Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden for behavioral disclosure. It indicates this is a read operation ('Returns'), but doesn't specify whether it requires authentication, has rate limits, returns real-time or cached data, or what format the rewards data takes. For a query tool with zero annotation coverage, this leaves significant behavioral gaps.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.