Authorization is the function of specifying access rights to resources such as APIs. More formally, "to authorise" is to define an access policy where access requests are approved or disapproved. So, Access Keys are used for this purpose.
To add a new access key, click on the Add new button on the panel. Clicking on the Add new will open a form with the following fields.
Here, the key which is auto-generated is associated with the user selected, once it is enabled. Anyone can use this access key but can access only those APIs of which the selected user has the permission to access based on his role (admin/seller/user...etc.).
Select the User from the drop-down for which you want to generate the access key.
Select the Enable check box if you want to enable the access key for the user.
How to use the access key to access any API?
You can use this access key to access APIs via StoreHippo node-js SDK.
Here is an example below of how to use this auto-generated access key to access products listing API: