What probably matters to youSection of the release
What
Plugins (add-on packages that extend Claude Code) can now send a notification through $.ui.notify. The notification is delivered through the terminal, using a channel such as iTerm2, kitty, Ghostty, or a plain terminal bell. Claude Code checks each message before sending it. If the plugin gives no title, the plugin's name is used.
Plugin tool descriptions also get a longer length limit once Claude loads the tool through tool search, which is how Claude finds and loads tools only when it needs them. When a description is cut short, the notice now mentions this longer limit.
Why
Plugin authors can tell you about something through a desktop-style notification, and they can write fuller tool descriptions for tools loaded on demand.
How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's release notes agreeAdded $.ui.notify for mods: raises a native notification through your own notification setting and says which channel sent it
