Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
There are no annotations, so the description carries full responsibility, and it delivers: it discloses the Base chain, per-call pricing, x-credit-token header option, free daily allowance, and that no wallet or API key is required. It also reveals that Claude writes the verdict and that real seizure history is incorporated.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.