Using WP for this was relatively straightforward except for several hours wasted in getting the indieauth plugin to work (a missing PHP dependency!!!), which I would never have solved without help from #indieweb-wordpress on IRC. I will ping you when I finish my notes on this.
As such this is a bit of a twist, beacuse the goal was to indiewebify my hugo site and to continue using the excellent ox-hugo! Now, I will probably use ox-hugo to power a 2nd static site as a brain-dump and experiment with indieweb.
Per Aaron – the repeated POST triggers is a default behavior. The webmentions.app script that I was using actually had to be called every time an article was published. Once. With that approach – I would probably have to create some form of a database, and/or add a post git / hugo hook to call the script.
The benefit of stapibas is that it does the database management of which wm's have already been sent.
As you have your own server, may be this helps you too (if you find time to look into the #Hugo webmentions solution).
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