Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description does add useful behavioral detail about returned contents, including missing required fields and PDF id/hash appearing only once submitted. However, it does not explicitly state that this is a read-only operation or mention permissions, side effects, or access constraints.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.