How do I install the IOS Simulator skill?

Run npx skillmds@latest add majiayu000/ios-simulator in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is IOS Simulator safe to use?

This skill has not completed SkillMD's automated safety review yet. Independent scanners report: SkillSpector: PASS, Skill Scanner: PASS. Capability flags: docs only. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with IOS Simulator?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is IOS Simulator free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published IOS Simulator?

majiayu000 (@majiayu000) published this skill. Their other Agent Skills are listed on their SkillMD profile.

IOS Simulator by majiayu000 — Agent Skill

Name: IOS Simulator
Rating: 4.2 (5 reviews)
Author: majiayu000

File contents

iOS Simulator Deployment & Debugging

This is an action skill. Run commands, don't just explain them.

Quick Commands

Build and run on simulator:

cd apps/ios && ./scripts/run.sh

This script:

Builds the app (always rebuilds to pick up code changes)
Boots iPhone 17 Pro simulator
Installs and launches the app

Debugging / Log Streaming

Important: print() does NOT show in Console.app. Use NSLog() or os_log instead.

Stream app logs in terminal:

xcrun simctl spawn booted log stream --predicate 'eventMessage CONTAINS "[YourTag]"' --level debug

Stream all app logs:

xcrun simctl spawn booted log stream --predicate 'subsystem == "com.bytespell.shella"' --level debug

Check if app is running:

xcrun simctl spawn booted launchctl list | grep shella

Clean Build

If you suspect stale code is being used:

cd apps/ios && rm -rf .build && ./scripts/run.sh

Troubleshooting

App doesn't reflect code changes:

The run.sh script now always rebuilds, but if issues persist, do a clean build (see above)

Logs not appearing:

print() statements don't show in Console.app - use NSLog("message") or os_log
Make sure Console.app is filtering by "Simulator" in the sidebar
Enable "Include Info Messages" and "Include Debug Messages" in Console.app's Action menu

Simulator won't boot:

xcrun simctl shutdown all
xcrun simctl boot "iPhone 17 Pro"

Kill and restart app:

xcrun simctl terminate booted com.bytespell.shella
xcrun simctl launch booted com.bytespell.shella

Typical Flow

User: "run on simulator" / "test this on iOS" / "build and run"

Run the build+deploy script:

cd apps/ios && ./scripts/run.sh

If user needs logs, start streaming:

xcrun simctl spawn booted log stream --predicate 'eventMessage CONTAINS "[SomeTag]"' --level debug

For debugging, remind user that print() won't show - they need NSLog().

---name: ios-simulatordescription: Build and run iOS app on simulator. Use when user asks to run on simulator, test on simulator, or debug iOS app locally. Handles building, deploying, and log streaming.--- # iOS Simulator Deployment & Debugging **This is an action skill. Run commands, don't just explain them.** ## Quick Commands **Build and run on simulator:** ```bash cd apps/ios && ./scripts/run.sh ``` This script: 1. Builds the app (always rebuilds to pick up code changes) 2. Boots iPhone 17 Pro simulator 3. Installs and launches the app ## Debugging / Log Streaming **Important:** `print()` does NOT show in Console.app. Use `NSLog()` or `os_log` instead. **Stream app logs in terminal:** ```bash xcrun simctl spawn booted log stream --predicate 'eventMessage CONTAINS "[YourTag]"' --level debug ``` **Stream all app logs:** ```bash xcrun simctl spawn booted log stream --predicate 'subsystem == "com.bytespell.shella"' --level debug ``` **Check if app is running:** ```bash xcrun simctl spawn booted launchctl list | grep shella ``` ## Clean Build If you suspect stale code is being used: ```bash cd apps/ios && rm -rf .build && ./scripts/run.sh ``` ## Troubleshooting **App doesn't reflect code changes:** - The `run.sh` script now always rebuilds, but if issues persist, do a clean build (see above) **Logs not appearing:** - `print()` statements don't show in Console.app - use `NSLog("message")` or `os_log` - Make sure Console.app is filtering by "Simulator" in the sidebar - Enable "Include Info Messages" and "Include Debug Messages" in Console.app's Action menu **Simulator won't boot:** ```bash xcrun simctl shutdown all xcrun simctl boot "iPhone 17 Pro" ``` **Kill and restart app:** ```bash xcrun simctl terminate booted com.bytespell.shella xcrun simctl launch booted com.bytespell.shella ``` ## Typical Flow User: "run on simulator" / "test this on iOS" / "build and run" 1. Run the build+deploy script: ```bash cd apps/ios && ./scripts/run.sh ``` 2. If user needs logs, start streaming: ```bash xcrun simctl spawn booted log stream --predicate 'eventMessage CONTAINS "[SomeTag]"' --level debug ``` 3. For debugging, remind user that `print()` won't show - they need `NSLog()`.

Frequently asked questions

IOS Simulator