Hi thewebco,
Thanks for reaching out, We support the API for AccountRight and Essentials however the EXO registrations for the API are completed HERE.
If you have already completed this step and your developer account is created, to gain the API key and secret you will need to log into your my.MYOB and click on the developer's tab. To access the Developers tab in your [my.MYOB] (https://my.myob.com.au/Pages/Default.aspx) account you need to make sure that you have the correct account selected. Once you are logged into the my.MYOB website, in the top right-hand side of the screen there is be a drop-down menu beside sign out. Make sure that your developer account is selected in this drop-down. Once that is done the Developers tab should appear. From here you need to click on the Register App button and enter in the details relating to your app. [Developer key registration tips](https://apisupport.myob.com/hc/en-us/articles/360001560516-Developer-Key-Registration-TIP).
For any API EXO questions, you will need to reach out to exoapidevelopers@myob.com who can help you with the integration.