Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries full burden. It states that the tool returns form details (name, ID, field definitions), implying a read-only operation. However, it does not explicitly confirm lack of side effects, permissions needed, or rate limits, leaving some behavioral aspects unstated.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.