Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, covering the safety profile. The description adds a useful scoping detail: the default of 12 months for upgrades/downgrades. But it does not describe return format, pagination, or other behavioral nuances beyond what annotations and the output schema already imply.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.