Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnly, idempotent, non-destructive, so the safety profile is covered. The description still adds real value beyond that: what is inspected, that checks are live from Base RPC + GoPlus, the output shape (0-100 score, flags, GO/HOLD/STOP receipt), the $0.03 x402 price with no free tier, the prepaid header option, and a key nuance that admin controls are context not risk on established tokens.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.