Developers API

Scalable, flexible & secure — Our open API makes integration a breeze.

API Documentation

In order to maintain transparency and allow developers to integrate with Cayan, we’ve opened the API documentation for various solutions offered by Cayan. If you’re interested in integrating with any of our solutions, please contact us today.

Genius Transaction Processing

Process transactions using the Genius device

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Genius Line Item Display

Display line item details on the Genius Device

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Genius Your Way

Use the CED as a standard peripheral

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Merchantware 4

Merchantware4 web service documentation and resources

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Cayan Checkout

Process transactions using simple script based shopping cart solution.

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Transport 4

Process transactions using the Transport hosted payments page

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Store and Forward

Offline transaction processing with Store and Forward

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Knowledge Base

Tips and best practices for integrating with Genius.

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Resources

Additional documentation resources and downloads

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Interested in what Cayan’s developers are up to? Check out the Developers Blog

Cayan Participated in the 2016 Hour of Code | 12/08/16

Dominic Lachowicz

The Hour of Code is a global movement by Computer Science Education Week and Code.org. It started as a one-hour introduction to computer science, designed to demystify "code", to show that anybody can learn...

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Cayan's SHA-1 Deprecation Policy | 11/01/16

Dominic Lachowicz

Many merchants have recently received notices from their acquirers regarding their discontinuing support of a legacy encryption protocol. Cayan and its merchants are prepared for this change.

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How to protect your API clients against breaking changes | 10/03/16

Dominic Lachowicz

Have you ever wondered how to evolve your API without worrying that you'll break your API clients? Find out how Cayan does it.

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