Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries full burden for behavioral disclosure. It only repeats the action (search) without revealing what the tool returns, whether it is read-only, or any side effects. The description adds little beyond the tool name, offering no insight into output format, pagination, or potential limitations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.