CLI
Take a Flutter project to an iPhone or the App Store with Odevio - build, sign and publish iOS apps from Windows, Linux or macOS with no Mac and no Xcode.
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Related
Categories
Questions about Xcode Build Simulator
What does Xcode Build Simulator do?
This skill should be used when the user invokes "/xcode-build-simulator" to build the current Xcode project for the iOS Simulator (generic destination). Xcode Build Simulator is an agent skill from xenodium/emacs-skills. This skill should be used when the user invokes "/xcode-build-simulator" to build the current Xcode project for the iOS Simulator (generic destination).
When should I use Xcode Build Simulator?
Xcode Build Simulator fits situations like: invokes /xcode-build-simulator to build the current Xcode project for the iOS Simulator (generic destination); tasks that involve iOS development.
How do I install Xcode Build Simulator in Claude Code?
Run `npx skills add xenodium/emacs-skills --skill xcode-build-simulator -a claude-code`. Or copy the skill folder (skills/xcode-build-simulator in xenodium/emacs-skills) into .claude/skills/xcode-build-simulator in your project. Claude Code loads it when a task matches its description.
How do I install Xcode Build Simulator in Codex?
Run `npx skills add xenodium/emacs-skills --skill xcode-build-simulator -a codex`. Or copy the skill folder (skills/xcode-build-simulator in xenodium/emacs-skills) into .agents/skills/xcode-build-simulator in your project. Codex loads it when a task matches its description.
Can I use Xcode Build Simulator 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 xenodium/emacs-skills --skill xcode-build-simulator -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/xcode-build-simulator, .gemini/skills/xcode-build-simulator, .github/skills/xcode-build-simulator and .opencode/skills/xcode-build-simulator in your project.
What does Xcode Build Simulator need to run?
Going by SKILL.md and its folder, Xcode Build Simulator needs the command-line tools its instructions call (xcodebuild).
Does Xcode Build Simulator 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 Xcode Build Simulator 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 Xcode Build Simulator use?
No licence was found for Xcode Build Simulator or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Xcode Build Simulator use?
About 425 tokens (SKILL.md is roughly 1.7k 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 Xcode Build Simulator?
Skills that share tags, products or a category with Xcode Build Simulator: Orca iOS Simulator Control (stablyai/orca, 87k stars), Apple Crash Log .NET Symbolication (dotnet/skills, 5.6k stars), Update Swiftui APIs (AvdLee/SwiftUI-Agent-Skill, 3.7k stars) and iOS Simulator Skill (conorluddy/ios-simulator-skill, 1.3k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Xcode Build Simulator?
xenodium (a GitHub user) maintains it in xenodium/emacs-skills, which has 142 GitHub stars. The repository holds 19 skills in this directory. The repository was last updated on July 21, 2026.
Source: xenodium/emacs-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.