HexLab

Season 1: The Attention Queue & a2a › Ep 4

Ep 4 · A note from a teammate

Length 1:01

Today's goal: One agent passes its work to another. What does that note carry? And what doesn't it?

What you'll learn

  • A handoff is a summary plus lists: what's decided, next steps, open questions and references.
  • Limits: up to twenty entries, six hundred characters each, and a two-thousand-character summary.
  • Every route delivers it with the same words: it comes from another agent, not from the owner, and grants no new permissions.
  • It's delivered once. Once it's handed over, it's used up.

Sources

  • attention repo · src/handoff.mjs (fields, limits, delivered once)
  • attention repo · src/deliver.mjs, src/codex-deliver.mjs, bin/attention.mjs (the same wording on every route)
  • Our records: the one handoff in the store (17 Oct 2026)
About our sources →