Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, openWorldHint, and idempotentHint. The description adds useful context about data sources (Tradeweb, FRED) and output contents (spread, yield, fee comparisons), which goes beyond the annotation signal. No contradictions or missing critical behavioral caveats are present.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.