Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With empty annotations, the description carries the burden of behavioral disclosure. It states that results are organic and may include an answer box, adding useful context about the return format. However, it omits potential rate limits or error behavior, which are not critical but would enhance transparency.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.