Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description must explain all parameters. It implicitly covers order_id, cancellation_request_id, and decision via the phrase 'buyer cancellation request' and 'Accept or reject,' but it does not address note or merchant_reference at all. With five parameters and no schema descriptions, the description fails to fully compensate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.