Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations declare readOnlyHint=true, and the description's 'List' is consistent, so no contradiction. However, the description adds no behavioral details such as return format, pagination, or any update semantics implied by the tool name. It relies entirely on the annotation and output schema.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.