ios-simulator-skill MCP — Use Cases, Install & Live Demo

Why use it

Key features

xcodebuild wrapper with single-line build summaries — saves huge amounts of context
Accessibility-first simulator navigation — finds elements by label, not pixel position
22 purpose-built scripts for build/test/run/simulate workflows
Auto-compressed screenshots so image tokens stay manageable
Real-time log tailing with severity filtering

Live Demo

What it looks like in practice

ios-simulator-skill.replay ▶ ready

0/0

Install

Pick your client

~/Library/Application Support/Claude/claude_desktop_config.json · Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "ios-simulator-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/conorluddy/ios-simulator-skill",
        "~/.claude/skills/ios-simulator-skill"
      ],
      "_inferred": true
    }
  }
}

Open Claude Desktop → Settings → Developer → Edit Config. Restart after saving.

~/.cursor/mcp.json · .cursor/mcp.json

{
  "mcpServers": {
    "ios-simulator-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/conorluddy/ios-simulator-skill",
        "~/.claude/skills/ios-simulator-skill"
      ],
      "_inferred": true
    }
  }
}

Cursor uses the same mcpServers schema as Claude Desktop. Project config wins over global.

VS Code → Cline → MCP Servers → Edit

{
  "mcpServers": {
    "ios-simulator-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/conorluddy/ios-simulator-skill",
        "~/.claude/skills/ios-simulator-skill"
      ],
      "_inferred": true
    }
  }
}

Click the MCP Servers icon in the Cline sidebar, then "Edit Configuration".

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "ios-simulator-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/conorluddy/ios-simulator-skill",
        "~/.claude/skills/ios-simulator-skill"
      ],
      "_inferred": true
    }
  }
}

Same shape as Claude Desktop. Restart Windsurf to pick up changes.

~/.continue/config.json

{
  "mcpServers": [
    {
      "name": "ios-simulator-skill",
      "command": "git",
      "args": [
        "clone",
        "https://github.com/conorluddy/ios-simulator-skill",
        "~/.claude/skills/ios-simulator-skill"
      ]
    }
  ]
}

Continue uses an array of server objects rather than a map.

~/.config/zed/settings.json

{
  "context_servers": {
    "ios-simulator-skill": {
      "command": {
        "path": "git",
        "args": [
          "clone",
          "https://github.com/conorluddy/ios-simulator-skill",
          "~/.claude/skills/ios-simulator-skill"
        ]
      }
    }
  }
}

Add to context_servers. Zed hot-reloads on save.

claude mcp add ios-simulator-skill -- git clone https://github.com/conorluddy/ios-simulator-skill ~/.claude/skills/ios-simulator-skill

One-liner. Verify with claude mcp list. Remove with claude mcp remove.

Use Cases

Real-world ways to use ios-simulator-skill

Build, run, and screenshot the current flow

👤 iOS devs using Claude Code to iterate ⏱ ~5 min beginner

When to use: You changed a view and want to see it live without leaving the chat.

Prerequisites

Xcode + simulator installed — Standard macOS iOS dev setup

Flow

Ask Claude to build and run

Use ios-simulator-skill. Build MyApp scheme for iPhone 16, launch, navigate to Settings, screenshot.✓ Copied

→ Compact build summary, then the screenshot
Iterate

I tweaked the padding — rebuild and re-screenshot.✓ Copied

→ Fast turn with minimal token overhead

Outcome: Tight build-iterate-view loop in Claude Code.

Pitfalls

Scheme name typo causes unclear error — Skill returns a compact list of available schemes on mismatch

Combine with: filesystem

Drive a scripted UI flow for smoke testing

👤 iOS devs and QA ⏱ ~15 min intermediate

When to use: You want to verify a critical flow without writing full XCUITest scaffolding.

Flow

Describe the flow

Launch the app, tap 'Sign in', enter creds, tap the first row in the list, screenshot.✓ Copied

→ Claude uses accessibility labels to drive each step
Check WCAG compliance

Now run the accessibility audit on the current screen.✓ Copied

→ WCAG findings with fix suggestions

Outcome: A working smoke flow plus an a11y pass.

Pitfalls

Flow breaks when a label changes — Labels are more stable than coordinates, but still review after big UI refactors

Tail logs while reproducing a bug

👤 iOS devs chasing a flaky issue ⏱ ~10 min intermediate

When to use: A bug only repros in the simulator and you want the relevant logs.

Flow

Reproduce with filtered logs

Launch the app, tap through the crashing flow, tail logs filtered to error+warning.✓ Copied

→ Claude returns a trimmed log bundle and highlights the likely cause

Outcome: A targeted log excerpt and a hypothesis for the bug.

Pitfalls

Logs too noisy if severity filter not set — Default to error+warning; raise to info only when debugging

Combinations

Pair with other MCPs for X10 leverage

ios-simulator-skill + filesystem

Skill runs the build; filesystem reads/writes the sources

Edit SettingsView.swift, then build and screenshot.✓ Copied

ios-simulator-skill + github

Reproduce an issue from a GitHub bug report in the simulator

Read issue #42, reproduce the steps in the simulator, attach screenshot to a comment.✓ Copied

Tools

What this MCP exposes

Tool	Inputs	When to call
xcodebuild wrapper	scheme, destination	Any build request
Simulator driver (accessibility APIs)	element label/role + action	UI automation in the simulator
Screenshot capture	none (current screen)	Visual verification
Log tailing	severity filter, duration	Debugging runtime issues
Device lifecycle	boot/shutdown/create/reset	Fresh simulator state needed
Accessibility audit	current screen	A11y review

Cost & Limits

What this costs to run

API quota: None
Tokens per call: Very low — compact build summaries + compressed screenshots are the main design goal
Monetary: Free — skill is local
Tip: Keep screenshots at default compression; full-res screens eat context fast.

Security

Permissions, secrets, blast radius

Credential storage: No credentials in the skill. App-side secrets stay in your build config.

Data egress: None — everything runs on local simulators

Simulators have access to your keychain if you've configured it — be careful with credentials during automation.

Troubleshooting

Common errors and fixes

'No such scheme'

Skill lists available schemes on mismatch; pick the exact name.

Verify: xcodebuild -list -project MyApp.xcodeproj

Accessibility label not found

Add accessibilityIdentifier to the SwiftUI view — it's more stable than the visible label.

Simulator stuck booting

Use the device-lifecycle reset command; then re-boot.

Verify: xcrun simctl list

Alternatives

ios-simulator-skill vs others

Alternative	When to use it instead	Tradeoff
Direct xcodebuild + simctl	You don't mind the token bloat from raw output	No abstraction; verbose
XcodeBuildMCP	You prefer an MCP server with structured tools	MCP route; this skill is local scripts

More

Resources

📖 Read the official README on GitHub

🐙 Browse open issues

🔍 Browse all 400+ MCP servers and Skills