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, but it only says 'List all comments.' It does not state whether the operation is read-only, whether pagination or ordering applies, what permissions are required, or what the response shape looks like. The word 'List' implies a read operation, but that is not explicitly confirmed or elaborated.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.