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The Universal Card-On-File API
Sunlight is an API to change the card-on-file with apps and subscription services. Fintechs use Sunlight to automatically make their cards top-of-wallet as soon as they're issued. Merchants, service providers and subscriptions-based businesses everywhere now offer their customers the ability to save a debit/credit card on file, so they can pay their bills on time, buy in one click, or earn rewards. In 2021, 79% of consumers worldwide reported already having at least one payment card saved with a service or being open to doing so. In recent years, card-issuing as-a-service has become mainstream: any company can now start their own card business in a matter of weeks. Last year, the number of new payment cards issued was at an all-time high. For users, however, switching banks or opening a new card now comes with an additional hurdle: they need to update their payment info across the internet. On the other side of that equation, card issuers have no visibility or control over the card-on-file updating process, and as a result struggle to get their new users to switch their spend from their old card to the new one, leading to low conversion rates and missed revenue opportunities. Until Sunlight. With our universal get-your-card-on-file API, FIs can now offer their users, at any point in their journey, a quick and easy way to update their debit/credit card info everywhere they shop or pay online, without ever leaving their Apps. The Sunlight API works on every platform that has a card-on-file option (think Uber, Amazon, Netflix, DoorDash, Starbucks and so many moreβ¦), is as seamless as a Plaid connection, and always gets the card number and CVV code right on the first try!
Guy Ziv is the Co-Founder and CEO of Sunlight, a seasoned business executive, and entrepreneur with a wealth of experience in introducing disruptive technologies to medium and large financial institutions worldwide. With a robust background in product delivery, sales strategy, and execution, Guy has a track record of successfully forming dozens of strategic partnerships and delivering innovative solutions in the ever-evolving realm of financial technology.
Product executive, entrepreneur & community expert with a versatile experience in building sticky products. Ex-Moovit (acquired by Intel)
Gil Peretz is an experienced and passionate entrepreneur in the tech space. With a background in R&D, he has held positions such as Group Manager at Moovit, and has a wealth of experience in building high performance systems serving 1B+ users. His expertise spans from integrating systems, data scraping, and modeling on a large scale.
Meet Sunlight, the API to change the card-on-file with apps and subscription services.
Sunlight offers a universal API to update a card-on-file across apps and subscription services, enabling fintechs and card-issuing entities to keep usersβ debit/credit information current within their apps, similar to a Plaid-like connection. The product targets fintechs and platforms with card-on-file usage, aiming to increase card usage and revenue by reducing update friction.
From the original launch (Jul 2022) β may be outdated.

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