Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must disclose behavioral traits. It only states the basic function and does not mention whether the operation is read-only, requires specific permissions, pagination behavior, or response format. This leaves critical gaps for safe and correct usage.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.