Welcome to the 1stPay Gateway Rest API Portal!

Here, you will find everything you need to integrate the 1stPay Gateway into your payment application.

This resource is designed to make the integration process a simple one, for both card present and card not present transactions.

To date, our integration code and the team behind it, have helped countless business owners, from retail to e-commerce, complete successful payment integrations with simplicity and speed.

The 1stPay Gateway supports numerous transaction types, including credit (Visa, Mastercard, American Express and Discover) and ACH/e-check. 1stPay also includes an important feature that is highly valued by business owners everywhere – a secure digital vault that encrypts and stores cardholder information, giving your business the option to accept recurring payments.

This site is organized by API call type and covers the entire workflow of what you will need to do to code, test, validate and begin processing payments with us.

Our documentation is available in multiple languages, including PHP, Python, Ruby and WCF.

Let’s get started!