Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries full burden for behavioral disclosure. It only states the basic purpose and gives no insight into return formats, error handling, data freshness, or potential side effects. For a read operation, the lack of detail on what exactly is returned or how missing identifiers are handled is a significant gap.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.