Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the burden of behavioral disclosure. The word 'List' implies a non-mutating read operation, and the clarification 'also called measurements' adds terminological context. However, it does not mention pagination, authentication, or whether the output includes all tables by default.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.