@coinbase/cbpay-js

The Coinbase Pay JS SDK provides a fiat onramp experience for approved partners. Wallet providers and dapps can leverage Coinbase Pay and let their users top up their self-custody wallets.

Documentation

See the Coinbase Pay documentation for configuration options. Developers interested in using Coinbase Pay will need to contact the Coinbase Pay team to get their domains/extension IDs added to the Coinbase Pay allowlist. Please contact the Coinbase Pay team by filling this form and selecting “Coinbase Pay SDK” in the product dropdown menu.

Installation

With yarn:

yarn add @coinbase/cbpay-js

With npm:

npm install @coinbase/cbpay-js

The package is distributed as both ESModules and CommonJS. To use the CommonJS output, the regenerator-runtime package will also need to be installed:

With yarn:

yarn add regenerator-runtime

With npm:

npm install regenerator-runtime

Basic example

import { initOnRamp } from '@coinbase/cbpay-js';

const options = {
  appId: 'your_app_id',
  widgetParameters: {
    destinationWallets: [{
      address: '0xabc123',
      blockchains: ['ethereum', 'avalanche-c-chain'],
    }],
  },
  closeOnExit: true,
  closeOnSuccess: true,
  embeddedContentStyles: {
    target: '#target-area',
  },
  onExit: () => {
    alert('On Exit');
  },
  onSuccess: () => {
    alert('On Success');
  },
  onEvent: (metadata) => {
    console.log(metadata);
  },
}

// Initialize the CB Pay instance
let onrampInstance;
const instance = initOnRamp(options, (error, instance) => {
  onrampInstance = instance;
});

// Open the widget when the user clicks a button
onrampInstance.open();

// When button unmounts destroy the instance
onrampInstance.destroy();

React example

import type { CBPayInstanceType, InitOnRampParams } from '@coinbase/cbpay-js';
import { initOnRamp } from '@coinbase/cbpay-js';

const PayWithCoinbaseButton: React.FC = () => {
  const [onrampInstance, setOnrampInstance] = useState<CBPayInstanceType | undefined>();

  useEffect(() => {
    initOnRamp({
      appId: 'your_app_id',
      widgetParameters: {
        destinationWallets: [
          {
            address: '0xabc123',
            blockchains: ['ethereum', 'avalanche-c-chain'],
          },
        ],
      },
      onSuccess: () => {
        console.log('success');
      },
      onExit: () => {
        console.log('exit');
      },
      onEvent: (event) => {
        console.log('event', event);
      },
      experienceLoggedIn: 'popup',
      experienceLoggedOut: 'popup',
      closeOnExit: true,
      closeOnSuccess: true,
    }, (_, instance) => {
      setOnrampInstance(instance);
    });

    return () => {
      onrampInstance?.destroy();
    };
  }, []);

  const handleClick = () => {
    onrampInstance?.open();
  };

  return <Button onClick={handleClick} disabled={!onrampInstance}>Buy with Coinbase</Button>;
};

React-Native example

Prerequisites

yarn add react-native-url-polyfill

import React, { useMemo } from 'react'
import { WebView } from 'react-native-webview'
import { generateOnRampURL } from '@coinbase/cbpay-js'
import 'react-native-url-polyfill/auto'

const CoinbaseWebView = ({ currentAmount }) => {
  const coinbaseURL = useMemo(() => {
    const options = {
      appId: 'your_app_id',
      destinationWallets: [
        {
          address: destinationAddress,
          blockchains: ['solana', 'ethereum'],
        },
      ],
      handlingRequestedUrls: true,
      presetCryptoAmount: currentAmount,
    }

    return generateOnRampURL(options)
  }, [currentAmount, destinationAddress])

  const onMessage = useCallback((event) => {
    // Check for Success and Error Messages here
    console.log('onMessage', event.nativeEvent.data)
    try {
      const { data } = JSON.parse(event.nativeEvent.data);
      if (data.eventName === 'request_open_url') {
        viewUrlInSecondWebview(data.url);
      }
    } catch (error) {
      console.error(error);
    }
  }, [])

  return (
    <WebView source={{ uri: coinbaseURL }} onMessage={onMessage} />
  )
}

export default CoinbaseWebView

Aggregator Example

Review the Coinbase Cloud docs for how to produce the parameters for use within an on ramp aggregator.

import type { CBPayInstanceType, InitOnRampParams } from '@coinbase/cbpay-js';
import { initOnRamp } from '@coinbase/cbpay-js';

const PayWithCoinbaseButton: React.FC = () => {
  const [onrampInstance, setOnrampInstance] = useState<CBPayInstanceType | undefined>();

  useEffect(() => {
    initOnRamp({
      appId: 'your_app_id',
      widgetParameters: {
        destinationWallets: [
          {
            address: '0xabc123',
            blockchains: ['ethereum', 'avalanche-c-chain'],
          },
        ],
        // Aggregator params are ignored unless they are all provided.
        // defaultNetwork is the exception - it's optional.
        quoteId: 'quote_id_from_buy_quote_api',
        defaultAsset: 'asset_uuid_from_buy_options_api',
        defaultNetwork: 'network_name_from_buy_options_api',
        defaultPaymentMethod: 'payment_method_from_buy_options_api',
        presetFiatAmount: 50,
        fiatCurrency: 'payment_currency_from_buy_options_api',
      },
      onSuccess: () => {
        console.log('success');
      },
      onExit: () => {
        console.log('exit');
      },
      onEvent: (event) => {
        console.log('event', event);
      },
      experienceLoggedIn: 'popup',
      experienceLoggedOut: 'popup',
      closeOnExit: true,
      closeOnSuccess: true,
    }, (_, instance) => {
      setOnrampInstance(instance);
    });

    return () => {
      onrampInstance?.destroy();
    };
  }, []);

  const handleClick = () => {
    onrampInstance?.open();
  };

  return <Button onClick={handleClick} disabled={!onrampInstance}>Buy with Coinbase</Button>;
};

Contributing

Commit signing is required for contributing to this repo. For details, see the docs on contributing and commit-signing.