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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 v2.1.229

Clearer message when a request is rejected as too large

You'll notice
Useful4 Signal2
Error Messages

If a request is too big, you're told whether dropping attachments or compacting would help.

What

On an HTTP 413 from the API, Claude Code now measures the request body and how much of it is images and documents, then tells you whether removing attachments or compacting could make it fit or whether nothing in the request is strippable.

Details
  • The size threshold used for the explanation comes from a remote config value named tengu_wobbly_fern, falling back to a built-in limit when no value is supplied.
  • Details of the oversized request are logged as a request_body_over_limit line.
Evidence

so removing attachments or compacting cannot make it fit.

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 v2.1.229 →