Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description covers pricing ($0.25/call after 10 free calls), payment method (Base USDC, payment_ref), and endpoint path. However, it does not disclose rate limits, idempotency, or authentication requirements beyond payment context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.