Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description should disclose behavioral traits. It implies a read-only operation by stating 'return', but does not mention side effects, authentication requirements, or rate limits. The vague 'details' leaves the agent guessing about scope.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.