Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It discloses the content of the response (key, label, type, etc.) but does not explicitly state it is a read-only operation, mention error conditions, or describe the exact return format. While the read-only nature is obvious, the lack of explicit behavioral context warrants a moderate score.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.