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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 v2.1.225

Classifier failure telemetry gained a stopReason field

Under the hood
Useful1 Signal0
Telemetry

Failure reports for the classifier now include why generation stopped.

What

Classifier failure events now report why generation stopped.

Details
  • stopReason is added to the payload alongside classifierModel, classifierType and failureKind
  • the optional errorKind and fallbackFrom fields are unchanged
Evidence

stopReason

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

See this entry in the whole of v2.1.225 →