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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 v2.1.76

Session Transcript Retention Semantics Changed

The transcriptRetentionDays setting now has stricter behavior when set to 0.

What changed:

  • Old: "Number of days to retain chat transcripts (0 to disable cleanup)" — 0 meant keep forever
  • New: "Number of days to retain chat transcripts (default: 30). Setting to 0 disables session persistence entirely: no transcripts are written and existing transcripts are deleted at startup."
  • This is a behavioral change: setting 0 previously preserved transcripts forever; now it deletes them
Evidence

Transcript retention change (search for "disables session persistence entirely")

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 v2.1.76 →