Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already disclose destructiveHint=true, readOnlyHint=false, and idempotentHint=false. The description adds no additional behavioral context such as permanence, side effects, or permissions, but it doesn't contradict the annotations. With annotations carrying the safety profile, this is a neutral baseline.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.