Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full behavioral burden. It clearly indicates that this tool returns field metadata and points to submit_enquiry as the place where answers are passed, which implies this tool is a read-only introspection step. It does not explicitly state 'read-only' or describe response shape, but the content is strong enough for an agent to understand its role.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.