Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the disclosure burden. It makes clear this is a metadata/read operation returning enquiry field definitions, and it explicitly points submission elsewhere ('Pass answers to submit_enquiry'), implying no side effects here. It does not discuss auth or rate limits, but the operation is a simple no-parameter lookup.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.