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MCP-ADB

A Model Context Protocol (MCP) server that provides integration with Android Debug Bridge (ADB) for AI assistants to interact with Android devices.

Features

• Screenshot Capture: Take screenshots of connected Android devices with automatic resizing
• Base64 Image Data: Receive screenshot data directly as base64-encoded strings
• Key Event Control: Send key events to Android devices (navigation, back, home)
• Multiple Device Support: Target specific devices when multiple devices are connected
• Device Listing: List all connected Android devices as resources
• Resource Access: Access screenshots and device information via resource URIs

Prerequisites

• Node.js (v16 or higher recommended)
• Android Debug Bridge (ADB) installed and available in PATH or configured via ADB_PATH environment variable
• Connected Android device(s) with USB debugging enabled

Installation

# Clone the repository
git clone https://github.com/isseikz/mcp-adb.git
cd mcp-adb

# Install dependencies
npm install

# Build the project
npm run build

Usage

Using with Claude Desktop

To use this MCP server with Claude Desktop add mcp-adb into claude_desktop_config.json, which can be found in the Claude Desktop installation directory or Claude - Settings - Developer - Edit Config

Here is an example of how to configure the claude_desktop_config.json file:

{
  "mcpServers": {
    "mcp-adb": {
      "command": "node",
      "args": ["/path/to/mcp-adb/build/index.js"],
      "env": {
        "ADB_PATH": "/path/to/adb"
      }
    }
  }
}

```json
{
  "mcpServers": {
    "mcp-adb": {
      "command": "node",
      "args": ["/path/to/mcp-adb/build/index.js"],
      "env": {
        "ADB_PATH": "/path/to/adb"
      }
    }
  }
}

Available Tools

Screenshot Tool

Captures a screenshot from a connected Android device and automatically resizes it to 640px width.

Parameters:

• deviceId (optional): Target a specific device when multiple devices are connected

Response:

• Base64-encoded image data (PNG format) directly in the response

Example:

{
  "name": "screenshot",
  "arguments": {
    "deviceId": "emulator-5554"
  }
}

Press Key Tool

Sends a key event to a connected Android device.

Parameters:

• keycode: The Android key code to send (see list below)
• deviceId (optional): Target a specific device when multiple devices are connected

Available keycodes:

• KEYCODE_DPAD_CENTER - Center/OK button
• KEYCODE_DPAD_DOWN - Down navigation
• KEYCODE_DPAD_UP - Up navigation
• KEYCODE_DPAD_LEFT - Left navigation
• KEYCODE_DPAD_RIGHT - Right navigation
• KEYCODE_DPAD_UP_LEFT - Diagonal up-left
• KEYCODE_DPAD_UP_RIGHT - Diagonal up-right
• KEYCODE_DPAD_DOWN_LEFT - Diagonal down-left
• KEYCODE_DPAD_DOWN_RIGHT - Diagonal down-right
• KEYCODE_BACK - Back button
• KEYCODE_HOME - Home button

Example:

{
  "name": "pressKey",
  "arguments": {
    "keycode": "KEYCODE_DPAD_DOWN",
    "deviceId": "emulator-5554"
  }
}

Resources

Connected Devices

List all connected Android devices:

adb://devices

Response:

• A list of connected device IDs

Screenshots

Access a specific screenshot by filename:

adb://screenshots/{filename}

For example:

adb://screenshots/screenshot-2025-04-10T16-30-48-931Z.png

Development

Project Structure

mcp-adb/
├── src/
│   └── index.ts    # Main server implementation
├── build/          # Compiled JavaScript files
├── temp/           # Temporary directory for screenshots
├── package.json    # Project dependencies and scripts
└── tsconfig.json   # TypeScript configuration

Building

npm run build

This will compile the TypeScript code to JavaScript in the build directory.

Requirements

This project uses the following dependencies:

• @modelcontextprotocol/sdk: MCP server implementation
• fs-extra: Enhanced file system methods
• sips: Used for image resizing (built into macOS) to reduce context comsumption

License

MIT

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.