Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The readOnlyHint annotation already indicates this is a read-only operation, and the description ('List') is consistent. However, the description adds no additional behavioral context such as caching, authentication, or rate limits, so it meets the baseline for non-contradiction but does not enhance transparency.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.