Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must carry the behavioral disclosure burden. It discloses the dependency on a valid matchId from specific event endpoints, which is useful. However, it does not explicitly state that the operation is read-only, nor does it describe return format or potential edge cases. It provides some context but not rich behavioral detail.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.