Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden. The word 'List' clearly signals a read-only operation and 'current agent's' adds a meaningful scoping behavior. However, it does not disclose operational details such as authentication requirements, error behavior, whether an empty list is possible, or any effects on state beyond the implicit read-only nature.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.