OptionalactiveOptionalexpandSpecifies which fields in the response should be expanded.
Optionalfixed_Describes a fixed amount to charge for shipping. Must be present if type is fixed_amount.
OptionalmetadataSet of key-value pairs that you can attach to an object. This can be useful for storing additional information about the object in a structured format. Individual keys can be unset by posting an empty value to them. All keys can be unset by posting an empty value to metadata.
Optionaltax_Specifies whether the rate is considered inclusive of taxes or exclusive of taxes. One of inclusive, exclusive, or unspecified.
Whether the shipping rate can be used for new purchases. Defaults to
true.