The first thing you'll need to do is sign up at https://app.simpleid.xyz.
Once you've signed up for an account, you can create a new project. That new project will have an "App ID". You'll use this identifier for both the SimpleID SDK and the API. Which leads into the choices you have.
SDK or API?
The API, on the other hand, is more flexible. It can be used across any environment and with any programming language. Getting started with the API is more involved simply because you have the API manually for all tasks whereas the SDK abstracted much of that away.
Made your choice? Let's dig in. Use the navigation to choose docs for the SDK or the API.