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 Documentation

Process transactions using Genius and Genius Handheld

View Documentation

Cayan Checkout

Process transactions using simple script based shopping cart solution.

View Documentation

Merchantware4

Merchantware4 web service documentation and resources

View Documentation

Transport 4

Process transactions using the Transport hosted payments page

View Documentation

Store and Forward

Offline transaction processing
with Store and Forward

View Documentation

Knowledge Base

Tips and best practices for
integrating with Genius.

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

Some Best Practices for Securing Your E-Commerce Site or Cloud Based Point of Sale | 03/28/17

Dominic Lachowicz

If you are a merchant, or you are a provider helping merchants accept payments - be it in store or online - you are are still in scope for the requirements and obligations of PCI-DSS. Read on for a number of best practices that many of Cayan’s partners employ and can help protect your sites - and mitigate the damages - from various common attack vectors.

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Part #3: How Cayan helps protect merchants from costly downtime | 03/10/17

Dominic Lachowicz

In the third and final article in this series, we'll dive into detail about Cayan's high availability architecture, disaster recovery and redundancy, for how we can deliver best in class uptime and service.

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Part #2: How Cayan helps protect merchants from costly downtime | 03/08/17

Dominic Lachowicz

High availability, and how merchant can help reduce downtime for their credit card systems

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