Unclear Which feature collects this session history is not stated.
What
Claude Code can send a copy of a session's raw transcript (the saved record of the conversation) as part of session history. When the caller asks to exclude third-party transcripts and the transcript passes the check for third-party markers, it is now filtered line by line before it is sent:
- Lines recording API requests are removed.
- Lines that cannot be read, have no recognisable type, or contain an API request marker are replaced with a placeholder that only gives their size.
Transcripts that contain third-party markers are still withheld entirely, as before. Previously, a transcript that passed the check was sent unchanged, API request lines included.
Why
Less raw API request data leaves your machine when session history is collected.
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Which feature collects this session history is not stated.