Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint: true, so the agent knows it's destructive. The description adds no extra behavioral context beyond that, such as permanence, cascading effects, or permissions. It is consistent with annotations, so no contradiction, but it adds little value beyond the structured metadata.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.