Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, destructiveHint=false, and idempotentHint=true, so the safety profile is known. The description reinforces this with 'Free; changes nothing' and adds relevant context about approval/policy constraints, but it does not describe the return shape or any read-specific behavior beyond what annotations and the purpose sentence imply.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.