Integrate OpenCart and Firstgiving

Trexle connects OpenCart to Firstgiving and 100+ other payment gateways using a single plugin for one time annual fee

Firstgiving and OpenCart Integration Guide

API Authentication
In order to submit requests against Firstgiving API, you must first signup as a API partner. Firstgiving will give you what we call an “application id” and a “security token”. This is similar to a username & password. You will identify your requests with your application token and security id on each request.

Take the credentials you just obtained from Firstgiving and navigate to Trexle dashboard, click Payments Gateways and select Firstgiving from the drop down menu as shown below.

Fill into your Firstgiving credential and click Add Gateway. Click the Activate button next to Firstgiving, and it will give you a success message and the button will turn into green. You should see something like below.

To integrate Firstgiving and OpenCart you need Trexle API keys

Trexle extension can be installed to your OpenCart store in two ways:

1st method

Download Trexle – OpenCart extension from Trexle GitHub repository

Go to your OpenCart admin panel, navigate to Extensions -> Extension Installer.
Then click the blue Upload button and provide the route to the Trexle extension you’ve just downloaded.


Click the blue Continue button. If successful, you should get a green “Success: You have installed your extension!” message.

2nd method

Go to your OpenCart Admin panel and then open the Extensions menu. You will see OpenCart Marketplace


Enter ‘Trexle’ in the search field and click on the Trexle extension displayed in the search results.

Click on the ‘Download’ tab and then on the ‘Install’ button.

Wait for the progress bar to notify you of the successful installation of the Trexle extension.

Finally, create a test product, logout from your admin session and test the customer checkout.

Test Card Data for Sandbox

  • ccNumber – 4457000100000009
  • ccType – VI
  • ccExpDateMonth – 01
  • ccExpDateYear – 18
  • billToAddressLine1 – 1 Main St.
  • billToCity – Burlington
  • billToState – MA
  • billToZip – 01803

Firstgiving Supported Countries

Firstgiving Supported Payment Processing Actions

✔ Purchase
✖ Authorize
✖ Capture
✖ Void
✔ Credit
✖ Recurring
✖ Card Store

Key Features

Credit Card Vault: securely store your customers sensitive credit card data using tokens.
Instant PCI-DSS Compliance: your customers credit card data never touches your site or server.
Multiple Gateway Support: Connect your OpenCart site to 100+ payment gateway

About Trexle

Trexle is a powerful online recurring subscription billing platform that integrate Firstgiving and other +100 payment gateways with OpenCart and other dozen of e-commerce platforms.

About Firstgiving

FirstGiving is an online fundraising service known for working with reputable nonprofit organizations. This fundraising site offers administration and reporting, branding, customized pages, event registration, social widgets, free fundraising webinars and more.
FirstGiving offers a variety of resources and tools for beginning campaigners and new users to its site. You can download calculators, fundraising guides, guides for involving young donors and case studies from other successful campaigns.

About OpenCart

OpenCart is one of the most popular and reliable open source e-commerce platforms for online shops. It is known for an extensive number of features and user-friendly interface and is very convenient solution for shop owners who are lunching their online business for the first time.