Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It only says 'List' which suggests a read-only operation, but it does not explicitly state there are no side effects, whether permissions are required, or what the response contains. It does not address pagination or output format.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.