What probably matters to youSection of the release
Unclear It is not clear which features turn this option on.
What
rewind_conversation is a request that programs driving Claude Code can send to take a conversation back to an earlier message. It accepts two new options.
allow_summarized_target lets the rewind aim at a message that has already been folded into a compaction summary. Compaction is when older parts of a long conversation are replaced by a shorter summary. Before, such a target gave target_not_found. Now the rewind resolves to the point just after the summary. When it still cannot find the target, it gives a more specific reason.
refuse_if_usage_limited checks your usage limit before rewinding. If the limit has been reached, the request is declined with usage_limited.
Why
Rewinding and retrying a turn can now work after a long conversation has been compacted, instead of failing because the original message is gone. Tools that drive Claude Code can also avoid rewinding into a turn that could not run anyway because of a usage limit.
How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtIt is not clear which features turn this option on.
