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Extension Wallet Ethereum Integration ​

Develop EVM based dApps

Introduction ​

Example dApp ​

Integrate Ethereum dApps with Ctrl (fka XDEFI) ​

window.xfi.ethereum ​

Ctrl (fka XDEFI) injects window.xfi.ethereum as an EIP-1193 compatible provider;

As a dApp developer, you can check if window.xfi && window.xfi.ethereum is defined.

If it is, XDEFI is injected.

You can use it with regular ethereum libraries such as web3 or ethersjs.

Using web3.js

javascript
// In Node.js use: const Web3 = require('web3');

let web3 = window.xfi && window.xfi.ethereum && new Web3(window.xfi.ethereum);

if (!web3) {
  // Ctrl (fka XDEFI) is not injected
}

Using ethers.js

javascript
const provider =
  window.xfi &&
  window.xfi.ethereum &&
  new ethers.providers.Web3Provider(window.xfi.ethereum);

if (!provider) {
  // Ctrl (fka XDEFI) is not injected
}

window.ethereum ​

If Pretend to be MetaMask option is enabled in the dApps Settings Providers page, this would make XDEFI overrides window.ethereum and pretend to be MetaMask by having window.ethereum.isMetaMask and window.ethereum._metamask set to true

Using web3.js

javascript
// In Node.js use: const Web3 = require('web3');

let web3 = new Web3(window.ethereum);

**Using ethers.js**

const provider = new ethers.providers.Web3Provider(window.ethereum)

Using onboard.js ​

Follow the getting started tutorial: https://docs.blocknative.com/onboard

And add the entry of xdefi to the wallets option.

javascript
{
  walletName: "xdefi";
}

Example of integration with onboard.js: https://github.com/blocknative/react-demo/blob/master/src/services.js#L71 (live demo https://reactdemo.blocknative.com/)