Definition
Plain language
A separate small model that sits between AI agents and translates what each one writes for the others.
As stated in the literature
In AgentFugue, a trained communication-layer model that compresses agent scratchpads into structured notes and serves intent-driven readouts to teammates while agents remain frozen.
Also called: hub
Why it matters: It lets frozen agents collaborate without each one being trained to understand every teammate's verbose internal monologue.
For example, instead of two coding agents pasting their full scratchpads to each other, a hub model summarizes each one's notes and shows the other only the parts relevant to its current step.
Heard on the show
“Subject, then verb, then aggregation hub.”Episode 023 — Why a Small Agent Confidently Overwrites Memories It Doesn't Understand