Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint=true and idempotentHint=true. The description adds context about the type of data (memories, sensitive data) and when deletion is appropriate, which aligns with and supplements the annotations without contradiction. It does not introduce new behavioral traits but adds useful nuance.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.