Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
There are no annotations, so the description carries the behavioral burden. It does disclose a meaningful trait: 'No identifiers are retained,' and the schema's 'discarded after the check' reinforces a stateless/privacy behavior. However, it does not clarify whether the operation is read-only, what side effects exist, or what the response contains.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.