You need to authorize your app so it can connect to our APIs. Users also need a way to start the “user consent” flow and grant your app permission to access their data.
Before you start integrating with OAuth 2.0, you can practice the authorization process without using your production code. Use the OAuth 2.0 Playground or sample SDK integrations to preview each step.
When you’re ready to authorize your production app, connect it to the Intuit OAuth 2.0 server. OAuth 2.0 is Intuit’s standard authorization protocol. If you also need to implement single sign-on, you can add OpenID Connect later on.