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API Reference

About Fuse & Getting Started

Take a quick tour of our gateway and find the right integration method for your solution

Learn about Smartpay Fuse

Developer Guides

Developer guides

View feature-level guides that contain API implementation prerequisites and use-case information.

See our guides

Hello, World!

REST API reference

View sample code and field descriptions. Send requests to the sandbox and see the responses.

Visit the API reference

Find your journey by roles

Merchants

Get easy-to-implement tools to accept payments

Developers

Integrate with our products to begin accepting payments

 

Technology  partners

Enhance your payment solutions with pre-built integrations from our partner ecosystem,or create your own.

Start building in the sandbox

Sign up for a free sandbox account to test, develop and innovate in a risk free environment.Get immediate access to start building the payment experience you need.

Take payments anywhere — 
no code required

Whether you do business online or in-person, accept payments seamlessly with secure, no-code solutions   to start taking payments fast.

Developer resources

Explore our documentation to easily integrate secure payment solutions for businesses of all sizes.

Search for common transaction responses.

Use testable card numbers to verify before going live.

Start building with confidence

Explore our APIs and SDKs to easily integrate secure, low-code payment solutions for businesses of all sizes.