v2.0 SYSTEM ONLINE

Monetization,
engineered.

We act as your Merchant of Record, embedding compliance directly into your checkout flow. Global tax, subscriptions, and fraud mitigation, solved definitively.

Start Building
$npm i @ismarpay/node
99.999%Uptime SLA
150+Countries Supported
PCI-DSS L1Security
T+1Global Payouts

Total abstraction of
the back-office.

Algorithmic Tax Engine

Cross-border sales without cross-border accounting. We detect the buyer's exact locus, apply localized VAT/GST natively, and remit it autonomously. You never touch tax forms.

Subscription State Machine

Deterministic handling of recurring payments. Smart dunning protocols, seamless proration on plan mutations, and native grand-fathering semantics.

Zero-Liability Fraud Protection

We assume 100% of chargeback liability. Anomalous transaction heuristics instantly block fraudulent vectors before they touch the ledger.

Developer Experience

Built for developers.

Go live in minutes with our SDKs, beautiful API, webhooks that just work, and a community of builders ready to help.

Your developer toolkit

Everything you need to integrate, shipped and ready.

REST APIv1
$ curl https://api.ismarpay.com/v1/checkout \
-H "Authorization: Bearer {sk_live_...}" \
-d '{"priceId":"prc_pro"}'
HTTP/2 200
{
"url": "https://checkout.ismarpay.com/..."
"status": "open"
}
Webhooks LIVE
checkout.completed16:02:44
subscription.created16:02:39
invoice.paid16:02:31
charge.succeeded16:02:18
refund.processed16:01:55
Clean, Simple Integration
checkout.ts
webhook.ts
1234567891011121314
// Initialize the SDK with your secret key
import { IsmarPay } from "@ismarpay/node";
const ismarpay = new IsmarPay(process.env.ISMARPAY_SECRET);
export async function POST(req: Request) {
const session = await ismarpay.checkout.create({
items: [{ priceId: "prc_enterprise", qty: 1 }],
customer: { email: "cto@acme.corp" },
successUrl: "https://app.com/success",
});
return Response.redirect(session.url);
}
Pricing

Honest, flat-rate pricing.

A single, transparent rate per transaction. No hidden currency conversion fees, zero monthly minimums, and strict volume discounts at scale.

Standard Rate

3.5%

+ 40¢ per successful transaction

All global taxes handled
100% Chargeback liability assumed
Subscription logic included
No setup or fixed monthly fees
Savings Calculator

Don't overpay for your own success.

LemonSqueezy takes 5% + 50¢. We take 3.5% + 40¢. See how much of your hard-earned money stays with you.

Monthly Revenue$100
LemonSqueezy5% + 50¢
$5.50
Ismarpay3.5% + 40¢
Your Total Fee$3.90
Stripe Fees (Paid by us)$3.20
Our Net Profit$0.70
Extra Profit$1.60 /mo