Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden. It only restates the tool's name and provides no behavioral traits such as idempotency, required permissions, effects of creation, or validation behavior. This is equivalent to the low-scoring 'Process' example in its lack of informational value.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.