Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden but only states the basic action without disclosing critical behavioral traits. It doesn't mention whether deletion is permanent, requires specific permissions, has rate limits, or what happens on success/failure (e.g., error if key doesn't exist). This is inadequate 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.