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.
Retry classifier labels errors that carry a type but no status
Under the hood
Useful2Signal2
Elsewhere
Errors hidden inside a successful response now get their own retry label instead of being unclassified.
What's wrong with this entry?
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What
Errors returned inside an otherwise successful response, which have an error type but no HTTP status, now get their own label built from an in_band_ prefix plus the error type. This branch runs before the existing server error and modified-thinking-blocks cases.
Evidence
thinking_blocks_modified
Strings lifted out of the shipped bundle, so the claim above can be checked against them.