Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must convey behavioral traits. 'Preview' suggests no side effects, but this is not stated, nor does it mention idempotency, authentication needs, or output format. The description is insufficient for an agent to understand the tool's behavior beyond being a preview.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.