You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
Poll EventsArea: what it touches
ImprovementsKind: in v2.1.234,
ImprovementsSection of the release
What
Events injected by a host now have a random nonce stamped into the event wrapper before the size limit is applied, and an event kind that collides with one Claude Code produces itself is refused unless the caller explicitly opts in.
Details
The size-limit message now says the measurement is taken after nonce stamping.
The queue-depth check moved ahead of building the event wrapper.
A reserved kind that still reaches dispatch is refused and redelivered on reconnect.
Hook payloads gained a poll_event prompt-origin value, marking the enqueue-time pass where a blocking verdict rejects the event.