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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 v2.1.248

New telemetry for background task delivery

Under the hood
Useful2 Signal3
Background Tasks

Finished background tasks now report whether their output was spliced back in or lost.

What

Each finished background task now reports once with an outcome of spliced, no_host or unparseable plus the task status, under tengu_bash_task_delivered, with paired success and failure marks named task_local_shell_delivery.

Evidence

tengu_bash_task_delivered

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 v2.1.248 →