React

AppKit has support for Wagmi and Ethers v6 on Ethereum and @solana/web3.js on Solana. Choose one of these ethereum libraries or solana to get started.

Installation

Wagmi

npm

npm install @web3modal/wagmi wagmi viem @tanstack/react-query

Yarn

yarn add @web3modal/wagmi wagmi viem @tanstack/react-query

Bun

bun add @web3modal/wagmi wagmi viem @tanstack/react-query

pnpm

pnpm add @web3modal/wagmi wagmi viem @tanstack/react-query

Ethers

npm

npm install @web3modal/ethers5 ethers@5.7.2

Yarn

yarn add @web3modal/ethers5 ethers@5.7.2

Bun

bun add @web3modal/ethers5 ethers@5.7.2

pnpm

pnpm add @web3modal/ethers5 ethers@5.7.2

Ethers v5

npm

npm install @web3modal/ethers ethers

Yarn

yarn add @web3modal/ethers ethers

Bun

bun add @web3modal/ethers ethers

pnpm

pnpm add @web3modal/ethers ethers

Solana

npm

npm install @web3modal/solana

Yarn

yarn add @web3modal/solana

Bun

bun add @web3modal/solana

pnpm

pnpm add @web3modal/solana

Cloud Configuration

Create a new project on WalletConnect Cloud at https://cloud.walletconnect.com and obtain a new project ID.

Don't have a project ID?

Head over to WalletConnect Cloud and create a new project now!

Get started

Implementation

Wagmi

For a quick integration you can use defaultWagmiConfig function which wraps Wagmi's createConfig function with a predefined configuration. This includes WalletConnect, Coinbase and Injected connectors, and the Blockchain API as a transport

On top of your app set up the following configuration, making sure that all functions are called outside any React component to avoid unwanted rerenders.

import { createWeb3Modal } from '@web3modal/wagmi/react'
import { defaultWagmiConfig } from '@web3modal/wagmi/react/config'

import { WagmiProvider } from 'wagmi'
import { arbitrum, mainnet } from 'wagmi/chains'
import { QueryClient, QueryClientProvider } from '@tanstack/react-query'

// 0. Setup queryClient
const queryClient = new QueryClient()

// 1. Get projectId from https://cloud.walletconnect.com
const projectId = 'YOUR_PROJECT_ID'

// 2. Create wagmiConfig
const metadata = {
  name: 'AppKit',
  description: 'AppKit Example',
  url: 'https://web3modal.com', // origin must match your domain & subdomain
  icons: ['https://avatars.githubusercontent.com/u/37784886']
}

const chains = [mainnet, arbitrum] as const
const config = defaultWagmiConfig({
  chains,
  projectId,
  metadata,
})

// 3. Create modal
createWeb3Modal({
  metadata,
  wagmiConfig: config,
  projectId,
  enableAnalytics: true // Optional - defaults to your Cloud configuration
})

export function AppKitProvider({ children }) {
  return (
    <WagmiProvider config={config}>
      <QueryClientProvider client={queryClient}>{children}</QueryClientProvider>
    </WagmiProvider>
  )
}

Ethers

On top of your app set up the following configuration, making sure that all functions are called outside any React component to avoid unwanted rerenders.

import { createWeb3Modal, defaultConfig } from '@web3modal/ethers5/react'

// 1. Get projectId
const projectId = 'YOUR_PROJECT_ID'

// 2. Set chains
const mainnet = {
  chainId: 1,
  name: 'Ethereum',
  currency: 'ETH',
  explorerUrl: 'https://etherscan.io',
  rpcUrl: 'https://cloudflare-eth.com'
}

// 3. Create a metadata object
const metadata = {
  name: 'My Website',
  description: 'My Website description',
  url: 'https://mywebsite.com', // origin must match your domain & subdomain
  icons: ['https://avatars.mywebsite.com/']
}

// 4. Create Ethers config
const ethersConfig = defaultConfig({
  /*Required*/
  metadata,

  /*Optional*/
  enableEIP6963: true, // true by default
  enableInjected: true, // true by default
  enableCoinbase: true, // true by default
  rpcUrl: '...', // used for the Coinbase SDK
  defaultChainId: 1 // used for the Coinbase SDK
})

// 5. Create a AppKit instance
createWeb3Modal({
  ethersConfig,
  chains: [mainnet],
  projectId,
  enableAnalytics: true // Optional - defaults to your Cloud configuration
})

export default function App() {
  return <YourApp />
}

IMPORTANT

Make sure that the url from the metadata matches your domain and subdomain. This will later be used by the Verify API to tell wallets if your application has been verified or not.

