app_screenshot

This tool on every surface: CLI · MCP · Python · JavaScript · Go · Java · .NET

Capture the device screen as a PNG. Returns the image to the caller, and also writes it to disk when path is given.

Read-only: readOnlyHint is true.

Arguments

Name	Type	Required	What it is
device	string		Device serial to target, e.g. "emulator-5554". Omit when only one device is running.
driver	string: uiautomator2, uiautomator, wda		Driver to use: "uiautomator2" (default for Android; fast, installs a server APK on first use), "uiautomator" (Android, installs nothing, slower, cannot type), or "wda" (WebDriverAgent: iOS simulators and iPhones).
path	string		Optional file path to save the PNG to.

Examples

Each is the arguments of a tools/call request; the first is shown whole.

Save a screenshot

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "app_screenshot",
    "arguments": {
      "path": "screen.png"
    }
  }
}

On an Android 15 emulator the answer's text was:

saved …/screen.png (153875 bytes)

mobium screenshot -o screen.png on an Android 15 emulator