Integrate Embedded Wallets with the Linea Blockchain in React Native

While using the Embedded Wallets React Native SDK, you get a EIP1193 provider, similar to the MetaMask Provider. Use it with libraries such as viem or ethers to make Linea blockchain calls like getting the user's account, fetching balance, sign transaction, send transaction, read from and write to the smart contract, etc.

Chain details for Linea

Mainnet

• Chain ID: 0xe708
• RPC URL: You can use our bundled RPC service from Infura, or your own choice of RPC service for production.
• Display Name: Linea Mainnet
• Block Explorer Link: https://lineascan.build
• Ticker: ETH
• Ticker Name: Ethereum

Sepolia Testnet

• Chain ID: 0xe705
• Public RPC URL: https://rpc.sepolia.linea.build
• Display Name: Linea Sepolia Testnet
• Block Explorer Link: https://sepolia.lineascan.build
• Ticker: ETH
• Ticker Name: Ethereum

Installation

Use any EIP-1193 compatible library with the provider from the SDK. These examples use viem:

npm

npm install viem

Yarn

yarn add viem

pnpm

pnpm add viem

Bun

bun add viem

To use Wagmi hooks instead, see Ethereum hooks (Wagmi).

Initialize

Set up the SDK as described in Get started, with the chain configured on the dashboard or in web3AuthOptions.chains. After sign-in, read the EIP-1193 provider from useWeb3Auth().connection and create viem clients:

import { useWeb3Auth } from '@web3auth/react-native-sdk'
import { createPublicClient, createWalletClient, custom } from 'viem'

const { connection } = useWeb3Auth()

// Call after the user signs in (isConnected is true)
const transport = custom(connection!.ethereumProvider!)
const walletClient = createWalletClient({ transport })
const publicClient = createPublicClient({ transport })

Get account

const [address] = await walletClient.getAddresses()

Get balance

import { formatEther } from 'viem'

const [address] = await walletClient.getAddresses()
const balance = formatEther(await publicClient.getBalance({ address }))

Send transaction

import { parseEther } from 'viem'

const [account] = await walletClient.getAddresses()

const hash = await walletClient.sendTransaction({
  account,
  to: '0x40e1c367Eca34250cAF1bc8330E9EddfD403fC56',
  value: parseEther('0.001'),
  chain: null, // use the provider's active chain
})

const receipt = await publicClient.waitForTransactionReceipt({ hash })

Sign a message

const [account] = await walletClient.getAddresses()

const signature = await walletClient.signMessage({
  account,
  message: 'YOUR_MESSAGE',
})