Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It does disclose an important edge case: 'Unregistered agents get trusted: false with a registration CTA.' However, it does not mention permissions, rate limits, or whether the operation is read-only, though 'Single-call verdict' implies a safe read. Missing details on profile info scope and potential errors.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.