Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the behavioral transparency burden. 'Get full details' signals a read-only lookup and suggests richer output than a list. It does not disclose what specific details are returned, error behavior, or execution state handling, but for a simple getter this is a moderate gap.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.