Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of disclosing behavioral traits, but it offers none. It does not state that this is a read-only operation, what data is returned, or any rate limits or other side effects, leaving the agent without essential context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.