Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already indicate idempotentHint=true, readOnlyHint=false, and destructiveHint=false. The description adds no additional behavioral context (e.g., side effects, transition rules, permissions). With annotations present, the description adds minimal value beyond stating the action.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.