Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must fully convey behavior. It only states that it explains errors and fixes, omitting details like return format, limitations (e.g., only common errors), or how the error parameter is processed. The input schema accepts both string and object, but the description does not clarify usage.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.