Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries full burden for behavioral disclosure. 'Get details' implies a read operation, but there is no mention of response contents, error/not-found behavior, or permission requirements. It adds minimal behavior context beyond the verb.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.