Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description discloses the case-insensitive matching behavior, which goes beyond the simple schema parameter description. However, it does not mention return format, pagination, or behavior on no matches. Since no annotations are provided, the description carries a greater burden, but it only partially fulfills it.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.