@Gargron Oh! My bad, I didn't see that. So individual posts can only be embedded and not public timeline of a particular user?
I think the best way forward would be to get/make a Pelican plugin to toot your new blog post on #Mastodon (using `curl`) and then embed/iframe the link to that toot/post as @Gargron already mentioned. If I understand correctly, that way you should be able to get a comment thread embedded into your static blog :)
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