POSTman is a utility tool for testing APIs. You might not have a form and a UI on the browser to start submitting values to your API, therefore, you will need a tool to see if the API is set before moving on. POSTman has your back.
First, you need to install POSTman from the website.
Download and install and you can start testing APIs. Let's begin with our list of products endpoint:
and list of manufacturers:
You can also test a single product:
And so on...