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. It only states what the schema is for, not what the tool does operationally (e.g., returns a static schema, fetches a remote resource, or validates input). Safety, side effects, and output format are all unexplained.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.