Xcode Build Simulator

Community

xenodium

xcode-build-simulator

This skill should be used when the user invokes "/xcode-build-simulator" to build the current Xcode project for the iOS Simulator (generic destination).

Overview

Publisher	xenodium
Repository	`emacs-skills`
Skill name	`xcode-build-simulator`
Stars	148
Forks	18
Bundled files	Instructions only
Links	Skill source Repository

Markdown instructions
A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.
Works with any LLM
AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.
Self-contained
Everything the model needs lives in the instructions — no extra files to sync.
Open source
Published by xenodium on GitHub. Read the source before you install it.

Installation

Install the Xcode Build Simulator AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

Open the app and go to Plugins → Skills.
Choose "Install from GitHub".
Paste the skill folder URL below and confirm.
https://github.com/xenodium/emacs-skills/tree/main/skills/xcode-build-simulator
Enable the skill in any chat where you want it available.

Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills

git clone --depth 1 https://github.com/xenodium/emacs-skills.git /tmp/emacs-skills
mkdir -p .claude/skills
cp -r /tmp/emacs-skills/skills/xcode-build-simulator .claude/skills/xcode-build-simulator

Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Xcode Build Simulator in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Xcode Build Simulator on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Xcode Build Simulator is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

Loaded only when it is needed
The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.
Switch models mid-chat
Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

Build Xcode project for iOS Simulator

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.

How to build

The shared agent-skill-xcode.el lives in the sibling xcode-shared directory at skills/xcode-shared/agent-skill-xcode.el in the emacs-skills plugin. All four /xcode-* skills load it from there.

sh
emacsclient --eval "(progn (load \"/path/to/skills/xcode-shared/agent-skill-xcode.el\" nil t) (agent-skill-xcode-build-simulator :project-dir \"$(pwd)\"))"

The function:

Locates the first .xcworkspace (preferred) or .xcodeproj in :project-dir.
Picks a scheme via xcodebuild -list -json: prefers the scheme matching the project basename, else the first non-test scheme.
Runs xcodebuild build -destination 'generic/platform=iOS Simulator'.
Returns "Build succeeded: ..." on success, or "Build FAILED: ...\n--- last 40 lines ---\n..." on failure.

Rules

Pass the agent's current working directory as :project-dir via $(pwd). Do not assume a hard-coded path.
Run via the Bash tool with a single emacsclient --eval invocation.
Report the returned status string to the user verbatim on failure (truncated tail is already included).
On success, a one-line confirmation is enough.
If the user wants to also run the app, suggest /xcode-run-simulator.

Frequently asked questions

What does the Xcode Build Simulator AI skill 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).

Why use Xcode Build Simulator on TypingMind?

Because you install it once and use it with any model. Xcode Build Simulator is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Xcode Build Simulator in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/xenodium/emacs-skills/tree/main/skills/xcode-build-simulator. TypingMind reads its SKILL.md and installs it as a skill you can enable per chat.

Which AI models can use Xcode Build Simulator?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Xcode Build Simulator?

As many as you like. As long as a model supports skills, you can use Xcode Build Simulator with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Xcode Build Simulator AI skill free?

It is published on GitHub by xenodium. Check the repository for licensing terms. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

Build Xcode project for iOS Simulator

How to build

Rules

Frequently asked questions

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