Fidel API is a technology platform that provides developers with tools to access real-time payment card data from Visa, Mastercard, and American Express. The platform enables businesses to connect directly with users' payment cards to create personalized card-linked offers, loyalty programs, and real-time customer engagement without the need for POS integrations. With a focus on security and compliance, Fidel API offers tokenization and data encryption to protect sensitive information. The platform supports various use cases, including expense management, rewards, and financial insights, aiming to enhance customer experiences and drive business growth.