Learn how to seamlessly integrate the Avalanche Network into your decentralized application using Web3 SSH and popular tools like Core and MetaMask.

Introduction

In the rapidly evolving landscape of decentralized applications (dApps), integrating robust and scalable blockchain networks is crucial. Avalanche network integration offers developers a high-performance platform with low latency and customizable subnet capabilities. This guide will walk you through the process of programmatically adding the Avalanche Network to your dApp using Web3 SSH, leveraging tools like Core and MetaMask to ensure a seamless and secure integration.

Prerequisites

Before diving into the integration process, ensure you have the following tools and knowledge:

Basic understanding of Web3 and blockchain technologies
Node.js and npm installed on your development machine
Core browser extension or MetaMask wallet
Access to the avalanche-dapp-sdks repository
Familiarity with Git and command-line interfaces

Step 1: Install Core or MetaMask

Using Core

Core is an all-in-one operating system for Avalanche, bringing together apps, L1s, bridges, and NFTs within a high-performance browser. To get started:

Download and Install Core: Download Core Browser Extension
Set Up Your Wallet: Create or import your Avalanche wallet within Core.
Explore Core Features: Familiarize yourself with the integrated tools and apps.

Using MetaMask

MetaMask is a widely-used Ethereum wallet that also supports Avalanche network integration. To set up:

Install MetaMask: Get MetaMask Extension
Create or Import Wallet: Set up your wallet with a secure password.
Add Avalanche Network: Follow the steps in the next section to programmatically add the network.

Step 2: Clone the avalanche-dapp-sdks Repository

Access the necessary SDKs to facilitate Avalanche network integration:

git clone https://github.com/ava-labs/avalanche-dapp-sdks.git
cd avalanche-dapp-sdks
yarn bootstrap

Note: You can also use SSH to clone the repository:

git clone [email protected]:ava-labs/avalanche-dapp-sdks.git

Step 3: Set Up Your Environment

Navigate to the sample project and start the development server:

cd packages/avalanche-connector-example
npm start

Once running, visit http://localhost:3000/ to view the sample dApp. Here, you can interact with the “Connect Avalanche” button to initiate the network connection.

Step 4: Adding the Avalanche Network Programmatically

To streamline the user experience, automate the process of adding the Avalanche network to MetaMask using the wallet_addEthereumChain method defined in EIP-3035.

Prepare Network Parameters

Define the mainnet and testnet configurations:

export const AVALANCHE_MAINNET_PARAMS = {
  chainId: "0xA86A",
  chainName: "Avalanche Mainnet C-Chain",
  nativeCurrency: {
    name: "Avalanche",
    symbol: "AVAX",
    decimals: 18,
  },
  rpcUrls: ["https://api.avax.network/ext/bc/C/rpc"],
  blockExplorerUrls: ["https://snowtrace.io/"],
};

export const AVALANCHE_TESTNET_PARAMS = {
  chainId: "0xA869",
  chainName: "Avalanche Testnet C-Chain",
  nativeCurrency: {
    name: "Avalanche",
    symbol: "AVAX",
    decimals: 18,
  },
  rpcUrls: ["https://api.avax-test.network/ext/bc/C/rpc"],
  blockExplorerUrls: ["https://testnet.snowtrace.io/"],
};

Implement the Network Addition Function

Create a function to request MetaMask to add the Avalanche network:

function addAvalancheNetwork() {
  injected
    .getProvider()
    .then((provider) => {
      provider
        .request({
          method: "wallet_addEthereumChain",
          params: [AVALANCHE_MAINNET_PARAMS],
        })
        .catch((error) => {
          console.log(error);
        });
    });
}

Integrate with Your Front-End

Attach the addAvalancheNetwork function to a button in your dApp. This ensures that users can effortlessly add the Avalanche network with a single click, enhancing their onboarding experience.

<button onClick="addAvalancheNetwork()">Connect Avalanche</button>

User Experience Enhancements

Ensuring a smooth user experience is paramount. Here are some tips:

Automatic Detection: Detect if the user is on the wrong network and prompt them to switch automatically.
Clear Messaging: Inform users why they need to add the Avalanche network and the benefits it brings.
Error Handling: Gracefully handle errors during the network addition process to guide users effectively.

Conclusion

Avalanche network integration provides your dApp with enhanced performance, scalability, and security. By programmatically adding Avalanche using Web3 SSH and tools like Core and MetaMask, you simplify the onboarding process for users, reducing potential friction and increasing adoption. Leveraging these integrations ensures your application remains competitive and user-friendly in the decentralized ecosystem.

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