Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden for behavioral disclosure. It helpfully reveals the destructive cascading effect ('All documents in the collection will also be deleted'), which is critical context. However, it doesn't mention permissions required, whether deletion is reversible, rate limits, or what happens to the response.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.