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React Hooks for Ethereum

wagmi is a collection of React Hooks containing everything you need to start working with Ethereum. wagmi makes it easy to "Connect Wallet," display ENS and balance information, sign messages, interact with contracts, and much more — all with caching, request deduplication, and persistence.

npm i wagmi ethers

Overview

import { WagmiConfig, createClient } from 'wagmi'
import { getDefaultProvider } from 'ethers'

const client = createClient({
  autoConnect: true,
  provider: getDefaultProvider(),
})

function App() {
  return (
    <WagmiConfig client={client}>
      <Profile />
    </WagmiConfig>
  )
}
import { useAccount, useConnect, useDisconnect } from 'wagmi'
import { InjectedConnector } from 'wagmi/connectors/injected'

function Profile() {
  const { address, isConnected } = useAccount()
  const { connect } = useConnect({
    connector: new InjectedConnector(),
  })
  const { disconnect } = useDisconnect()

  if (isConnected)
    return (
      <div>
        Connected to {address}
        <button onClick={() => disconnect()}>Disconnect</button>
      </div>
    )
  return <button onClick={() => connect()}>Connect Wallet</button>
}

In this example, we create a wagmi Client and pass it to the WagmiConfig React Context. The client is set up to use the ethers Default Provider and automatically connect to previously connected wallets.

Next, we use the useConnect hook to connect an injected wallet (e.g. MetaMask) to the app. Finally, we show the connected account's address with useAccount and allow them to disconnect with useDisconnect.

We've only scratched the surface for what you can do with wagmi!

Features

wagmi supports all these features out-of-the-box:

  • 20+ hooks for working with wallets, ENS, contracts, transactions, signing, etc.
  • Built-in wallet connectors for MetaMask, WalletConnect, Coinbase Wallet, and Injected
  • Caching, request deduplication, multicall, batching, and persistence
  • Auto-refresh data on wallet, block, and network changes
  • TypeScript ready
  • Test suite running against forked Ethereum network

...and a lot more.

Community

Check out the following places for more wagmi-related content:

Support

Help support future development and make wagmi a sustainable open-source project. Thank you 🙏

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Last updated on August 10, 2022