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Setup

This page explains how to integrate Crypto.com Onchain SDK as the default provider for your dapp using web3.js. You can follow a similar pattern if you are using ethers.js.

Setting up Crypto.com Onchain SDK​

info

Instructions are in TypeScript. The usage is the same in JavaScript, except for the occasional TypeScript type annotation such as string[] or as any.

Prerequisites​

  • A Typescript project set up locally, created with yarn create react-app my-app --template typescript or similar
  • web3.js installed using npm install web3 or similar

Initializing​

In your project, add the following code to initialize Crypto.com Onchain SDK and a Web3 object:

App.tsx
import { DeFiWeb3Connector } from "@deficonnect/web3-connector";

const connector = new DeFiWeb3Connector({
  supportedChainIds: [1],
  chainType: "eth", // only support 'eth' for DeFiWeb3Connector
  chainId: "25",
  rpcUrls: {
    1: "https://mainnet.infura.io/v3/INFURA_API_KEY",
    25: "https://evm-cronos.crypto.org/",
  },
});