Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, which covers the safety profile. The description adds no extra behavioral context such as return format, error conditions, rate limits, or auth requirements. It merely restates the action without disclosing anything 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.