ax-simulator

ax-simulator is a skill for Claude Code from Kasempiternal/axiom-v2. It costs 36 tokens per session (2,236 once invoked), scanned A, original, MIT.

A guide to managing Apple app simulators from the command line, including starting devices and controlling installed apps.

In plain words
What is it for?
Use it to list, boot, reset, delete, install, launch, or stop simulator apps, and to capture screenshots, videos, deep links, or push notifications.
Why use it?
It removes repetitive manual steps when testing an app on simulated iPhones or other Apple devices.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the axiom plugin — 40 skills, 8 commands, 12 agents, 2 hooks shipped together

Good fit Use it to list, boot, reset, delete, install, launch, or stop simulator apps, and to capture screenshots, videos, deep links, or push notifications.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/kasempiternal/axiom-v2/ax-simulator
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Kasempiternal/axiom-v2 --skill ax-simulator
Clone the repo
git clone --depth 1 https://github.com/Kasempiternal/axiom-v2

Made for: Claude Code.

Or install axiom, the plugin that ships this one along with the rest of its 40 skills, 8 commands, 12 agents, 2 hooks.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for ax-simulator

README.md
[![agentmods](https://agentmods.dev/badge/skills/kasempiternal/axiom-v2/ax-simulator/github.svg)](https://agentmods.dev/skills/kasempiternal/axiom-v2/ax-simulator)
Your own site
<a href="https://agentmods.dev/skills/kasempiternal/axiom-v2/ax-simulator"><img src="https://agentmods.dev/badge/skills/kasempiternal/axiom-v2/ax-simulator/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for ax-simulator

Your own site · 80×15
<a href="https://agentmods.dev/skills/kasempiternal/axiom-v2/ax-simulator"><img src="https://agentmods.dev/badge/skills/kasempiternal/axiom-v2/ax-simulator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,236 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00036 $0.02236
Opus 5 $0.00018 $0.01118
Sonnet 5 $0.00007 $0.00447
Haiku 4.5 $0.00004 $0.00224

Measured 9d ago against content hash 6f00181ec9b6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

ax-simulator scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

axiom-plugin/skills/ax-simulator/SKILL.md · 292 lines

How it starts

The opening of the file, as written. The whole thing — 292 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Simulator Management

Quick Patterns

simctl Device Lifecycle

# List available devices
xcrun simctl list devices

# Boot a simulator
xcrun simctl boot "iPhone 16"

# Get booted simulator UDID
UDID=$(xcrun simctl list devices -j | jq -r '.devices | to_entries[] | .value[] | select(.state == "Booted") | .udid' | head -1)

# Open Simulator app
open -a Simulator

# Shutdown
xcrun simctl shutdown $UDID

# Erase (reset to factory)
xcrun simctl erase $UDID

# Delete
xcrun simctl delete $UDID

simctl App Management

# Install app
xcrun simctl install $UDID /path/to/MyApp.app

# Launch app
xcrun simctl launch $UDID com.example.myapp

# Launch with arguments
xcrun simctl launch $UDID com.example.myapp --uitesting --mock-data

# Terminate app
xcrun simctl terminate $UDID com.example.myapp

# Uninstall app
xcrun simctl uninstall $UDID com.example.myapp

simctl Utilities

# Screenshot
xcrun simctl io $UDID screenshot /tmp/screenshot.png

# Video recording (Ctrl+C to stop)
xcrun simctl io $UDID recordVideo /tmp/recording.mp4

# Open URL / deep link
xcrun simctl openurl $UDID "myapp://path/to/screen"

# Send push notification
xcrun simctl push $UDID com.example.myapp /tmp/push.json

# Set status bar (clean screenshots)
xcrun simctl status_bar $UDID override --time "9:41" --batteryState charged --batteryLevel 100

# Grant permissions
xcrun simctl privacy $UDID grant photos com.example.myapp
xcrun simctl privacy $UDID grant camera com.example.myapp
xcrun simctl privacy $UDID grant location-always com.example.myapp

# Add photos/videos to library
xcrun simctl addmedia $UDID /path/to/photo.jpg

# Set location
xcrun simctl location $UDID set 37.7749,-122.4194

# Get app container path
xcrun simctl get_app_container $UDID com.example.myapp data

Push Notification Payload

{
  "aps": {
    "alert": {
      "title": "Test Notification",
      "body": "This is a test push notification"
    },
    "badge": 1,
    "sound": "default"
  }
}
xcrun simctl push $UDID com.example.myapp /tmp/push.json

Read the full file on GitHub · 292 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 292 lines · 36 tokens per session scan A 6f00181ec9b6

Subscribe to this mod's changes

ax-simulator is a skill published in the GitHub repository Kasempiternal/axiom-v2 (4 stars, last pushed 6mo ago), licensed MIT. It adds 36 tokens to every session and 2,236 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

Other skills, from other repositories

workflow-audit

Systematic UI workflow auditing for SwiftUI applications. Discovers entry points, traces user flows, detects dead ends and broken promises, audits data wiring, evaluates from user perspective. Triggers: "workflow audit", "audit flows", "find dead ends", "check navigation".

Terryc21/workflow-audit · 59 tokens

swift-expert

Expert-level Swift development for iOS, macOS with SwiftUI, Combine, and modern Swift 5.9+. Use when the user mentions iOS, macOS, SwiftUI, Combine, async await, or Apple platforms, or when the task involves Modern Swift Features, Basics and Optionals, Functions and Closures, or Structs and Classes.

personamanagmentlayer/pcl · 76 tokens

ios-expert

Expert in iOS development with SwiftUI, UIKit, Combine, and Apple ecosystem integration. Use when the user mentions mobile, Swift, SwiftUI, UIKit, Apple platforms, or Xcode, or when the task involves iOS App Architecture, SwiftUI Fundamentals, UIKit Essentials, or Combine Framework.

personamanagmentlayer/pcl · 64 tokens

swift-focusengine-pro

Reviews, writes, and fixes focus management code for all Apple platforms (tvOS, iOS/iPadOS, watchOS, visionOS, macOS), covering SwiftUI, UIKit, AppKit, and RealityKit. Use when reading, writing, or reviewing apps that handle focus, hover, key view loops, or Digital Crown navigation.

mhaviv/Swift-FocusEngine-Agent-Skill · 74 tokens

swift-architecture-skill

Swift iOS architecture guidance and playbooks for MVVM, MVI, TCA, Clean Architecture, VIPER, MVP, Coordinator, and Reactive patterns. Use when designing, implementing, refactoring, or reviewing the architecture of a SwiftUI or UIKit feature, module, or codebase.

efremidze/swift-architecture-skill · 65 tokens

antigravity-root

Enterprise-grade iOS development workflow for TTBaseUIKit-powered apps. Cross-functional product analysis | MVVM-C Architecture | UIKit + SwiftUI | TTViewCodable | TTBaseSUI | xcodebuild CLI Verification | Zero Regression | iOS 14+.

tqtuan1201/TTBaseUIKit · 57 tokens