Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full disclosure burden. It covers defaults, the 500-row cap, allowed dimensions, comma-separated multi-dimensions, and the subdomain behavior of domain properties. It stops short of mentioning authorization or rate limits, but since this is a read-only analytics query, the most important behavioral constraints are disclosed.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.