Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already provide the safety profile (readOnlyHint=false, destructiveHint=true, idempotentHint=true), so the agent knows it's a destructive operation. However, the description itself adds no behavioral context beyond the endpoint path—it doesn't clarify permanence, cascading effects, or error behavior, which would add value beyond the annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.