Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It provides some behavioral constraints like 'At least one location parameter should be provided', the default facility_type, and limit default/max, but it does not disclose response behavior (e.g., sorting, pagination, error conditions) or any side effects. This is a partial disclosure, not comprehensive.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.