Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the burden. It discloses a critical dependency (seasonId from getConfigTreeMini) and states the filtering behavior. However, it does not describe the output format, what 'recent' means, or any other behavioral details, so it is adequate but not rich.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.