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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 v2.1.227

A large paste stays recallable even when it cannot be written to disk

You'll notice
Useful3 Signal1
Prompt Input

Big pastes still come back in your prompt history even when saving them to disk fails.

What

Large pastes are saved to a file so history can recall them later. When that write fails, or the storage layer refuses it, the text is now kept in memory instead of being dropped, so pressing up through your prompt history still shows the pasted content rather than an "unavailable" placeholder.

Details
  • Retained pastes are capped at 10 MB in total, with the oldest evicted first.
  • A refusal from the storage layer reports "paste write refused by the storage backend".
  • Prompt history, its flush on exit, and paste id generation were restructured at the same time.
Evidence

paste_store_write_failed

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 v2.1.227 →