Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full behavioral burden. It does disclose that removal goes to 'Deleted Items (trash)', implying a recoverable soft-delete rather than permanent destruction, which is genuinely useful. However, it omits permissions/auth requirements, whether the move can be undone or how, and any return/confirmation behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.