Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must carry the full burden of disclosing behavior. It only says 'Get', which implies a read-only operation, but does not mention aspects like authentication requirements, return format, ordering, or pagination. This minimal disclosure is insufficient for the agent to fully predict the tool's behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.