Callbacks tab

This tab shows a summary of the callback requests ZAP has received. For each callback you can see:

An Id
The Timestamp of the received request.
The Method associated with the request (GET, POST, etc.)
The Handler - The ZAP component which caught or responded to the callback request.
The referer (if one was included in the request, Ex: the URL on which the payload was encountered).

See also

Callback options
UI Overview for an overview of the user interface