Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
Cloud SessionsArea: what it touches
Internal ChangesKind: in v2.1.290,
Internal ChangesSection of the release
What
When Claude Code creates a code session, the server sends back a session id. Claude Code used to check only that the id was there. It now also checks that the id is valid. If it is not, Claude Code logs "No usable session.id (cse_) in response" instead of "No session.id (cse_) in response".
Why
A session id with the wrong format is now caught at the start instead of being used.
