Shipping Discount API reference
The Shipping Discount API enables you to create a new type of discount that is applied to one or more shipping rates at checkout. The API includes two key objects: Input and FunctionResult.
The Input object is the complete schema that your function can receive as input.
FunctionResult
Anchor link to section titled "FunctionResult"The FunctionResult object is the shape of the function's output.
The following function result includes one free shipping discount: