Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, and destructiveHint false, so the description does not contradict them and the safety profile is clear. The description adds the core computational intent but does not disclose output format, rounding behavior, or unit conventions. Given the annotations cover side effects, the description provides modest additional transparency.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.