Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Discloses full behavioral details beyond annotations: polls Base mainnet, returns 'pending' until payment detected, then 'verified' with txHash and Basescan link. Also specifies the polling interval. No contradictions with annotations (readOnlyHint, idempotentHint, destructiveHint).
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.