Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the behavioral burden. 'Get permissions for a specific role' conveys a read-only retrieval intent, but it does not disclose whether the role must exist, what the response shape is, or how errors are handled. This is adequate for a simple getter but not rich.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.