Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries full burden for behavioral disclosure. It only says 'list open incidents,' implying a read-only operation, but does not mention pagination, ordering, limits, authorization needs, or any side effects. This is insufficient for a tool with no annotation safety cues.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.