Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden. It states the core behavior (listing orders for a third party) but does not disclose additional behavioral details such as pagination, order statuses included, or whether it only returns confirmed orders. 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.