Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full responsibility for disclosing side effects. It only says 'assign a ticket to a user' without specifying whether it changes the ticket status, sends notifications, is reversible, or requires special permissions. For a mutation tool, this is a significant omission.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.