Coin Moebius

Overview

Coin Moebius is a thin browser core plus a verifier core, glued together by provider plug-ins. You bring the buy button. The router takes care of talking to the gateway and turning the gateway’s “they paid” signal into one shared shape your fulfillment code can rely on.

It is built for the JAMstack reality: a static front-end, a handful of serverless functions, and one webhook endpoint that handles every payment method you support. No storefront rental. No vendor lock-in. Add a provider when you need one. Remove it when you don’t.

Tiny core

Install only the providers you need

One callback

onSuccess for every gateway

Strict boundary

Browser core, server verifier — never mixed

Subscriptions

Normalized recurring-billing events across fiat providers

Install

Start with the core. The browser core is all you need to build against the API. Add the verifier on the server when you wire up your first webhook. Providers are entirely optional — install them only when you decide how you want to take payment.

npm install @aquarian-metals/coin-moebius

npm install @aquarian-metals/coin-moebius-server

npm install @aquarian-metals/coin-moebius-stripe

npm install @aquarian-metals/coin-moebius-cryptomus

npm install @aquarian-metals/coin-moebius-nowpayments

npm install @aquarian-metals/coin-moebius-coinbase-business

npm install @aquarian-metals/coin-moebius-paypal

npm install @aquarian-metals/coin-moebius-authorizenet

npm install @aquarian-metals/coin-moebius-square

npm install @aquarian-metals/coin-moebius-monero

npm install @aquarian-metals/coin-moebius-manual

Quick start

Two files: a tiny browser bootstrap that wires providers and listens for success, and a single webhook endpoint that verifies any provider you register. The README walks the rest of the surface.

import { createPaymentManager } from '@aquarian-metals/coin-moebius';
import createStripeProvider from '@aquarian-metals/coin-moebius-stripe';
import createCryptomusProvider from '@aquarian-metals/coin-moebius-cryptomus';
import { createMoneroProvider } from '@aquarian-metals/coin-moebius-monero';

const payments = createPaymentManager({
  providers: [
    createStripeProvider({ publishableKey: import.meta.env.VITE_STRIPE_KEY }),
    createCryptomusProvider(),
    createMoneroProvider({
      checkoutEndpoint: '/api/checkout/monero',
      statusEndpoint: '/api/payment-status',
    }),
  ],
});

payments.onSuccess((result) => {
  // Unlock the download. Update your DB. Send the receipt.
  console.log('Paid with', result.provider, result);
});

document.getElementById('buy').onclick = () => {
  payments.initiate({ productId: 'ebook-42', amount: 19.99, currency: 'USD' });
};

import { createVerifierRegistry } from '@aquarian-metals/coin-moebius-server';
import { createStripeVerifier } from '@aquarian-metals/coin-moebius-stripe/server';
import { createCryptomusVerifier } from '@aquarian-metals/coin-moebius-cryptomus/server';
import { createMoneroVerifier } from '@aquarian-metals/coin-moebius-monero/server';

const verifiers = createVerifierRegistry();

verifiers.register('stripe', createStripeVerifier({
  endpointSecret: process.env.STRIPE_WEBHOOK_SECRET,
}));

verifiers.register('cryptomus', createCryptomusVerifier({
  merchantUuid: process.env.CRYPTOMUS_MERCHANT_UUID,
  paymentApiKey: process.env.CRYPTOMUS_PAYMENT_API_KEY,
}));

verifiers.register('monero', createMoneroVerifier({
  hmacSecret: process.env.MONERO_HMAC_SECRET,
}).verify);

export default async function handler(req) {
  const event = await verifiers.verify(req.body, req.headers);

  if (event?.kind === 'payment' && event.status === 'success') {
    // Fulfill the order with one shared shape.
  }

  if (event?.kind === 'subscription') {
    // Handle lifecycle: created, renewed, canceled, payment_failed, updated.
  }

  return { statusCode: 200 };
}

Architecture

The flow is the same shape no matter which gateway you bolt on. The browser talks to a provider, the provider hands the user off to its checkout, and the gateway POSTs back to your webhook so the verifier can confirm payment and fulfill.

1. 1

   Your UI

   Render any buy button you like.

2. 2

   initiate()

   Core hands the order to the right provider.

3. 3

   Checkout

   Gateway hosts payment; user completes it.

4. 4

   Webhook

   Gateway POSTs to your verify endpoint.

5. 5

   verify()

   Server core checks signatures, normalizes payload.

6. 6

   Fulfill

   One shape. Unlock, ship, log, done.

For payments that take time to confirm like a NOWPayments invoice waiting for block confirmations, subscribeToStatus polls a tiny serverless endpoint until the webhook lands.

Packages

Every package follows the same shape. Browser providers expose initiate(); server providers expose a verifier and (where needed) a creator that holds gateway secrets.

Example project

The fastest way to see Coin Moebius end to end is the static site demo. It ships a Vite front-end with Stripe and Cryptomus providers, the matching Netlify functions, and the webhook glue. Clone it, set the env vars, and you have a working checkout.

Safety

• API keys for any provider that authorizes spend on your account stay on the server. The browser posts to a function you control.
• Webhook handlers should always call verify() before doing fulfillment work — signature checks live in the verifier.
• The SDK ships a PaymentStore interface and an in-memory reference adapter. Implement it against your own backing store for production use.

Contribute

Gateway APIs change. The Stripe, Cryptomus, NOWPayments, Monero, and manual packages are the reference implementations — we expect the community to bring everything else. Want Lightning, Solana, Zano, gold escrow, or a regional processor? Copy the template, write an initiate() and a verifier, publish it under your own scope.

Already shipping with Coin Moebius? Tell us and we will link to the things people are building.