Speaking of handling markdown. I created funfedi.dev Media Types a while ago (and just added it to the navigation). I lost interest when I saw that nobody properly handled the mediaType attribute of a note. Not that I know what I expected.

Can you explain what goes on in mitra? When mediaType is text/markdown. It changes __bold__ to <p>__bold__</p>, otherwise no paragraph tags. I'm pretty sure, I was once told to use __ for bold and * for emphasize. So my markdown should be good.

Full example ... input activity -> mitra api response

Final note: I am not sure what I would want a proper data format to do. I find the solution of W3C ActivityPub (not W3C ActivityStreams) proposes of putting HTML in content and adding source with the original, from which the HTML was generated ok. Of course, this leaves the existence of the summary and name field superfluous.