Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full behavioral burden, yet it only names the returned element categories. It says nothing about whether a workspace must exist, whether results are scoped to the active project, ordering, size, or return format — all relevant for an inventory call.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.