In the "Make list"-section of AWB I would like to be able to select "External links search" as a source.

It should then be possible to enter the desired URL in the textbox below the source selector.

When clicking on the "Make list" button AWB would use https://www.mediawiki.org/wiki/API:Exturlusage.

This could be very useful when fixing linkrot related issues. Also, AWB has the ability to filter out non-mainspace results but Special:LinkSearch does not.