Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the burden of behavioral disclosure. It only indicates the HTTP method (GET) and the resource, which implies a read-only operation, but it does not state that multiple links are returned, what the response structure is, whether pagination exists, or how errors/no links are handled.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.