Simplifying payment experiences worldwide

Developer Resources

Here you’ll find our development resources that enable our clients and partners to digitally engage with Change solutions.

Vertexon API Sandbox and Documentation

Our Vertexon API Sandbox is now publicly available allowing people to build apps and integrations for cardholder services.

It’s free to use, you can sign up and access the sandbox here

Vertexon API Functionality

We’ll be releasing more API features as they become available. If you’re interested in learning more about our Vertexon API Sandbox, please get in touch via our Contact Us page.

CustomerCustomer Management
CardCard Management and Services
ProductsDebit or Prepaid Card Product
Account-transAccount Transactions of Cards
AccountAccount Management
AuthorisationsISO Based Authorisations
TransactionsISO Based Financial Transactions
ManagementSetup of Other Customer Properties
SystemCode and Key Definitions
Vertexon Cardholder API Functions
PaySim API

Our recently launched PaySim API allows banks, payment processors and fintechs to automate their load and regression testing for financial transactions.
If you’re interested learning more about our PaySim API, please get in touch via our Contact Us page.

“API capability is the greatest enabler for fintechs and banks to accelerate product development and release timelines.”

Arnold Lee



Don’t forget to check out our product roadmaps where you will find our existing features, new and upcoming releases.

Vertexon Roadmap

Learn More

PaySim Roadmap

Learn More