What probably matters to youSection of the release
Unclear It is not clear whether plugins can register for this hook yet, or what switch controls it.
What
Claude Code has a new plugin hook called prompt.autocomplete. A hook is a point where a plugin can step in and add its own behaviour. Here, plugins can answer with suggestion rows, and Claude Code draws them beneath its own suggestions in the order the hooks answered.
A matching request lets another app ask Claude Code for these suggestions while someone types elsewhere. That app could be the desktop app, the mobile app or the VS Code extension. The request is checked before it is accepted:
client_id (optional): 1 to 64 letters, digits, dots, underscores or hyphens
There is also a local path for Claude Code's own prompt box.
Why
Plugins get a new way to offer prompt completions, and those completions can reach composers outside the terminal. The feature may not be fully switched on yet.
