[Timja]

I would expect "Open Federation" does not mean you need to talk to every instance out there directly. But that it works like a web where messages are routed around. I could be wrong. But I would expect the "servers_i_talk_to" array is what the instances output at the "peers" endpoint:

https://fosstodon.org/api/v1/instance/peers

[easrng]

There's not really any routing, but you don't need to send posts to every instance, just every instance that has users following your instance's users.

[Timja]

Is that the peers list? Other instance where at least one user follows one user from the given instance?

[easrng]

Yep.