The useDndMonitor hook can be used within components wrapped in a DndContext provider to monitor the different drag and drop events that happen for that DndContext. 
import {DndContext, useDndMonitor} from '@dnd-kit/core';

function App() {
  return (
    <DndContext>
      <MyComponent />
    </DndContext>
  );
}

function MyComponent() {
  // Monitor drag and drop events that happen on the parent `DndContext` provider
  useDndMonitor({
    onDragStart(event) {
      console.log('Drag started', event);
    },
    onDragMove(event) {
      console.log('Drag moved', event);
    },
    onDragOver(event) {
      console.log('Drag over', event);
    },
    onDragEnd(event) {
      console.log('Drag ended', event);
    },
    onDragCancel(event) {
      console.log('Drag cancelled', event);
    },
  });
}
Make sure you use the useDndMonitor hook within a <DndContext> provider.