Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure and delivers nothing. It does not say whether the operation is idempotent, what permissions are required, whether an existing database of the same name errors or is silently reused, or what the response contains.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.