Starling Bank’s API integration is live

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Raluca Lehadus, Engineering lead
10 Apr 2018
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We’ve seen a 20% week-on-week increase in signups to our Data API, with the majority of developers asking for access to data from the challenger banks. We are happy to announce that we released our Starling Bank integration last month.

Like our previous announcements regarding partnerships with Monzo, Zopa and Clockwise, it generated a fair bit of interest in the media. Which was not surprising given the lack of general information about open banking and PSD2, balanced with the need for developers to have more optionality.

Developers and brand new startups are even more eager to get into the loop of new tools and services in order to deliver future-proof products. In fact, for consumers, the big question is how will these partnerships result in new services and products?

How we integrated Starling

Product Demo

Contrary to the high street banks’ open banking flow, which requires login information such as a user’s ID and password, some of the challenger banks created a smooth flow that permits the user to connect their bank with just a single action. Starling’s flow, for instance, asks the user to scan a QR code (that expires in a few minutes) directly from the Starling App Interface.

Data API Access

Once the end-user authorises access to their financial information and transactions, the TrueLayer API displays information regarding the accounts, balance and historical transactions in the unified interface familiar to our users. Access to the information can be revoked by the end-user at any point through our API and it can be re-enabled by re-authorising the TrueLayer application.


At TrueLayer we care a great deal about making a developer’s life easier. That’s why we offer ‘under the same hood’ integrations for most banks in the UK, challenger banks and soon open banking providers. In the next few weeks and months, you’ll keep hearing about many more partnerships and integrations, that will help you and your company seamlessly and immediately access the bank data for 98% of the population in the UK with one, unified API.

Then, as open banking and PSD2 gather pace, we’ll start to see a raft of new fintech services capitalising on this network, including payments which we expect to launch in Q2, 2018.

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Hey, I'm Andy from TrueLayer, and I'm going to try and tell you everything you need to know about Pay by Bank—in just ninety seconds.  Let’s start the clock.  Let’s keep it simple. What is Pay by Bank? It’s a payment method that lets you pay directly from your bank account via your banking app—with zero need for card networks.  That could mean buying pizza, paying for flights, or just about anything in between. And it’s actually pretty easy—and very quick.  It looks a bit like this: start by tapping the Pay by Bank button, then choose your bank from the list.  If you’ve used it before, we can even preselect your preferred bank. You then review the payment, and you’re seamlessly redirected to your bank app to approve it using secure biometrics.  That’s Face ID or a fingerprint, to you and me. And that’s it—success. But no time to relax—we're on the clock!  Now, this might be the first time you’re hearing about it, but every month in the UK, 27 million payments are made using Pay by Bank. And most people who haven’t tried it yet say they’d be happy to—if given the option. On the merchant side, nine out of ten businesses are already planning to adopt it in one way or another.  So what’s in it for businesses?  Number one: more potential sales. No cards means no long card numbers, no clunky 3DS2—just a smoother experience from start to finish. And it converts.  Number two: because payment details are pre-populated and verified with biometrics, things like card-not-present fraud, chargebacks, and authorized push payment fraud are virtually eliminated.  Number three: lower costs. Without all the intermediaries and manual admin, the total cost of Pay by Bank is typically lower than card payments.  I'm running out of time—one last benefit: instant refunds. And trust me, shoppers love instant refunds.  And breathe. That was a lot to cram into ninety seconds.  If you’d like to take your time and learn more about Pay by Bank—and why brands like Just Eat Takeaway, lastminute.com, Ryanair, and Papa John’s already offer it at checkout—you can read our in-depth guide. There should be a link on screen now.  And that’s it. Thanks for watching.
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