You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
Cross-Session MessagingArea: what it touches
ImprovementsKind: in v2.1.247,
ImprovementsSection of the release
What
When Claude sends a message to another session, the tool now tells it that the summary is only a label on your own transcript row and is never transmitted, and that the recipient's human sees only the first line of the message until they expand it, so the first line must be a self-contained sentence rather than a greeting or a bare @-mention.
Details
Applies only to the cross-session form of the send-message tool.
Effect for you: fewer messages that open with "hi" and hide the point below the fold.
Evidence
A 5-10 word label for your own transcript row (not transmitted
Strings lifted out of the shipped bundle, so the claim above can be checked against them.