CheckoutWithCard

The CheckoutWithCard element embeds a form on your app that accepts credit/debit card, Apple Pay, and Google Pay.

This component also handles:

• Apple Pay and Google Pay
• Bot and anti-fraud detection
• 3D Secure (if necessary)
• Buyer KYC (if necessary)

Demo

👍 Try a demo!

React Integration

1. Install the React SDK:

   npm install @paperxyz/react-client-sdk

   yarn add @paperxyz/react-client-sdk
2. On your frontend, render the CheckoutWithCard component with your configs.

Example code

import { CheckoutWithCard } from "@paperxyz/react-client-sdk";

<CheckoutWithCard
  configs={{
    // Registered contract ID
    contractId: "MY_CONTRACT_ID",
    // Buyer wallet address
    walletAddress: "0x...",
    // Mint method (for custom contracts only)
    mintMethod: {
      name: "claimTo",
      args: {
        _to: "$WALLET",
        _quantity: "$QUANTITY",
        _tokenId: 0,
      },
      payment: {
        value: "0.1 * $QUANTITY",
        currency: "ETH",
      },
    },
  }}
  onPaymentSuccess={(result) => {
    console.log("Payment successful:", result);
  }}
/>;

CheckoutWithCard props

Name	Type	Description
configs *	object	A list of configs to create your card checkout element. Fields are the same as the ones found in the Create Checkout Elements Client Secret API.
onPaymentSuccess *	({ transactionId: string; }) => void	This method is called after the payment has been submitted for processing. This payment may still be rejected by the cardholder's bank.
onError	(PaperSDKError) => void	This method is called when an error is encountered.
onPriceUpdate	({ quantity: number; unitPrice: PriceDetail; networkFees: PriceDetail; serviceFees: PriceDetail; total: PriceDetail; }) => void	This method is called when the price is updated or loaded for the first time. This summary is helpful to show a granular price breakdown. Where PriceDetail is { display: string; valueInSubunits: number; currency: string; }
locale	enum Valid values: en, fr, es, it, de, ja, ko, zh	The language to show text in. Defaults to en.
options	object	Customize component styling. See Customization.

Javascript Integration

1. Install the Javascript SDK with your preferred package manager.
   • npm install @paperxyz/js-client-sdk
   • yarn add @paperxyz/js-client-sdk
2. Call createCheckoutWithCardElement to insert the iframe on your page. Pass the configs to this component.
   1. If you don't provide elementOrId, this call returns an iframe element for you to insert into your page.

Example code

import { createCheckoutWithCardElement } from "@paperxyz/js-client-sdk";

// Assume a container exists:
//
//      <div id="paper-checkout-container" width="380px" />
//
createCheckoutWithCardElement({
    configs: {
    contractId: "MY_CONTRACT_ID",
    walletAddress: "0x...",
  }
  elementOrId: "paper-checkout-container",
  appName: "My Web3 App",
  options,
  onError(error) {
    console.error("Payment error:", error);
  },
  onPaymentSuccess({ id }) {
    console.log("Payment successful.");
  },
});

// Alternatively, insert the iframe programmatically:
//
//      const iframe = createCheckoutWithCardElement(...)
//      document.getElementById('paper-checkout-container').appendChild(iframe);

Props

Name	Type	Description
configs *	object	A list of configs to create your card checkout element. Fields are the same as the ones found in the Create Checkout Elements Client Secret API.
elementOrId	string | HTMLElement	If provided, the iframe will be appended to this element. You can pass in the DOM element or the id associated with the element. A minimum width of 380px is recommended.
appName	string	If provided, the wallet card will display your appName.
locale	enum (Valid values: en, fr, es, it, de, ja, ko, zh)	The language to show text in. Defaults to en.
options	object	Customize component styling. See Customization.
onLoad	() => void	This method is called when the iframe loads.
onError	(error: PaperSDKError) => void	This method is called when an error occurs during the payment process.
onPaymentSuccess	(props: { transactionId: string }) => void	This method is called when the buyer has successfully paid.
onReview	(props: { cardholderName: string, id: string }) => void	This method is called after the user enters their card details.

Customization

The optional options argument allows you to customize the component's styling. All customization fields are optional.

options object

Name	Type	Description
colorPrimary	string (In hex, e.g. #cf3781)	The primary brand color for buttons and links.
colorBackground	string (In hex, e.g. #cf3781)	The background color of the page.
colorText	string (In hex, e.g. #cf3781)	The color for text on the page and UI elements.
borderRadius	number (In px, e.g. 0 for sharp corners, 12 for rounded corners, 24 for pill shape)	The roundness of buttons and input elements.
inputBorderColor	string (In hex, e.g. #cf3781)	The border color of the input field.
inputBackgroundColor	string (In hex, e.g. #cf3781)	The background color of the input field.

Examples

Here's an example component with the following props:

{
    colorBackground: '#fefae0',
    colorPrimary: '#606c38',
    colorText: '#283618',
    borderRadius: 6,
    inputBackgroundColor: '#faedcd',
    inputBorderColor: '#d4a373',
}

Important Notes

How do I prevent the 3D Secure or KYC modal from popping up behind my other frontend components?

The SDK uses a z-index of 10000 for these modals. If they are appearing behind other components, please lower your other components' z-index values.