Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the burden. It discloses that the tool returns the most recent precheck status, implying a read-only operation and temporal ordering. However, it does not describe response structure or error behavior, so transparency is limited but not misleading.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.