Open Developer Console (F12 or right-click on the page -> select
"Inspect")
Select "Network" Tab
Check "Preserve Log" box - this will keep the log from clearing between
page loads
Refresh this page
Filter network requests by "delivery" - Target calls will be made
through at.js to the Delivery API endpoint at page load and as buttons
are clicked
Click on a Target call, it will have its own tabs to sort through;
"Payload" shows the request made to Target, "Preview" shows the response
from Target — these items can be expanded using the triangle drop-downs
in the request/response bodies
Category info is sent to Target in requests made when a button is
clicked, a dynamic offer containing rank order affinities associated
with the pseudononymous Target Visitor Profile is returned by Target in
the response