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 mentions the discount benefit but fails to describe critical behaviors: whether this is a synchronous or asynchronous operation, what the completion_window parameter means for timing, rate limits, error handling for large batches, or what the output looks like. For a batch processing tool with complex parameters, this leaves significant gaps.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.