Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true and openWorldHint=true, so safety is covered. The description adds a meaningful caveat: 'UNVERIFIED against a real quiz', which warns about reliability, but it does not discuss auth, rate limits, or other behavioral traits beyond this single note.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.