Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the behavioral transparency burden. It clearly signals a read-only operation ('Get details') and discloses the return fields (status, URL, plan, usage). It does not mention error cases or authentication, but for a simple GET-style tool the core behavior is transparent.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.