Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true and destructiveHint=false, so the description does not need to restate these. The phrase 'when available' adds a minor behavioral nuance (structured result may be absent), but it does not disclose other traits like error handling, permissions, or what happens when the task is not found.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.