Payment Gateway

Set up your store

Create a merchant account first. Then install the plugin and paste your credentials.

1. Request access

Start here if you do not already have a Payment Gateway API Base URL and Merchant Token. The request page runs an immediate site-readiness review and returns feedback before a processor account is created.

Request access Compliance brand guide Merchant onboarding guide Business model thesis Merchant agreement Retatrutide formatting guide Shopify bridge setup

How access works

Request access: submit your business and website for review.
Site readiness review: the platform checks whether your public site is ready for supported processing.
Account setup: approved merchants receive hosted onboarding and gateway credentials.
Plugin install: paste your credentials into WooCommerce or your custom site integration.

Supported categories include research biochemical materials and coaching / educational services.

2. Download

Download WooCommerce Plugin Download Custom Site SDK

3. WooCommerce install

Open WordPress admin.
Go to Plugins → Add New → Upload Plugin.
Upload payment-gateway-woocommerce-plugin.zip.
Activate Payment Gateway.
Go to WooCommerce → Settings → Payments → Payment Gateway.
Paste your Payment Gateway API Base URL.
Paste your Payment Gateway Merchant Token.
Choose Inline card fields in WooCommerce checkout for modern Checkout Blocks, or Payment Element page fallback for older checkout flows.
Click Save changes.
Reload the settings page.
Click Test Payment Gateway connection.

Apple Pay and Google Pay can appear in the on-site flow when the customer's browser/device and the merchant domain are eligible.

4. Values to paste

API Base URL Shown after onboarding Merchant Token Provided by the platform after onboarding

5. Connection test results

Token valid: your plugin is talking to the platform.
Callback delivery passed: the platform can update WooCommerce orders.
Processor account failed: the merchant account is not ready yet.
Nothing shows: install plugin version 3.3.0 or newer, save settings, reload, and test again.

6. Custom site setup

Give the Custom Site SDK ZIP, API Base URL, and Merchant Token to the developer or AI agent building the site.

Create a server checkout route with createGatewayServerClient.
Create a callback route with verifyGatewayCallbackSignature.
Keep the Merchant Token server-side only.
Use the PaymentIntent helper once per order for on-site Payment Element checkout.
Use hosted redirect only as the fallback flow.

7. Shopify bridge setup

Use the Shopify bridge when a merchant needs an offsite/manual payment workaround without a native Shopify payment app approval.

Read Shopify bridge setup