Payment Gateway Integration Kits

Payment gateway integration kits for high risk and custom-built sites

Everything in this category solves the same problem: you need to take card
payments on a site a bank will not underwrite, and you need the money to arrive
somewhere you control. A payment gateway integration from this category gives
you that in a few hours of work, with no merchant account, no KYC file, and no
chargebacks to defend.

Your customer pays with Visa, Mastercard, American Express, Apple Pay, Google
Pay, Revolut, Cash App, iDEAL, Klarna, UPI or Interac. You receive a stablecoin
payout at your own address, usually within minutes. Settlement is final, which
is the whole point for a business the card networks treat as risky.

What is in this category

Two kinds of product, and the difference between them is simply whether you
want to write code.

The integration kit is source code: a PHP and Node.js SDK, a
callback handler that already solves the four failures that cost real money, a
working reference store, fifty-one offline tests, full documentation and a
Postman collection. It is for a custom site or application — a Laravel app, an
Express API, a bespoke booking engine, an internal billing tool, a marketplace.
You buy it once, you own the source, and there is no renewal. See the
high risk payment
gateway API page for how the integration works end to end.

The platform modules do the same job with no code at all, for
the four platforms most merchants already run:
PrestaShop,
OpenCart
and
WHMCS, plus
WooCommerce. Install, paste your key and your payout address, and you are
taking payments.

Choosing your payment gateway integration

Three questions settle it.

Do you run one of the four supported platforms? Then take the
module. A payment gateway integration you do not have to maintain is worth more
than one you wrote yourself, and the module is updated for you.

Is your site custom-built? Then take the integration kit.
Any language that can make an HTTPS request can use the API; the two SDKs are a
convenience rather than a requirement, and the documentation gives you the raw
endpoints.

How many sites will you deploy on? Each kit comes in three
editions — one production domain, ten, or unlimited with resale rights for
agencies delivering client work. Staging and local environments never count
against your licence, whichever edition you hold.

What every product here has in common

Whichever payment gateway integration you pick, the commercial terms and the
money flow are identical. Only the amount of code you write changes.

No merchant account and no underwriting file. Nothing passes through an
account in your name at a bank.
No chargebacks. A stablecoin payout cannot be clawed back by the
sender.
Card details never reach your server: your customer types them on the
provider’s own page, which keeps you in the lightest
PCI DSS self-assessment
bracket.
A one-time licence. No monthly fee, no renewal, free updates.
More than twenty-five payment methods, filtered automatically so a
customer is never offered one whose minimum they cannot reach.

Per-method rates are published on the
processing fees page, so you can
price your product before you write a line of code. If you are not sure which
payment gateway integration fits your project,
ask us before you buy — a pre-sales
question costs you nothing.