Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden. It discloses the scope ('all comments') and implies a read-only operation via 'Get', but it does not mention any behavioral traits such as ordering, limits, or the shape of returned data. This is adequate for a simple retrieval but adds minimal context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.