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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 v2.1.224

SendMessage telemetry marks blocked waits and resumes

Under the hood
Useful1 Signal2
Agents

Message delivery telemetry can flag when the sender blocked waiting for completion.

What

Message delivery telemetry can now flag that the caller waited synchronously for completion, alongside the existing route and duration fields.

Details
  • Agent-resume branches report on both success and failure under the route resume.
  • The evicted-agent mailbox path sets the blocked-wait flag.
Evidence

blocked_wait

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 v2.1.224 →