How do I make my first API call? Joao March 24, 2020 13:25 Follow Check our Quick Start guides for the Data API and Payments API on our official documentation. They include: Step-by-step with screenshots; Link to our Postman collection; Video walkthrough and more. Related articles Which banks are supported in the Data API in the UK? Which countries is TrueLayer currently in? Why doesn't TrueLayer support iframes? Does TrueLayer cache my requests? How far back can I pull transactions?