Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must carry the behavioral disclosure burden. It explains the return format (divan citations like G1393:1) and the exact-match nature of the search. However, it does not explicitly state read-only behavior or address edge cases (e.g., no results, pagination), leaving a small gap in transparency.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.