MCP Screen Operation Server

A modern Model Context Protocol (MCP) server for cross-platform screen and window operations, built with FastMCP and supporting multiple transport protocols.

Features

Screen Operations

• Get information about connected displays
• Capture screenshots of specific monitors
• Capture stitched screenshots of all monitors

Window Operations

• Get a list of all open windows
• Capture screenshots of specific windows

Automation Operations

• Mouse movement, clicking, dragging, and scrolling
• Keyboard typing, key presses, and hotkey combinations
• Get current mouse position and screen information

Transport Protocols

• STDIO (default) - For local tools and Claude Desktop integration
• SSE (Server-Sent Events) - For web-based deployments
• Streamable HTTP (recommended) - Modern HTTP-based protocol

Platform Support

• Linux (X11 via python-xlib)
• Windows (Win32 API via pywin32)
• macOS (Quartz via PyObjC)

Architecture

The server uses a clean, platform-agnostic architecture:

• FastMCP Integration: Modern MCP server framework with multi-transport support
• Platform Abstraction: WindowManager interface with platform-specific implementations
• Dependency Management: Automatic platform-specific dependency checking
• Clean Separation: Operations layer independent of platform details

Installation

Quick Install from PyPI

Once published to PyPI, you can install and run easily:

# Install with uv (recommended)
uvx mcp-screen-operation  # Run directly without installation

# Or install with pip
pip install mcp-screen-operation

Install from Source

Prerequisites

Create and activate a virtual environment:

python -m venv venv

# On Windows
.\venv\Scripts\Activate.ps1

# On Linux/macOS
source venv/bin/activate

Basic Installation

Install the project in editable mode with platform-specific dependencies:

For Production Use

pip install -e "."

For Development

Install with development tools included:

pip install -e ".[dev]"

Dependencies

Core dependencies (automatically installed):

• fastmcp>=2.3.0 - Modern MCP server framework
• mcp>=1.9.4 - Model Context Protocol library
• mss - Cross-platform screenshot library
• Pillow - Image processing
• pyautogui - Cross-platform automation library

Platform-specific dependencies:

• Linux: python-xlib - X11 window management
• Windows: pywin32 - Windows API access
• macOS: pyobjc-framework-Quartz, pyobjc-framework-Cocoa - macOS window management

Development dependencies (installed with [dev]):

• pylint - Code linting
• pylint-plugin-utils - Pylint utilities
• pylint-mcp - MCP-specific linting rules
• black - Code formatting

Installation Examples

Quick Start (Production)

# Clone and install for your platform
git clone <repository-url>
cd mcp-screen-operation
python -m venv venv
.\venv\Scripts\Activate.ps1  # Windows
pip install -e "."

Developer Setup

# Clone and setup development environment
git clone <repository-url>
cd mcp-screen-operation
python -m venv venv
.\venv\Scripts\Activate.ps1  # Windows
pip install -e ".[dev]"

# Run development tools
black src/
pylint src/

Usage

Command Line Options

mcp-screen-operation --help

usage: mcp-screen-operation [-h] [--transport {stdio,sse,streamable-http}]
                            [--port PORT] [--host HOST]

MCP Screen Operation Server

options:
  -h, --help            show this help message and exit
  --transport {stdio,sse,streamable-http}
                        Transport protocol to use (default: stdio)
  --port PORT           Port for HTTP-based transports (default: 8205)
  --host HOST           Host for HTTP-based transports (default: 127.0.0.1)

Command Examples

# Check version
mcp-screen-operation --version

Running with Different Transports

STDIO (Default)

Perfect for local tools and Claude Desktop integration:

mcp-screen-operation
# or explicitly
mcp-screen-operation --transport stdio

Streamable HTTP (Recommended for Web)

Modern HTTP-based protocol for web deployments:

mcp-screen-operation --transport streamable-http --port 8205

Access at: http://localhost:8205/mcp

SSE (Legacy Web Support)

Server-Sent Events for legacy web deployments:

mcp-screen-operation --transport sse --port 8205

Access at: http://localhost:8205/sse

Development Mode

Use FastMCP's development mode with inspector:

fastmcp dev src/screen_operation_server/main.py

MCP Inspector

You can use the MCP Inspector to test and debug your MCP server interactively:

# Install and run MCP Inspector
npx @modelcontextprotocol/inspector

The MCP Inspector provides a web-based interface to:

