The Coinbase Onramp JS SDK contains helper methods to simplify integrating with our fiat onramp. Wallet providers and dapps can leverage Coinbase Onramp and let their users top up their self-custody wallets.
See the Coinbase Onramp documentation for instructions on how to onboard to Coinbase Onramp and get started.
With yarn:
yarn add @coinbase/cbpay-jsWith npm:
npm install @coinbase/cbpay-jsThe 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-runtimeWith npm:
npm install regenerator-runtimeimport { initOnRamp } from '@coinbase/cbpay-js';
const options = {
appId: '<Your Project ID obtained from Coinbase Developer Platform>',
widgetParameters: {
// Specify the addresses and which networks they support
addresses: { '0x0': ['ethereum','base'], 'bc1': ['bitcoin']},
// Filter the available assets on the above networks to just these ones
assets: ['ETH','USDC','BTC'],
},
onSuccess: () => {
console.log('success');
},
onExit: () => {
console.log('exit');
},
onEvent: (event) => {
console.log('event', event);
},
experienceLoggedIn: 'popup',
experienceLoggedOut: 'popup',
closeOnExit: true,
closeOnSuccess: true,
};
// Initialize the CB Pay instance
let onrampInstance;
initOnRamp(options, (error, instance) => {
onrampInstance = instance;
});
// Open the widget when the user clicks a button
onrampInstance.open();import { CBPayInstanceType, initOnRamp } from "@coinbase/cbpay-js";
import { useEffect, useState } from "react";
export const PayWithCoinbaseButton: React.FC = () => {
const [onrampInstance, setOnrampInstance] = useState<CBPayInstanceType | null>();
useEffect(() => {
initOnRamp({
appId: '<Your Project ID obtained from Coinbase Developer Platform>',
widgetParameters: {
// Specify the addresses and which networks they support
addresses: { '0x0': ['ethereum','base'], 'bc1': ['bitcoin']},
// Filter the available assets on the above networks to just these ones
assets: ['ETH','USDC','BTC'],
},
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);
});
// When button unmounts destroy the instance
return () => {
onrampInstance?.destroy();
};
}, []);
const handleClick = () => {
onrampInstance?.open();
};
return <button onClick={handleClick} disabled={!onrampInstance}>Buy with Coinbase</button>;
};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 Project ID obtained from Coinbase Developer Platform>',
// Specify the addresses and which networks they support
addresses: { '0x0': ['ethereum','base'], 'bc1': ['bitcoin']},
// Filter the available assets on the above networks to just these ones
assets: ['ETH','USDC','BTC'],
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 CoinbaseWebViewReview the Coinbase Developer docs for how to produce the parameters for use within an on ramp aggregator.
import { CBPayInstanceType, initOnRamp } from "@coinbase/cbpay-js";
import { useEffect, useState } from "react";
export const PayWithCoinbaseButton: React.FC = () => {
const [onrampInstance, setOnrampInstance] = useState<CBPayInstanceType | null>();
useEffect(() => {
initOnRamp({
appId: '<Your Project ID obtained from Coinbase Developer Platform>',
widgetParameters: {
// Specify the addresses and which networks they support
addresses: { '0x0': ['ethereum','base'], 'bc1': ['bitcoin']},
// Filter the available assets on the above networks to just these ones
assets: ['ETH','USDC','BTC'],
// Aggregator params are ignored unless they are all provided.
// defaultNetwork is the exception - it's optional.
quoteId: '<quote_id from the Buy Quote API>',
defaultAsset: 'USDC',
defaultNetwork: 'base',
defaultPaymentMethod: 'CARD',
presetFiatAmount: 20,
fiatCurrency: 'USD',
},
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);
});
// When button unmounts destroy the instance
return () => {
onrampInstance?.destroy();
};
}, []);
const handleClick = () => {
onrampInstance?.open();
};
return <button onClick={handleClick} disabled={!onrampInstance}>Buy with Coinbase</button>;
};Commit signing is required for contributing to this repo. For details, see the docs on contributing and commit-signing.
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