Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, covering the safety profile. The description adds no behavioral details beyond 'listing' and 'filtering' – no mention of pagination, return format, or permissions. With annotations present, the bar is lower, but the description contributes nothing extra about behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.