Generating a URL

Coinbase Pay SDK can generate a URL that is launched by a browser mechanism (for example, a link or button on web, or a webview, or linking on mobile) as an alternative to integrating Coinbase Pay through initOnRamp.

This approach is designed for those who want to use the Coinbase Pay functionality by embedding the SDK, but want additional control over how the experience is triggered.

generateOnRampURL Example

import { generateOnRampURL } from "@coinbase/cbpay-js";

const onRampURL = generateOnRampURL({
  appId: "1dbd2a0b94",
  destinationWallets: [
    { address: "0xabcdef", blockchains: ["solana"] }
    { address: "0x123456", assets: ["ETH", "USDC"] }
  ]
});

You can use a generated URL to launch a new tab, webview, etc., with either the provided buttons or text.

<a href={onRampURL} target="_blank">Coinbase Pay</a>

generateOnRampURL Parameters

The following table outlines the parameters supported in the generateOnRampURL function:

Parameter	Req'd	Type	Description
destinationWallets	Yes	DestinationWallet[]	Array of DestinationWallet objects which define blockchain types (blockchains) and destination addresses (address). Format: {address: string; blockchains?: string[]; assets?: string[]; supportedNetworks?: string[]}[]
appId	Yes	String	Unique short-string ID provided to partners by the Coinbase Pay team
defaultNetwork	No	String	Default network that should be selected when multiple networks are present
presetCryptoAmount	No	Number	Preset crypto amount value.
presetFiatAmount	No	Number	Preset fiat amount value (for USD, CAD, GBP, EUR only). Ignored if presetCryptoAmount is also set.
defaultExperience	No	'send', 'buy'	Default visual experience: either (1) Transfer funds from Coinbase ('send') or (2) Buy assets ('buy')
handlingRequestedUrls	No	boolean	Prevents the widget from opening URLs directly & relies on onRequestedUrl entirely for opening links

DestinationWallet Parameters

A DestinationWallet object accepts the following parameters:

Parameter	Req'd	Type	Description
address	Yes	String	Destination address where the purchased tokens will be sent.
blockchains	No	String[]	List of blockchains enabled for the associated address. All tokens available per blockchain are displayed to the user. Available blockchains are: ethereum, avalanche-c-chain, solana.
assets	No	String[]	List of assets enabled for the associated address. They are appended to the available list of tokens for the user to buy or send.
supportedNetworks	No	String[]	Restrict the networks available for the associated assets.

Subscribing to Widget Events

You can manually process widget events on web & React Native, as follows:

Prerequisites

yarn add react-native-url-polyfill

React-Native Example

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

See Also:

• Installing Coinbase Pay SDK
• Generating a URL
• Coinbase Pay SDK FAQ