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Guide

MoonPay crypto onramping

Magic Staff · March 29, 2024
MoonPay crypto onramping

Lowering the barrier to entry in cryptocurrency is one of the most vital pieces to onboarding the next generation of users and consumers. Traditionally, acquiring specific tokens involved interacting directly with centralized and decentralized exchanges. This can be a confusing and costly experience for some given that you have to take into account gas payments, security concerns and bad user experiences.

Crypto onramping tools such as MoonPay alleviate a lot of these concerns by providing a smooth and straight-forward process to buying cryptocurrency using debit or credit cards. A user can simply:

  • Select the cryptocurrency they want to purchase in their preferred currency
  • Add the preferred wallet address
  • Add some personal details for KYC (such as address)
  • Add payment details
  • Submit the transaction
  • Receive the cryptocurrency

This guide will walk through integrating the MoonPay onramp widget with a Next.js dApp created from the Magic CLI. We will be utilizing the MoonPay React library to purchase cryptocurrency in a sandbox environment.

#Project prerequisites

To follow along with this guide, you’ll need three things:

  1. A Magic Publishable API Key
  2. A web client
  3. MoonPay business account

You can get your Publishable API Key from your Magic Dashboard.

You can sign up and get a MoonPay business account to acquire the API keys needed to set up a sandbox environment for MoonPay and start testing onramping.

We’ll use the make-magic CLI tool to bootstrap a Next.js app with Magic authentication already baked into the client. You’re welcome to use your own client, but this tutorial and its accompanying code snippets assume the output of the make-magic CLI as the starting point. At the time of writing we are using make-magic version 4.12.0.

The make-magic CLI tool is an easy way to bootstrap new projects with Magic. To get started, simply run the command below in the shell of your choice. Be sure to replace <YOUR_PUBLISHABLE_API_KEY> with the Publishable API Key from your Magic Dashboard.

Bash
01npx make-magic \
02    --template nextjs-dedicated-wallet \
03    --network ethereum-sepolia \
04    --login-methods EmailOTP \
05    --publishable-api-key <YOUR_PUBLISHABLE_API_KEY>

This will bootstrap the starting point of the tutorial for you. In the scaffolded project, be sure to add your Magic Publishable API Key to the .env as NEXT_PUBLIC_MAGIC_API_KEY if you didn’t add it to the CLI command above.

From your MoonPay business dashboard, click on the "Developers" tab on the left hand side navigation. Copy the publishable key and add it to your .env as NEXT_PUBLIC_MOONPAY_API_KEY.

.env
01// Publishable API Key found in the Magic Dashboard
02NEXT_PUBLIC_MAGIC_API_KEY=pk_live_1234567890
03
04// The RPC URL for the blockchain network
05NEXT_PUBLIC_BLOCKCHAIN_NETWORK=ethereum-sepolia
06
07NEXT_PUBLIC_MOONPAY_API_KEY=pk_test_12345678901234567890

#Install additional project dependencies

In addition to the packages included in the scaffold produced by the make-magic CLI, you’ll also need to install @moonpay/moonpay-react to have access to the MoonPay onramping components.

Run the following command to install the required dependencies:

NPM
Yarn
01npm install @moonpay/moonpay-react

#Initialize MoonPay provider

Inside of src/pages/index.tsx, we need to wrap our application with the MoonPay provider. We do this by importing the MoonPayProvider and nesting it underneath the existing MagicProvider.

Since we’re using Next.js, it is recommended to import the provider dynamically. We will need to utilize dynamic from next/dynamic to do this. Inside the Home function, create a variable named MoonPayProvider:

Typescript
01import dynamic from 'next/dynamic';
02
03const MoonPayProvider = dynamic(
04  () => import('@moonpay/moonpay-react').then((mod) => mod.MoonPayProvider),
05  { ssr: false },
06);

Inside the return statement and below the Magic provider, wrap the rest of the application with the MoonPay provider:

Typescript
01<MagicProvider>
02  <MoonPayProvider
03    apiKey={process.env.NEXT_PUBLIC_MOONPAY_API_KEY || ""}
04    debug
05  >
06    // other components
07  </MoonPayProvider>
08</MagicProvider>

#Add MoonPayBuyWidget to UI

Now that we have MoonPay configured, we can now add the ability to use the onramping widget.

