Action Execution Trace

Action execution trace confirms whether AutoLXB actually tapped, swiped, input text, waited, or pressed Back. A model saying "I will tap" does not guarantee the action succeeded; check execution trace.

exec_tap_start / exec_tap_done

Tap started and finished.

{
  "task_id": "task-20260506-001",
  "x": 540,
  "y": 1860,
  "ts": "2026-05-06T09:00:12.700+0800",
  "event": "exec_tap_start"
}

{
  "task_id": "task-20260506-001",
  "x": 540,
  "y": 1860,
  "ts": "2026-05-06T09:00:12.760+0800",
  "event": "exec_tap_done"
}

Field	Meaning
x / y	Actual tap coordinates.

If the model output contains a tap but there is no exec_tap_start, the action may not have reached the executor.

exec_swipe_start / exec_swipe_done

Swipe started and finished.

{
  "task_id": "task-20260506-001",
  "x1": 540,
  "y1": 1800,
  "x2": 540,
  "y2": 600,
  "duration": 600,
  "ts": "2026-05-06T09:00:14.000+0800",
  "event": "exec_swipe_start"
}

Field	Meaning
x1 / y1	Swipe start point.
x2 / y2	Swipe end point.
duration	Swipe duration in milliseconds.

exec_input_start

Text input is starting.

{
  "task_id": "task-20260506-001",
  "text": "hello",
  "ts": "2026-05-06T09:00:16.000+0800",
  "event": "exec_input_start"
}

Field	Meaning
text	Text to input. Mask private content before sharing trace publicly.

exec_input_try

AutoLXB tried one input method.

{
  "task_id": "task-20260506-001",
  "try": 1,
  "method": 0,
  "status": 1,
  "actual_method": 0,
  "ts": "2026-05-06T09:00:16.200+0800",
  "event": "exec_input_try"
}

Field	Meaning
try	Attempt number.
method	Planned input method. Internal numeric value; keep it when reporting issues.
actual_method	Actual input method used.
status	Input status. Usually 1 means success.

exec_input_result

Final input result.

{
  "task_id": "task-20260506-001",
  "text": "hello",
  "method_auto": true,
  "chosen_method": 0,
  "actual_method": 0,
  "status": 1,
  "ts": "2026-05-06T09:00:16.260+0800",
  "event": "exec_input_result"
}

If status is not 1, input usually failed. For Chinese input failures, first check whether ADB Keyboard is installed and enabled.

exec_wait_start / exec_wait_done

The task intentionally waited.

{
  "task_id": "task-20260506-001",
  "ms": 1000,
  "ts": "2026-05-06T09:00:17.000+0800",
  "event": "exec_wait_start"
}

Field	Meaning
ms	Wait duration in milliseconds.

exec_back_start / exec_back_done

The system Back key was pressed.

{
  "task_id": "task-20260506-001",
  "ts": "2026-05-06T09:00:18.000+0800",
  "event": "exec_back_start"
}

If a task repeatedly presses Back or returns to the wrong page, combine this with visual execution trace to see why the model chose Back.