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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.234

Poll events get a nonce and a reserved-kind guard

You'll notice
Useful2 Signal3
Poll Events

Injected events get a random nonce and can't reuse an event kind Claude Code produces itself.

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.
  • Poll events already require permission mode auto.
Evidence

poll event rejected: kind "

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.234 →