http://b4hntuy3fimfh2227vf4f74emnya7p35i5brtqujs6leqvtclfwvjbqd.onion/jointhefedi.html
Neither is documented all that well, nor are they set in stone - mastodon changes its behavior all the time. But since all the software in question(other than Threads, which is why some people consider Threads to be a threat to the fediverse and why some instances understandably pre-emptively block it) *is* free software(actually there's some exceptions like countersocial, and FSE, but they can be mostly ignored), there's nothing keeping people from both adding functionality to make the...