Handing off between two agents — shared memory or pass everything?

I have a triage agent and a refund agent. When triage hands off, do people pass the full transcript or a summary? Full transcript feels wasteful, summary feels lossy.

Summary plus the last three user messages verbatim. The summary carries facts, the verbatim messages carry tone.

And give the receiving agent a tool to fetch the full transcript if it needs it. It rarely does.

This is a great pattern, stealing it.