>>12
You aren't understanding what I mean by "write API". It's not MY site they're writing to, it's THEIR site I want to write to.
Again, the aggregate site is supposed to let people connect their accounts from various sites together to get their subscriptions, subscribe to people, mess with playlists-to the site, and not leave that client-side to the aggregate.

Okay, imagine Invidious if it didn't observe JUST Youtube. That's the best I can get you. It's a frontend meant to combine several websites together into a semi-cohesive experience.