Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries full burden for behavioral traits. It fails to disclose that the tool is paginated (via page and size parameters), what the response contains (e.g., test case IDs or full objects), or any side effects (none expected). The minimal description leaves agent uncertain about behavior beyond a basic read operation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.