Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries full burden. 'Delete a coupon' implies a destructive mutation, but it doesn't disclose behavioral traits such as whether deletion is permanent, requires specific permissions, has side effects (e.g., affecting related orders), or what the response looks like. This is a significant gap for a mutation tool with zero annotation coverage.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.