• Test all available tools
• View tool schemas and documentation
• Debug server responses
• Monitor server logs

Available Tools

Screen Information

• get_screen_info(): Retrieves information about connected displays
  • Returns: Monitor count and details (resolution, position) for each display

Screen Capture

• capture_screen_by_number(monitor_number: int): Captures a screenshot of the specified monitor

  • Args: monitor_number - The monitor to capture (0-based index)
  • Returns: Base64-encoded PNG image

• capture_all_screens(): Captures all connected monitors and stitches them into a single image

  • Returns: Base64-encoded PNG image of all screens combined

Window Management

• get_window_list(): Retrieves a list of currently open windows

  • Returns: List of windows with ID, title, position, and dimensions

• capture_window(window_id: int): Captures a screenshot of the specified window

  • Args: window_id - The window ID to capture
  • Returns: Base64-encoded PNG image of the window

Mouse Automation

• mouse_move(x: int, y: int, duration: float = 0.0): Moves the mouse cursor

  • Args: x, y - Target coordinates; duration - Movement duration in seconds
  • Returns: New mouse position

• mouse_click(x: int, y: int, button: str = "left", clicks: int = 1): Clicks the mouse

  • Args: x, y - Click coordinates; button - Mouse button ('left', 'right', 'middle'); clicks - Number of clicks
  • Returns: Click information

• mouse_drag(start_x: int, start_y: int, end_x: int, end_y: int, duration: float = 0.5): Drags the mouse

  • Args: Start and end coordinates; duration - Drag duration
  • Returns: Drag operation details

• mouse_scroll(clicks: int, x: int = None, y: int = None): Scrolls the mouse wheel

  • Args: clicks - Scroll amount (positive=up, negative=down); Optional coordinates
  • Returns: Scroll information

• get_mouse_position(): Gets current mouse position

  • Returns: Current coordinates and screen size

Keyboard Automation

• keyboard_type(text: str, interval: float = 0.0): Types text

  • Args: text - Text to type; interval - Delay between keystrokes
  • Returns: Typing information

• keyboard_press(key: str): Presses a single key

  • Args: key - Key name (e.g., 'enter', 'tab', 'space', 'a')
  • Returns: Key press information

• keyboard_hotkey(keys: str): Presses hotkey combination

  • Args: keys - Keys to press together, separated by '+' (e.g., 'ctrl+c')
  • Returns: Hotkey information

Integration Examples

Claude Desktop Integration

Add to your Claude Desktop MCP configuration:

{
  "mcpServers": {
    "screen-operation": {
      "command": "mcp-screen-operation",
      "args": []
    }
  }
}

Or after PyPI publication, use uvx for automatic installation:

{
  "mcpServers": {
    "screen-operation": {
      "command": "uvx",
      "args": ["mcp-screen-operation"]
    }
  }
}

Web Application Integration

For Streamable HTTP:

// Connect to the MCP server
const response = await fetch('http://localhost:8205/mcp', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    jsonrpc: '2.0',
    id: 1,
    method: 'tools/call',
    params: {
      name: 'get_screen_info',
      arguments: {}
    }
  })
});

FastMCP Client Integration

import asyncio
from fastmcp import FastMCP

async def main():
    # Connect to HTTP server
    client = FastMCP.create_client('http://localhost:8205/mcp')

    # Get screen info
    result = await client.call_tool('get_screen_info', {})
    print(result)

asyncio.run(main())

Error Handling

The server automatically checks for platform-specific dependencies on startup:

• Linux: Validates python-xlib availability
• Windows: Validates pywin32 availability
• macOS: Validates PyObjC availability

If dependencies are missing, the server will display installation instructions and exit.

Development

Development Environment Setup

1. Clone and setup environment:

git clone <repository-url>
cd mcp-screen-operation
python -m venv venv

# Activate virtual environment
# Windows:
.\venv\Scripts\Activate.ps1
# Linux/macOS:
source venv/bin/activate

# Install in development mode
pip install -e ".[dev]"

2. Code formatting and linting:

# Format code
black src/

# Run linter
pylint src/

3. Testing during development:

# Test the server
mcp-screen-operation --help

# Test with different transports
mcp-screen-operation --transport stdio
mcp-screen-operation --transport sse --port 8205
mcp-screen-operation --transport streamable-http --port 8205