Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, so the safety profile is covered. The description adds value by disclosing the payload shape (registration status plus reputation, credentials, blockchain anchor), but leaves open what happens for an unregistered DID — error versus a negative status — and says nothing about cost, rate limits, or whether calls are metered against credits.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.