What
The internal format for status updates sent during headless, cloud-hosted sessions (the stream-json status frames) now documents a notices field, which can carry a short serving notice message. This joins existing fields covering the serving word/reason, connection status, tool calls, and directory sync.
Why
This gives cloud sessions a channel to surface a short informational notice alongside their regular status, rather than only the fixed set of fields that existed before.
Names in the bundlenotices
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 since
Anthropic's documentation has since written up notices, on Claude Code changelog.
* Fixed scheduled routine and notification turns in remote sessions not receiving turn-start notices (newly available tools, MCP changes, date, todos) until after the first tool callchangelog see the edit
One source agreesOne thing we can check says the same as this entry.
Anthropic's documentation agrees
Anthropic's documentation has since written up notices, on Claude Code changelog.