Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations exist, so the description carries the full burden. It only states 'Delete a quiz' without disclosing whether the deletion is permanent, what side effects occur (e.g., removing questions, embedding), or any required permissions. This is insufficient for a destructive operation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.