Widget & Payment Button

Embed a checkout widget or share a hosted payment link - no backend required.

Query Parameters

Parameter	Required	Description
publicKey	Yes	Your Nanswap Pay public key from the dashboard
priceAmount	Yes	Invoice amount (e.g. 10)
priceCurrency	Yes	Fiat or crypto currency code (e.g. USD, EUR, XNO)
shopName	No	Your store name shown on the checkout page
defaultCurrency	No	Pre-select a crypto for the customer (e.g. XNO)
invoiceId	No	Your internal order reference, returned in webhooks
callbackUrl	No	URL to receive payment status webhooks (POST)

Embeddable Widget

Drop an <iframe> anywhere on your page for an inline checkout experience.

<iframe
  src="https://nanswap.com/pay/iframe-pay/pay?publicKey=YOUR_PUBLIC_KEY&priceAmount=10&priceCurrency=USD&shopName=My+Shop"
  width="100%"
  height="750px"
  style="border:none"
  allow="clipboard-write"
  title="Nanswap Pay"
></iframe>

Payment Button

A branded button that links to the hosted checkout page. Works anywhere HTML is supported.

<a href="https://nanswap.com/pay/invoice?publicKey=YOUR_PUBLIC_KEY&priceAmount=10&priceCurrency=USD&shopName=My+Shop"
   target="_blank" rel="noopener">
  <img src="https://images.nanswap.com/logo/pay-in-crypto-white.svg"
       alt="Pay with Nanswap" style="width:200px">
</a>

Or share the raw URL directly:

https://nanswap.com/pay/invoice?publicKey=YOUR_PUBLIC_KEY&priceAmount=10&priceCurrency=USD&shopName=My+Shop

Get your public key

Go to dashboard →