Connect your gateway, without breaking checkout.
Gateway integration is the process of connecting your payment gateway to your website, shopping cart, checkout plugin, invoice tool, or custom payment flow.
We help merchants connect Authorize.net and NMI to the systems they already use, plug in the API keys, adjust AVS and fraud settings, run test transactions, and go live with little to no downtime.
Connect payments to the platforms merchants already use.
The gateway is only useful when it is connected correctly. We help connect the payment gateway to the checkout, plugin, software, or custom flow the merchant needs to run payments.
WooCommerce integration.
Connect Authorize.net or NMI to WooCommerce using the right plugin, API keys, transaction settings, and checkout configuration.
- Plugin setup and gateway connection
- API login and transaction key placement
- AVS, CVV, and fraud setting review
- Test order before going live
Shopify integration.
Shopify can be more restrictive than WordPress, so the setup depends on the merchant’s approved gateway path, app options, and business type.
- Review gateway compatibility
- Confirm approved app or connection path
- Help avoid unsupported payment setups
- Test checkout before replacing current payments
Custom API integration.
Custom websites may need API credentials, hosted payment fields, webhook behavior, tokenization, or developer support before launch.
- API key and token setup
- Sandbox and live mode review
- Developer handoff support
- Checkout testing before launch
BigCommerce integration.
BigCommerce merchants may need gateway settings, payment method mapping, test orders, and fraud settings reviewed before the switchover.
- Gateway selection support
- Checkout configuration review
- Fraud and AVS setting help
- Test transaction support
Wix integration.
Wix setup depends on available payment connection options, business type, and whether the merchant can connect the approved gateway cleanly.
- Review payment connection options
- Confirm gateway availability
- Help with setup limitations
- Test the payment flow
Invoice and virtual terminal setup.
Not every merchant needs a full website checkout. Some merchants need invoices, payment links, phone orders, or a virtual terminal.
- Invoice link setup
- Virtual terminal access
- Card not present payment support
- Receipt and billing descriptor review
Gateway integration, explained in plain english.
A payment gateway is the secure bridge that sends card payments to your merchant account. A gateway integration is how that bridge gets connected to your website, checkout plugin, cart, invoice tool, or custom software.
In simple terms, the gateway is the tool. The integration is the setup work that makes the tool actually function inside your payment flow.
Confirm the platform.
We look at what the merchant uses to sell, such as WooCommerce, Shopify, BigCommerce, Wix, custom checkout, invoice links, or virtual terminal.
Connect the gateway.
We connect Authorize.net or NMI using the correct plugin, API credentials, gateway settings, or developer connection path.
Set fraud controls.
AVS, CVV, velocity rules, duplicate checks, and gateway fraud settings should be reviewed before the first real order goes through.
Test before launch.
We test checkout behavior, approvals, declines, receipts, settlement flow, and customer experience before switching payments live.
Make the switch without taking checkout offline.
A good integration plan avoids rushing. The goal is to connect the new gateway, test the flow, confirm settings, and switch payments only when the merchant is ready.
Keep current payments active.
When possible, the current checkout should stay active while the new gateway setup is prepared and tested.
Test the new connection.
Test transactions help confirm the gateway, website, AVS, CVV, receipts, and order records are working before going live.
Switch when ready.
The merchant should switch only after the integration is confirmed, settings are reviewed, and checkout behavior makes sense.
Integration terms made simple.
These are the technical terms merchants usually hear during gateway integration. They sound complicated, but the meaning is simple.
| Term | Simple meaning | Why it matters |
|---|---|---|
| Gateway integration | The setup that connects your gateway to your website, plugin, cart, or software. | Without the integration, the gateway is not connected to the checkout customers use. |
| Plugin | A website add-on that lets your checkout connect to a gateway. | WooCommerce and WordPress often use plugins to connect Authorize.net or NMI. |
| API key | A secure connection code that lets your website talk to the gateway. | If the API key is wrong, payments may fail or the checkout may not connect. |
| Transaction key | A secure gateway credential used to send payment transactions. | It helps authorize the connection between your website and the gateway. |
| Sandbox mode | A test environment used before real payments go live. | It helps confirm the setup before real customer transactions are processed. |
| Live mode | The real payment environment where customer transactions are processed. | This should only be used once testing is complete and the settings are correct. |
| Webhook | A notification that sends payment updates between systems. | It can help your website update order status after payment events happen. |
Common integration issues we help avoid.
Most payment integration problems come from mismatched settings, wrong credentials, unsupported plugins, or fraud filters that are either too loose or too strict.
Wrong API keys.
If the credentials are copied wrong or placed in the wrong field, the checkout may fail even if the merchant account is active.
Test mode left on.
Some checkouts fail because the site is still in sandbox mode instead of live mode after testing is complete.
Fraud rules too strict.
AVS, CVV, and velocity rules can block real customers if they are set too aggressively without reviewing checkout behavior.
No test order.
A real test flow helps catch issues with approvals, declines, receipts, order status, settlement, and customer notifications.
Gateway integration checklist.
This is the simple version of what should be reviewed before a merchant switches payments live.
| Step | What gets checked | Why it matters |
|---|---|---|
| Platform review | Website, cart, checkout plugin, invoice tool, or custom software. | The integration path depends on what the merchant uses to accept payments. |
| Gateway connection | Authorize.net or NMI credentials, plugin settings, API fields, and live mode access. | The checkout has to send transactions to the correct gateway account. |
| Fraud settings | AVS, CVV, duplicate checks, velocity limits, review rules, and decline behavior. | Fraud controls should reduce risk without blocking too many real customers. |
| Test transaction | Approved payment, declined payment, receipt, order status, refund flow, and settlement behavior. | Testing helps catch issues before customers experience checkout problems. |
| Go live | Live mode, active gateway, correct payment method display, and customer-facing checkout review. | The merchant should launch only when the payment flow is confirmed. |
Gateway integration questions.
These are the main questions merchants ask when connecting Authorize.net or NMI to their checkout.
What is a gateway integration?
A gateway integration is the setup that connects your payment gateway to your website, shopping cart, checkout plugin, invoice tool, or custom payment software.
Is a gateway integration the same as a payment gateway?
No. The gateway is the secure payment tool. The integration is the connection between that gateway and the software your customers use to pay.
Can you connect Authorize.net and NMI?
Yes. We help merchants connect Authorize.net and NMI to compatible websites, plugins, invoice tools, virtual terminals, and payment workflows.
How long does the setup take?
Simple setups can often be completed quickly once gateway access, website access, plugin access, and API credentials are ready. Custom websites, unsupported carts, or advanced routing setups can take longer.
Will my checkout go down during setup?
The goal is little to no downtime. In many cases, the new gateway can be connected and tested before the merchant switches the live checkout over.
What information is needed to connect the gateway?
Most integrations need gateway login access, API credentials, website or plugin access, merchant account details, and the correct fraud settings for the business type.
What should be tested before going live?
Test an approved payment, a declined payment, AVS behavior, CVV behavior, receipt delivery, order status, refund flow, settlement behavior, and customer checkout experience.
Need your gateway connected correctly?
I can help you connect Authorize.net or NMI to your website, cart, plugin, invoice tool, or custom checkout and make sure the payment flow is tested before it goes live.