Our nopCommerce public web API plugin download package comes with a postman collection that covers all methods from our API plugin. If you don't use postman then you can download it from here to easily test our API methods before you implement them in your application.
Postman is an API platform for building and using APIs. Postman simplifies each step of the API life-cycle and streamlines collaboration so you can create better APIs—faster.
Once downloaded, please import the postman collection that is shipped with our plugin download file. To import the postman collection, please see Getting started.