Browse the available APIs
The Open Banking Sandbox contains APIs to enable developers to prototype solutions using APIs alligned to multiple banking standards, as well as enpoints aggregating the interfaces exposed by multiple banks. Pick the API domain you are interested in and review the documentation to identify the API you want to use in your solution.
Register an application
Before you can use an API you have to register your application. When you register an application, the application is assigned a unique client ID and client secret. You must use the client ID when you call an API that requires you to identify your application by using a client ID, or a client ID and client secret. Check the API description for the details.
Select a plan
Now that your application is registered, you need to subscribe to a plan (e.g. the default plan in Payment Initiation (Secure)). The plan determines the number of API calls that your application can make. Some plans are free and no approval is required, some require approval, and some require approval and a monthly subscription. Think about what you need and choose the most suitable plan.
All done! You are signed up, registered, and ready to go.