banking-api
(3)
Prometeo
Prometeo is a Latin American fintech-infrastructure company that turns the region's fragmented banking landscape into a single API. Through one integration, businesses can validate bank accounts, aggregate financial data, and move money across banks and borders. Founded in Montevideo, Uruguay in 2018, Prometeo has connected thousands of banking channels across more than a dozen countries in the Americas and raised a $13M Series A in 2024 led by Antler Elevate with PayPal Ventures and Samsung Next.
Increase
Increase is a banking infrastructure company that gives technology companies a programmatic way to store, move, and reconcile money. Through a single set of APIs it exposes the core U.S. payment rails - ACH, wires, real-time payments, FedNow, checks, and cards - with direct network connections and transparent access to the underlying data. Founded in 2020 by Stripe's first employee Darragh Buckley and based in Bend, Oregon, Increase is self-funded, became profitable in 2025, and processes hundreds of billions of dollars in payments each year for fintechs like Ramp, Check, and Pipe.
Knot
Knot is a New York merchant connectivity platform that lets banks, fintechs, and card issuers move their customers' cards on file across hundreds of online merchants - automatically. Through APIs like CardSwitcher, TransactionLink, AccountUpdater, and SubscriptionManager, Knot helps issuers win the top-of-wallet spot, cut payment declines, and surface SKU-level spending data, all without users manually re-entering their card details at Netflix, Amazon, PayPal, and more.