Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description adds behavioral context beyond annotations (only idempotentHint: false) by stating the action is an upsert and listing acceptance criteria (e.g., price range, termsMode constraints). However, it does not disclose side effects like what happens on success/failure, whether it overwrites existing data, or any irreversible consequences.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.