What probably matters to youSection of the release
What
Plugins can use hooks, small programs that run at set moments, to rewrite the description Claude sees for a tool. Before, Claude Code only kept the new description and a note that it was rewritten. It now also keeps two more things from the hook's answer:
A cache-reset marker
Whether the tool is deferred, meaning its details load only when needed
Why
Claude Code reuses earlier parts of a request through a prompt cache. Plugin hooks that rewrite tool descriptions can now control when that cache is thrown away.
How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's release notes agree[VSCode] Fixed a plugin's permission request showing a name with hidden characters: it now reads "a plugin"
