Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden but only states it 'gets details' without specifying what details are returned, whether it's a read-only operation, authentication requirements, error handling, or rate limits. It mentions 'specific role by name' which implies lookup behavior but lacks depth about the operation's characteristics.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.