Using API Authentication
Web developers have a number of tools available to generate an authorisation token. You may even have your own internally developed tool for signing payloads. What follows here is merely one suggestion for generating an authorisation token using the dashboard's Payload Builder so you can quickly test API features in the sandbox, end to end.
To get started, sign in to the developer dashboard, click Sandbox in the navigation panel on the left, then click Construct Payload in the Payload builder card.
Click the arrow immediately below on the right to continue.