Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is fully covered. The description adds that the response includes prices, 24h change, volume, funding, and max leverage, which informs expectations about returned data. It does not discuss pagination, rate limits, or real-time characteristics, but those are not critical given the annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.