Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true and destructiveHint=false, and the description adds that the operation inspects per-platform delivery status and error details. It does not mention rate limits, authorization requirements, or pagination, but for a read-only lookup backed by an output schema those omissions are minor.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.