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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 v2.1.23

Improved API Error Logging

What

API errors now include attempt numbers and more detailed error information.

Details
  • Format: API error (attempt N/M): status message
  • Includes full status code and message for Anthropic API errors
  • Helps diagnose retry behavior and transient failures
Evidence

Error logging at line 325950 (contains "API error (attempt")

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 v2.1.23 →