Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries full burden but only states the action without disclosing critical behavioral traits. It doesn't mention if this is reversible (e.g., trash recovery), requires specific permissions, has side effects on related data, or provides any response details, leaving significant gaps for a destructive operation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.