SaphraONE Checkout API

The SaphraONE Checkout API lets any website, app or platform accept stablecoin payments. Your server creates a checkout session, you send the buyer to the hosted payment page, and the money arrives in your business wallet as USDC on Arc, usually before the buyer has finished reading the receipt.

Who it’s for

• Online shops that want a “Pay with USDC” button next to cards, with no chargebacks and settlement in seconds instead of days.
• Platforms and marketplaces that sell digital goods, subscriptions or services to buyers around the world.
• Developers who want stablecoin payments without running nodes, watching the chain or handling wallets.

The flow in three steps

1. Create a session on your server

   POST /v1/checkout/sessions with the amount and where to send the buyer afterwards. The response has a url.

2. Redirect the buyer

   The buyer pays on SaphraONE’s hosted page with the method they prefer, then comes back to your success_url.

3. Confirm on your server, then fulfil

   Retrieve the session. When status is complete, ship the order. Never fulfil from the redirect alone.

curl https://sandbox.api.saphra.one/v1/checkout/sessions \
  -H "Authorization: Bearer sk_test_…" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: order-1042" \
  -d '{
    "amount": "25.00",
    "currency": "USDC",
    "description": "Order #1042",
    "client_reference_id": "1042",
    "success_url": "https://shop.example/thanks?session_id={CHECKOUT_SESSION_ID}",
    "cancel_url": "https://shop.example/cart"
  }'

Where to go next