Custom payment gateway integration
Your customers pay the way they already trust. We add the gateway your market uses to checkout, wallet top-up and refunds in 6amMart, 6Valley, StackFood and Demandium.
Why this matters
Each of these scripts ships with a set of well-known gateways such as Stripe, PayPal, Razorpay, Paystack and Flutterwave. That list is wide, but payments are local. If most of your customers use a wallet, a bank transfer scheme or a card processor that is not on the list, you lose orders at the last step.
We integrate the gateway the same way the built-in ones work. It appears in the admin payment settings with its own keys and an on and off switch, shows up as an option at checkout in the apps and on the web, and reports back through a verified webhook so an order is only marked paid when the gateway confirms it.
What a gateway integration covers
- Admin settings for keys, mode (test or live) and status
- Checkout in the customer app and on the web storefront
- Wallet top-up where the script supports it
- Server-side payment verification with signed webhooks
- Failed and cancelled payment handling with a clean retry
- Refund support where the gateway API allows it
- Testing in the gateway sandbox and one live transaction check
- Documentation of the keys and webhook URL you need to set
How it works on each script
6amMart
One integration serves every module: grocery, food, pharmacy, shop, parcel and the service module.
6amMart customization6Valley
Checkout on the storefront and customer app, with seller settlement left to your existing payout rules.
6Valley customizationStackFood
Customer checkout, wallet top-up and restaurant subscription payments.
StackFood customizationDemandium
Booking payments, deposits and wallet top-up in the customer app and web app.
Demandium customizationGateways clients ask us for
Not on the list? If the gateway has a documented API and a sandbox, we can integrate it.
- PhonePe
- Cashfree
- PayU
- CCAvenue
- Tap Payments
- MyFatoorah
- Moyasar
- HyperPay
- Telr
- M-Pesa
- MTN MoMo
- Xendit
- Midtrans
- Fawry
- iyzico
- Mollie
- Authorize.net
- Khalti
- eSewa
- JazzCash
How a job runs
Send the brief
Tell us which script and version you run and what you want changed. Screenshots and reference apps help.
Get a fixed quote
You receive the scope, price and timeline in writing. Nothing starts until you approve it.
Test it on staging
We build on a staging copy and send test builds of the apps, so you try the change before it touches your live business.
Go live with handover
We deploy to your server, hand over the source code and give you a list of every file we changed.
Questions people ask first
What do you need from me to start?
A merchant account with the gateway, sandbox credentials, and access to a staging copy of your script. We handle the rest.
Is the integration secure?
Card data never touches your server. Customers pay on the gateway hosted page or SDK, and your server confirms the result through a signed webhook or a verification call before marking the order paid.
Can the gateway handle refunds from the admin panel?
If the gateway offers a refund API, yes. Otherwise refunds are issued in the gateway dashboard and recorded in the script.
Will my changes survive a script update?
Official updates replace core files, so custom code has to be re-applied on top of the new version. We keep custom work as separate as the code allows and hand you a list of every file we touched, which makes that re-apply quick. If you want us to do it, we quote it per update.
Other things we do for these scripts
App reskin
Your colours, type, icons and layouts across the Flutter apps and the web.
See how it worksCustom feature development
New flows, modules and business rules built into the script you own.
See how it worksSMS gateway integration
OTP and order alerts through your local SMS or WhatsApp provider.
See how it worksWorking on a specific script? See 6amMart customization, 6Valley customization, StackFood customization and Demandium customization.
Tell us what you want changed
Send the script, your version and the change you have in mind. You get a fixed quote back, usually within one business day.