You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SessionsArea: what it touches
New FeaturesKind: in v2.1.232,
New FeaturesSection of the release
What
If another Claude Code session running on the same machine already holds the name you asked for, this session takes an adjusted name instead of silently overwriting. You get a notice ending "Use /rename to pick a different name.", and the model is told the same thing so it does not refer to the old name.
Details
The saved session record now tracks where its name came from, with a new "collision" value alongside "user", "auto" and "derived", and keeps the names it previously held.
The model-facing reminder says another live session on this machine already holds that name, so this session is renamed.
Telemetry records a session name collision, including a variant for when the collision check itself failed.
Evidence
another live session on this machine already holds that name, so this session is, Use /rename to pick a different name.
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.
Confirmed sinceAnthropic's documentation has since written up /rename, on Claude Code changelog.* Fixed SDK prompt suggestions, side questions and `/rename` sending the conversation from before a compactionchangelogsee the edit
How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's documentation agreesAnthropic's documentation has since written up /rename, on Claude Code changelog.
