Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It discloses the returned content well and indirectly suggests this is a read-only listing tool, but it does not explicitly state behavioral aspects such as whether this tool submits anything, whether it requires authentication, or how the fields are ordered/grouped. The workflow hint ('pass answers to submit_enquiry') implies no side effects but does not state them.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.