Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full behavioral disclosure burden. The verb 'list' reasonably implies a read-only operation, but the description does not explicitly state that there are no side effects, what the return payload contains, or whether control processes are included by default.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.