To access the API Documentation backend user must log on and enter the menu API Generator -> List API (Documentation). If you've made on the menu API API Generator, the API Documentation will be automatically made.
For general user / guest, access with the following URL :
Here below is an example of the API documentation that has been made:
You simply click on one of the links API Documentation provided to view the details of the API.
If you are a user Postman, you can click Export FOR Postman then you import the Postman tool to enable you to perform testing API.