Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, openWorldHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is covered. The description adds useful scope coverage (ATP, WTA, Challenger, ITF, juniors) but does not add deeper behavioral details like data freshness, pagination, or rate limits. This matches the baseline for annotations covering safety.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.