Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of behavioral disclosure. It implies a read-only operation via 'retrieves', but does not mention session requirements, error behavior, pagination, or any side effects. The minimal verb gives some transparency but lacks crucial context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.