If you use our browser extension, Clip To DEVONthink, you’ll see a notification after a successful clip. If you check the Notification Center, the icon of three lines on the right side of the menubar at the top of your screen, you can see a record of those clips. Up to a week’s worth should be available to browse. In High Sierra, clicking on the message should open the record in DEVONthink.
And for those who are curious: whether to record these clips in the Notification Center or not can be controlled in System Preferences > Notifications.