Ethers v5

On top of your app set up the following configuration, making sure that all functions are called outside any React component to avoid unwanted rerenders.

import { createWeb3Modal, defaultConfig } from '@web3modal/ethers/react'

// 1. Get projectId
const projectId = 'YOUR_PROJECT_ID'

// 2. Set chains
const mainnet = {
  chainId: 1,
  name: 'Ethereum',
  currency: 'ETH',
  explorerUrl: 'https://etherscan.io',
  rpcUrl: 'https://cloudflare-eth.com'
}

// 3. Create a metadata object
const metadata = {
  name: 'My Website',
  description: 'My Website description',
  url: 'https://mywebsite.com', // origin must match your domain & subdomain
  icons: ['https://avatars.mywebsite.com/']
}

// 4. Create Ethers config
const ethersConfig = defaultConfig({
  /*Required*/
  metadata,

  /*Optional*/
  enableEIP6963: true, // true by default
  enableInjected: true, // true by default
  enableCoinbase: true, // true by default
  rpcUrl: '...', // used for the Coinbase SDK
  defaultChainId: 1 // used for the Coinbase SDK
})

// 5. Create a AppKit instance
createWeb3Modal({
  ethersConfig,
  chains: [mainnet],
  projectId,
  enableAnalytics: true // Optional - defaults to your Cloud configuration
})

export default function App() {
  return <YourApp />
}

IMPORTANT

Make sure that the url from the metadata matches your domain and subdomain. This will later be used by the Verify API to tell wallets if your application has been verified or not.

Solana

AppKit Solana provides a set of React components and hooks to easily connect Solana wallets with your application.

On top of your app set up the following configuration, making sure that all functions are called outside any React component to avoid unwanted rerenders.

// App.tsx

import { createWeb3Modal, defaultSolanaConfig } from '@web3modal/solana/react'
import { solana, solanaTestnet, solanaDevnet } from '@web3modal/solana/chains'

// 0. Setup chains
const chains = [solana, solanaTestnet, solanaDevnet]

// 1. Get projectId from https://cloud.walletconnect.com
const projectId = 'YOUR_PROJECT_ID'

// 2. Create solanaConfig
const metadata = {
  name: 'AppKit',
  description: 'AppKit Solana Example',
  url: 'https://web3modal.com', // origin must match your domain & subdomain
  icons: ['https://avatars.githubusercontent.com/u/37784886']
}

const solanaConfig = defaultSolanaConfig({
  metadata,
  chains,
  projectId
})

// 3. Create modal
createWeb3Modal({
  solanaConfig,
  chains,
  projectId,
  wallets: [
      // Solana wallet adapters (check Custom connectors for more info)
  ]
})

export default function App() {
  return <YourApp />
}

Trigger the modal

Wagmi

To open AppKit you can use our web component or build your own button with AppKit hooks. In this example we are going to use the <w3m-button> component.

Web components are global html elements that don't require importing.

export default function ConnectButton() {
  return <w3m-button />
}

Learn more about the AppKit web components here

Ethers

To open AppKit you can use our web component or build your own button with AppKit hooks.

Web Component

export default function ConnectButton() {
  return <w3m-button />
}

Learn more about the AppKit web components here

note

Web components are global html elements that don't require importing.

Hooks

You can trigger the modal by calling the open function from useWeb3Modal hook.

import { useWeb3Modal } from '@web3modal/ethers5/react'

export default function ConnectButton() {
  // 4. Use modal hook
  const { open } = useWeb3Modal()

  return (
    <>
      <button onClick={() => open()}>Open Connect Modal</button>
      <button onClick={() => open({ view: 'Networks' })}>Open Network Modal</button>
    </>
  )
}

Learn more about the AppKit hooks here

Ethers v5

To open AppKit you can use our web component or build your own button with AppKit hooks.

Web Component

export default function ConnectButton() {
  return <w3m-button />
}

Learn more about the AppKit web components here

note

Web components are global html elements that don't require importing.

Hooks

You can trigger the modal by calling the open function from useWeb3Modal hook.

import { useWeb3Modal } from '@web3modal/ethers/react'

export default function ConnectButton() {
  // 4. Use modal hook
  const { open } = useWeb3Modal()

  return (
    <>
      <button onClick={() => open()}>Open Connect Modal</button>
      <button onClick={() => open({ view: 'Networks' })}>Open Network Modal</button>
    </>
  )
}

Learn more about the AppKit hooks here

Solana

To open AppKit you can use our default web components or build your own logic using AppKit hooks. In this example we are going to use the <w3m-button> component.

