Quickstart

Multichain Wallet Connector 🔗

A universal JavaScript library for seamless interaction with 50+ EVM-compatible wallets and chains. Simplifies dApp development with unified APIs for:

• Wallet connections

• Transaction signing

• Contract interactions

• Cross-chain operations

🌟 Features

• Multi-Wallet Support: MetaMask, Coinbase Wallet, Rabby, Trust Wallet, etc.

• 50+ Chains: Ethereum, Polygon, BSC, Arbitrum, Optimism + Testnets

• Full Signing Capabilities:

  • Raw transactions

  • Messages (EIP-191)

  • Typed data (EIP-712)

• Contract Toolkit: Read/write functions with automatic gas estimation

• Lightweight: <15kb minified

📦NPM Installation

The Multichain Wallet Connector is available as an npm package, providing seamless integration with any JavaScript or TypeScript project. To install, run either of the following commands in your project directory:

npm install multichain-wallet-connector
# or
yarn add multichain-wallet-connector

This will:

• Add the library to your node_modules

• Automatically include all required dependencies (e.g., ethers.js, js-sha3)

• Enable both ES Module (import) and CommonJS (require) usage

📦 CDN Usage

For quick integration without package managers, load the library directly in your HTML using our CDN link. include this in your HTML file.

<!-- Load the minified UMD bundle -->
<script src="https://cdn.jsdelivr.net/gh/Nworah-Gabriel/multichain-wallet-connector@v1.0.3/dist/connector.umd.min.js"></script>

<!-- Now available as global `WalletConnector` -->
<script>
  // This is how you can call the functions inside the tool
  WalletConnector.detectProviders();
  WalletConnector.connectWallet();
</script>

When to Use CDN

• Quick prototypes

• Static websites

• Projects without build systems

Import

import { connectWallet } from 'multichain-wallet-connector';

// Connect to Optimism (chainId 10)
const { provider, account } = await connectWallet({
chainId: 10
});
console.log("Connected account:", account);