Cannot connect to a real device. Emulator works

[prameshbajra]

I have this in my ~/Library/Application Support/Claude/claude_desktop_config.json. I tried both uvx and local development mode.

{
  "mcpServers": {
    "android-mcp": {
      "command": "uvx",
      "args": [
        "android-mcp",
        "--device", "my device ID I got from adb devices"
      ]
    }
  }
  "preferences": {
    ... my preferences
  }
}

But claude cannot connect to it. I gives this error

Traceback (most recent call last):
  File "/<homepath>/Library/Application Support/Claude/Claude Extensions/ant.dir.gh.cursortouch.android-mcp/src/android_mcp/mobile/service.py", line 11, in __init__
    self.device = u2.connect(device)
                  ~~~~~~~~~~^^^^^^^^
  File "/<homepath>/Library/Application Support/Claude/Claude Extensions/ant.dir.gh.cursortouch.android-mcp/.venv/lib/python3.13/site-packages/uiautomator2/__init__.py", line 946, in connect
    return connect_usb(serial)
  File "/<homepath>/Library/Application Support/Claude/Claude Extensions/ant.dir.gh.cursortouch.android-mcp/.venv/lib/python3.13/site-packages/uiautomator2/__init__.py", line 962, in connect_usb
    return Device(serial)
  File "/<homepath>/Library/Application Support/Claude/Claude Extensions/ant.dir.gh.cursortouch.android-mcp/.venv/lib/python3.13/site-packages/uiautomator2/base.py", line 36, in __init__
    self._dev = self._wait_for_device()
                ~~~~~~~~~~~~~~~~~~~~~^^
  File "/<homepath>/Library/Application Support/Claude/Claude Extensions/ant.dir.gh.cursortouch.android-mcp/.venv/lib/python3.13/site-packages/uiautomator2/base.py", line 79, in _wait_for_device
    raise ConnectError(f"device {self._serial} not online")
uiautomator2.exceptions.ConnectError: device emulator-5554 not online

Can you please take a look at this?

Thank you 🙏🏽