Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden and does disclose one meaningful trait: an admin-level authorization requirement. It omits the traits that matter most for a destructive operation — whether the deletion is permanent, whether it breaks existing deliveries or inbound events, and what happens if the ID is not found.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.