Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are supplied, so the description carries the entire behavioral burden, yet it only says 'delete'. It does not disclose that removal is destructive, whether the operation is undoable via document.undo, what happens to a shape's text or group membership, or how it behaves when the id is unknown — all critical for an irreversible mutation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.