You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
Terminal UIArea: what it touches
New FeaturesKind: in v2.1.236,
New FeaturesSection of the release
What
notify_when_idle no longer accepts the current session as a target. It returns an error naming the session you passed and explaining that nothing was subscribed.
Details
The session identifier is interpolated into the message.
This replaced a message that previously advertised ultraplan progress monitoring on the same path.
Unconditional; there is no flag or setting involved.
Evidence
nothing was subscribed; you already know when your own turn ends.
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
Read from
Names in the bundlenotify_when_idle
How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's release notes agreeAdded notify_when_idle to cross-session SendMessage: ask another Claude Code session on this machine to send one notice when it next goes…
