adb_press_key
Press a key on an Android device using key codes like BACK, HOME, or MENU to automate device interactions through the ADB MCP Server.
Instructions
Press a key on the device
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| keyCode | Yes | Key code to press (e.g., "BACK", "HOME", "MENU", or numeric code) | |
| deviceId | No | Device ID (optional) |
Implementation Reference
- src/tools/screen.ts:241-278 (handler)The pressKey method executes the ADB shell input keyevent command to simulate pressing the specified keycode on the Android device, with error handling and device connection checks.
async pressKey(keyCode: string | number, deviceId?: string) { try { const connected = await this.adbClient.isDeviceConnected(deviceId); if (!connected) { return { success: false, error: 'Device not connected', message: 'Cannot press key - device is not connected' }; } const command = `shell input keyevent ${keyCode}`; const result = await this.adbClient.executeCommand(command, deviceId); if (!result.success) { return { success: false, error: result.error, message: 'Failed to press key' }; } return { success: true, data: { keyCode, deviceId: deviceId || this.adbClient.getDefaultDevice() }, message: `Pressed key: ${keyCode}` }; } catch (error: any) { return { success: false, error: error.message, message: 'Failed to press key' }; } } - src/index.ts:183-198 (schema)Defines the tool name, description, and input schema (keyCode required as string or number, optional deviceId) for adb_press_key in the ListTools response.
name: 'adb_press_key', description: 'Press a key on the device', inputSchema: { type: 'object', properties: { keyCode: { type: ['string', 'number'], description: 'Key code to press (e.g., "BACK", "HOME", "MENU", or numeric code)', }, deviceId: { type: 'string', description: 'Device ID (optional)', }, }, required: ['keyCode'], }, - src/index.ts:449-450 (registration)Registers the tool handler by dispatching adb_press_key calls to ScreenTools.pressKey method in the CallToolRequest switch statement.
case 'adb_press_key': return await this.handleToolCall(this.screenTools.pressKey(args?.keyCode as string | number, args?.deviceId as string));