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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

Background agent failures are labelled with a clearable reason

You'll notice
Useful4 Signal2
Background Agents

A stopped background agent now tells you whether it was auth, billing, context limit or model availability.

What

When a background agent run stops, its stop reason is now mapped to one of auth, billing, context limit or model unavailable, each with a user-facing label and error code, so a failed run says why it failed. A "credit balance too low" stop is reported as a billing problem.

Details
  • The auth category is deliberately suppressed for remote sessions, where re-authenticating locally would not help.
Evidence

credit balance too low

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 →