Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full behavioral burden. "List" implies a read operation and "active" hints at filtering out expired/revoked rules, but there is no disclosure of permissions required, pagination, ordering, or result size for a ban list that can grow large.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.