Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Goes well beyond the annotations (destructive, idempotent, not read-only): it discloses the undo path (restore_deleted with kind 'uploaded_document'), the TTL window during which undo works, and that missing/expired/foreign ids return deleted:false instead of erroring. Those are exactly the mutation-side details an agent needs before calling a destructive tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.