Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already establish read-only, non-destructive, and open-world behavior, so the description mainly needs to add operational context. It does so by disclosing the 0.020 USDC cost and the supported networks (Base and Solana Mainnet), plus the report's coverage areas. It still omits latency, payment flow, and freshness details.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.