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iOS Simulator MCP Server: Lag-Free Control & Seamless Dev Magic 🚀 - MCP Implementation

iOS Simulator MCP Server: Lag-Free Control & Seamless Dev Magic 🚀

iOS Simulator MCP Server: Your dev sidekick for lag-free control. Bye-bye clunky setups – hello seamless magic. 🚀

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About iOS Simulator MCP Server

What is iOS Simulator MCP Server: Lag-Free Control & Seamless Dev Magic 🚀?

Designed for developers and QA engineers, the iOS Simulator MCP Server is a Model Context Protocol (MCP) solution enabling real-time, lag-free interaction with iOS simulators. This tool acts as a bridge between your development environment and Apple's simulator ecosystem, offering precise control over UI elements, automated testing workflows, and seamless integration with tools like Cursor. Think of it as your secret weapon for debugging, testing, and validating app behavior without manual hassle.

How to Use iOS Simulator MCP Server: Lag-Free Control & Seamless Dev Magic 🚀?

Activation is straightforward but powerful:

  1. Install via npx or local build (see setup details)
  2. Configure Cursor with the server details
  3. Execute commands like "Tap on x=250,y=400" directly in your workflow
  4. Automate QA steps or debug UI inconsistencies instantly

Pro tip: Use agent mode to turn your development environment into an automated QA powerhouse.

iOS Simulator MCP Server Features

Key Features of iOS Simulator MCP Server: Lag-Free Control & Seamless Dev Magic 🚀?

  • Instant UI Control: Tap, swipe, type, and inspect elements with pixel-perfect accuracy
  • Context Awareness: Get real-time descriptions of all accessibility elements on screen
  • Visual Validation: Capture screenshots/videos automatically for bug reporting
  • Developer Workflow Integration: Seamlessly plug into CI/CD pipelines or IDEs like Cursor
  • Effortless Setup: Built on battle-tested tools like IDB and Node.js

Use Cases of iOS Simulator MCP Server: Lag-Free Control & Seamless Dev Magic 🚀?

Primarily used for:

  • Rapid QA: Validate UI changes immediately after feature implementation
  • Automated Testing: Script repetitive interactions (e.g., form submissions, navigation flows)
  • Debugging: Isolate UI issues by inspecting element properties at specific coordinates
  • Documentation: Generate visual records of app states during development

Example workflow: Run a command like "Describe elements at x=300,y=350"

iOS Simulator MCP Server FAQ

FAQ from iOS Simulator MCP Server: Lag-Free Control & Seamless Dev Magic 🚀?

Does this work on Windows?
No – requires macOS due to iOS simulator dependencies, but that's the trade-off for native Apple ecosystem integration.
Why use IDB?
Facebook's IDB tool provides rock-solid simulator control – we leverage its power while adding higher-level abstraction.
Can I customize commands?
Absolutely! The MCP interface allows extension with custom logic tailored to your project's needs.
What about performance?
Optimized for zero-latency interactions – perfect for CI/CD pipelines where speed and reliability are critical.

Content

iOS Simulator MCP Server

NPM Version

A Model Context Protocol (MCP) server for interacting with iOS simulators. This server allows you to interact with iOS simulators by getting information about them, controlling UI interactions, and inspecting UI elements.

https://github.com/user-attachments/assets/453ebe7b-cc93-4ac2-b08d-0f8ac8339ad3

Features

  • Get the ID of the currently booted iOS simulator
  • Interact with the simulator UI:
    • Describe all accessibility elements on screen
    • Tap on screen coordinates
    • Input text
    • Swipe between coordinates
    • Get information about UI elements at specific coordinates
    • Take screenshots of the simulator screen

💡 Use Case: QA Step in Agent Mode

This MCP can be used effectively in agent mode as a Quality Assurance step immediately after implementing features, ensuring UI consistency and correct behavior.

How to Use

After a feature implementation:

  1. Activate agent mode in Cursor.
  2. Use the prompts below to quickly validate and document UI interactions.

Example Prompts

  • Verify UI Elements:

    Verify all accessibility elements on the current screen

  • Confirm Text Input:

    Enter "QA Test" into the text input field and confirm the input is correct

  • Check Tap Response:

    Tap on coordinates x=250, y=400 and verify the expected element is triggered

  • Validate Swipe Action:

    Swipe from x=150, y=600 to x=150, y=100 and confirm correct behavior

  • Detailed Element Check:

    Describe the UI element at position x=300, y=350 to ensure proper labeling and functionality

  • Take Screenshot:

    Take a screenshot of the current simulator screen and save it to my_screenshot.png

  • Record Video:

    Start recording a video of the simulator screen (saves to ~/Downloads/simulator_recording_$DATE.mp4 by default)

  • Stop Recording:

    Stop the current simulator screen recording

Prerequisites

  • Node.js
  • macOS (as iOS simulators are only available on macOS)
  • Xcode and iOS simulators installed
  • Facebook IDB tool (see install guide)

Installation

Option 1: Using NPX (Recommended)

  1. Edit your Cursor MCP configuration:

    cursor ~/.cursor/mcp.json

  2. Add the iOS simulator server to your configuration:

    {
    "mcpServers": {
    "ios-simulator": {
    "command": "npx",
    "args": ["-y", "ios-simulator-mcp"]
    }
    }

}
  1. Restart Cursor.

Option 2: Local Development

  1. Clone this repository:

    git clone https://github.com/joshuayoes/ios-simulator-mcp

cd ios-simulator-mcp

  1. Install dependencies:

    npm install

  2. Build the project:

    npm run build

  3. Edit your Cursor MCP configuration:

    cursor ~/.cursor/mcp.json

  4. Add the iOS simulator server to your configuration:

    {
    "mcpServers": {
    "ios-simulator": {
    "command": "node",
    "args": ["/path/to/your/ios-simulator-mcp/build/index.js"]
    }
    }

}

Replace "/path/to/your" with the actual path to your project directory.

  1. Restart Cursor.

License

MIT

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