Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=true, so safety profile is covered. The description adds genuinely new behavioral context the annotations cannot convey: the price (0.020 USDC), the payment chains (Base and Solana Mainnet), and the exact lock providers inspected.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.