API documentation

This comprehensive guide will help you integrate and make the most of our powerful API.

Fueling API

The Circle K Fueling External API facilitates fuel purchasing by utilizing user identity and fuel card for authentication and payment ...

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The Site Location API enables you to discover the closest Circle K gas stations, offering details about station products and operating hours.

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The API provides a way to effortlessly pay for various services or products using the Circle K fleet card.

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Circle K’s customers can subscribe to a number of alert types on Card E-Services portal including **transaction feed**. Customers are expected ...

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This API provides operations for managing Circle K Fleet Cards, with functionalities such as blocking or ordering new cards.

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