Web components are global html elements that don't require importing.

export default function ConnectButton() {
  return <w3m-button />
}

Smart Contract Interaction

Wagmi

Wagmi hooks can help us interact with wallets and smart contracts:

import { useReadContract } from 'wagmi'
import { USDTAbi } from '../abi/USDTAbi'

const USDTAddress = '0x...'

function App() {
  const result = useReadContract({
    abi: USDTAbi,
    address: USDTAddress,
    functionName: 'totalSupply'
  })
}

Read more about Wagmi hooks for smart contract interaction here.

Ethers

Ethers can help us interact with wallets and smart contracts:

import { useWeb3ModalProvider, useWeb3ModalAccount } from '@web3modal/ethers/react'
import { BrowserProvider, Contract, formatUnits } from 'ethers'

const USDTAddress = '0x617f3112bf5397D0467D315cC709EF968D9ba546'

// The ERC-20 Contract ABI, which is a common contract interface
// for tokens (this is the Human-Readable ABI format)
const USDTAbi = [
  'function name() view returns (string)',
  'function symbol() view returns (string)',
  'function balanceOf(address) view returns (uint)',
  'function transfer(address to, uint amount)',
  'event Transfer(address indexed from, address indexed to, uint amount)'
]

function Components() {
  const { address, chainId, isConnected } = useWeb3ModalAccount()
  const { walletProvider } = useWeb3ModalProvider()

  async function getBalance() {
    if (!isConnected) throw Error('User disconnected')

    const ethersProvider = new BrowserProvider(walletProvider)
    const signer = await ethersProvider.getSigner()
    // The Contract object
    const USDTContract = new Contract(USDTAddress, USDTAbi, signer)
    const USDTBalance = await USDTContract.balanceOf(address)

    console.log(formatUnits(USDTBalance, 18))
  }

  return <button onClick={getBalance}>Get User Balance</button>
}

Solana

@Solana/web3.js library allows for seamless interaction with wallets and smart contracts on the Solana blockchain.

For a practical example of how it works, you can refer to this demo app.

import {
  SystemProgram,
  PublicKey,
  Keypair,
  Transaction,
  TransactionInstruction,
  LAMPORTS_PER_SOL
} from '@solana/web3.js'
import { useWeb3ModalAccount, useWeb3ModalProvider } from '@web3modal/solana/react'

function deserializeCounterAccount(data?: Buffer): { count: number } {
  if (data?.byteLength !== 8) {
    throw Error('Need exactly 8 bytes to deserialize counter')
  }

  return {
    count: Number(data[0])
  }
}

const { address, currentChain } = useWeb3ModalAccount()
const { walletProvider, connection } = useWeb3ModalProvider()

async function onIncrementCounter() {
  const PROGRAM_ID = new PublicKey('Cb5aXEgXptKqHHWLifvXu5BeAuVLjojQ5ypq6CfQj1hy')

  const counterKeypair = Keypair.generate()
  const counter = counterKeypair.publicKey

  const balance = await connection.getBalance(walletProvider.publicKey)
  if (balance < LAMPORTS_PER_SOL / 100) {
    throw Error('Not enough SOL in wallet')
  }

  const COUNTER_ACCOUNT_SIZE = 8
  const allocIx: TransactionInstruction = SystemProgram.createAccount({
    fromPubkey: walletProvider.publicKey,
    newAccountPubkey: counter,
    lamports: await connection.getMinimumBalanceForRentExemption(COUNTER_ACCOUNT_SIZE),
    space: COUNTER_ACCOUNT_SIZE,
    programId: PROGRAM_ID
  })

  const incrementIx: TransactionInstruction = new TransactionInstruction({
    programId: PROGRAM_ID,
    keys: [
      {
        pubkey: counter,
        isSigner: false,
        isWritable: true
      }
    ],
    data: Buffer.from([0x0])
  })

  const tx = new Transaction().add(allocIx).add(incrementIx)

  tx.feePayer = walletProvider.publicKey
  tx.recentBlockhash = (await connection.getLatestBlockhash('confirmed')).blockhash

  await walletProvider.signAndSendTransaction(tx, [counterKeypair])

  const counterAccountInfo = await connection.getAccountInfo(counter, {
    commitment: 'confirmed'
  })

  if (!counterAccountInfo) {
    throw new Error('Expected counter account to have been created')
  }

  const counterAccount = deserializeCounterAccount(counterAccountInfo?.data)

  if (counterAccount.count !== 1) {
    throw new Error('Expected count to have been 1')
  }

  console.log(`[alloc+increment] count is: ${counterAccount.count}`);
}

Video Tutorial