Developers API

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

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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

Merchantware

Merchantware 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

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

FinTech Belfast | 04/30/18

Scott Wallace

Like a lot of good ideas, it all started with a chance conversation in the office over a coffee. We were discussing how odd it was that given how many local companies work on some aspect of financial technology, Belfast is weirdly under represented in that arena on the local meetup scene.

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A couple of quick TLS suggestions for Java developers | 04/20/18

Dominic Lachowicz

A couple of quick TLS suggestions for Java developers.

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Using Rebex to Support TLS 1.2 in Legacy .NET Environments | 04/16/18

Dominic Lachowicz

Many popular points of sale are .NET apps that run on Windows. As these points of sale tend to have expected lifespans of 10+ years, our industry is challenged with how to support modern encryption protocols on not-so-modern operating systems that don't support those protocols. Frameworks like Rebex fill that niche.

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