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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 v2.1.222 4 Aug 2026

Transcript conversion dropped its viewerOnly/convertToolResults mode

You'll notice

Useful3 Signal0

Sessions

Transcripts now show tool results the same way everywhere, instead of differing in viewer-only sessions.

What

The message converter no longer branches on a viewer-only mode, so tool-result behaviour is consistent for every caller.

Details

It now always converts user messages carrying tool_result, and always honours convertUserTextMessages.
The several callers that passed viewerOnly or convertToolResults were simplified to drop the option.

Evidence

convertUserTextMessages

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.222 →