Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Without annotations, the description is the sole source. It states the tool checks for missing resources and errors, implying a non-destructive read operation. However, it does not confirm whether the tool modifies anything or requires specific permissions. Minimal 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.