Node.js SDK

Set it up in 4 steps

1. 1

   Copy cryptain.mjs into your project.

2. 2

   Create an API key in Cryptain (Stores → your store).

3. 3

   Create an invoice and send the customer to its checkout_url.

4. 4

   Verify webhooks with verifyWebhook() before fulfilling the order.

import { Cryptain } from './cryptain.mjs';
const c = new Cryptain('https://cryptain.net', 'pk_...', 'sk_...');
const invoice = await c.createInvoice({ amount: '25.00', currency: 'USD', order_id: '1001' });
res.redirect(invoice.checkout_url);