Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must disclose behavioral traits. It only indicates a read operation ('List'), but omits details on pagination, sorting, permissions, or limits. This lack of transparency fails to inform the agent about the tool's operational effects.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.