Similarly to the provider we created in the previous step, it is recommended to import the component dynamically to avoid errors. At the top of the src/components/magic/cards/SendTransactionCard.tsx, below the rest of the existing imports, add the following:

Typescript
01import dynamic from 'next/dynamic';
02
03const MoonPayBuyWidget = dynamic(
04  () => import('@moonpay/moonpay-react').then((mod) => mod.MoonPayBuyWidget),
05  { ssr: false },
06);

The widget itself can take a variety of props such as themes, currency codes and languages. To find out more on what customization is possible with the MoonPay buy widget, visit the onramp params page.

The first thing we need to do is create a variable named isVisible. This will determine if the onramp overlay is displayed. Underneath the other variables, add the following:

Typescript
01const [isVisible, setIsVisible] = useState<boolean>(false)

The component provides 4 different visual variants:

  • overlay: Overlays the widget on your existing interface
  • embedded: Embeds the widget into your existing interface
  • newTab: Opens in new tab
  • newWindow: Opens in new window

Lets add a button that will allow us to display the MoonPay widget and onramp some sandbox cryptocurrency.

In the return statement of the SendTransaction card, inside the getFaucetUrl() && conditional, replace the div with the following:

Typescript
01<div className="flex flex-col gap-2">
02  <a href={getFaucetUrl()} target="_blank" rel="noreferrer">
03    <FormButton onClick={() => null} disabled={false}>
04      Get Test {getNetworkToken()}
05      <Image src={Link} alt="link-icon" className="ml-[3px]" />
06    </FormButton>
07  </a>
08  <FormButton onClick={() => setIsVisible(true)} disabled={false}>
09    Buy Crypto with MoonPay
10    <Image src={Link} alt="link-icon" className="ml-[3px]" />
11  </FormButton>
12  <MoonPayBuyWidget
13    variant="overlay"
14    baseCurrencyCode="usd" // Currency to pay 
15    baseCurrencyAmount="100" // Pre-populated buy amount
16    defaultCurrencyCode="eth" // Default crypto selection
17    visible={isVisible}
18    onCloseOverlay={() => setIsVisible(!isVisible)}
19  />
20  <Divider />
21</div>

#Test MoonPay widget

Now that we’ve configured MoonPay and added the widget to our UI, we are ready to test the functionality in the provided sandbox environment.

Start your local development server and run through the Magic email OTP flow to log in. Once logged in you will notice a card displayed with the header “Send Transaction”. Click on this button to display the onramp widget. You will be instructed to select a cryptocurrency to buy along with the amount you want to buy and the preferred currency to pay for it.

For the sake of this guide, we will be purchasing some ETH. Once you have made your selections and clicked “Continue”, you will be prompted to either connect to the site using your browser wallet, or to paste in the wallet address you wish to receive the crypto for.

The following prompt will be to add the payment details. MoonPay provides us with dummy credit card information. Use the following card number, expiry date and CVC:

  • Credit card number: 4485 0403 7153 6584
  • Expiry date: 12/2030
  • CVC: 123

Follow through the steps to add credit card details and address.

Note: If you use a United States of America address you may be asked to add a Social Security Number. Please do not use a genuine SSN. Any 9 digit dummy value will work.

Once you’ve added this information we can now confirm the order. If successful, we will see the button text changes to display “View on block explorer”, meaning that the test transaction has been executed.

#Next Steps

You now know how to integrate MoonPay with Magic and include the following features:

  1. Simple authentication with Email OTP
  2. Buy funds using MoonPay onramp

Feel free to take a look at our final code solution. Take a look at the MoonPay React docs for more information on what is possible with Magic and MoonPay.

Let's make some magic!