Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint=true and idempotentHint=true, so the agent knows this operation mutates and can be repeated. The description adds no extra behavioral context beyond what the annotations provide, such as whether deletion is permanent, whether related data is affected, or whether authorization is required. Because the annotation already carries the core safety signal, the description is adequate but not enriched.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.