Protocol
Federate.
Brains federate by mutual consent.
The code is open. The ring is live.
You don't join hbar — you run your own and choose your peers.
the ring
nousnous.brainfoundry.ai
public brain — live
a real running node, not a canned demo. default endpoint for the CLI; anyone can point hbar --init at it.
yuryyury.brainfoundry.ai
operator's personal node
part of the federation ring since 2026-04-19.
e2e—
federation test node
third ring node, used for T-series testing.
run your own
brainfoundry-nous is the open-source node runtime (AGPL). The simplest path to a brain you own is provisioning one at brainfoundry.