Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It adds meaningful context about async completion ('once the expert ... completes the work') and the full structured deliverable, but does not disclose what happens if the work is not yet complete (e.g., status response), error behavior, or any rate limits. This is adequate but not rich.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.