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 says 'Get current trading status' and does not explain what the response looks like, whether it covers all exchanges or a subset, timezone implications, or any other behavioral traits. This is insufficient for an agent to anticipate side effects or output.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.