Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint=true and readOnlyHint=false, so the safety profile is carried by structured data. The description adds no context beyond that — no statement about irreversibility, cascading effects on run history, required permissions, or error conditions — so it contributes essentially nothing to behavioral understanding.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.