import { createWalletClient, custom } from 'viem'
import { optimism } from 'viem/chains'
const client = createWalletClient({
transport: custom(window.ethereum),
})
await client.addChain({ chain: optimism })
Deploys a contract to the network, given bytecode and constructor arguments.
The Transaction hash. DeployContractReturnType
import { createWalletClient, http } from 'viem'
import { privateKeyToAccount } from 'viem/accounts'
import { mainnet } from 'viem/chains'
const client = createWalletClient({
account: privateKeyToAccount('0x…'),
chain: mainnet,
transport: http(),
})
const hash = await client.deployContract({
abi: [],
account: '0x…,
bytecode: '0x608060405260405161083e38038061083e833981016040819052610...',
})
Returns a list of account addresses owned by the wallet or client.
eth_accountsList of account addresses owned by the wallet or client. GetAddressesReturnType
import { createWalletClient, custom } from 'viem'
import { mainnet } from 'viem/chains'
const client = createWalletClient({
chain: mainnet,
transport: custom(window.ethereum),
})
const accounts = await client.getAddresses()
Returns the chain ID associated with the current network.
eth_chainIdThe current chain ID. GetChainIdReturnType
import { createWalletClient, http } from 'viem'
import { mainnet } from 'viem/chains'
const client = createWalletClient({
chain: mainnet,
transport: custom(window.ethereum),
})
const chainId = await client.getChainId()
// 1
Gets the wallets current permissions.
wallet_getPermissionsThe wallet permissions. GetPermissionsReturnType
import { createWalletClient, custom } from 'viem'
import { mainnet } from 'viem/chains'
const client = createWalletClient({
chain: mainnet,
transport: custom(window.ethereum),
})
const permissions = await client.getPermissions()
Prepares a transaction request for signing.
The transaction request. PrepareTransactionRequestReturnType
import { createWalletClient, custom } from 'viem'
import { mainnet } from 'viem/chains'
const client = createWalletClient({
chain: mainnet,
transport: custom(window.ethereum),
})
const request = await client.prepareTransactionRequest({
account: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
to: '0x0000000000000000000000000000000000000000',
value: 1n,
})
// Account Hoisting
import { createWalletClient, http } from 'viem'
import { privateKeyToAccount } from 'viem/accounts'
import { mainnet } from 'viem/chains'
const client = createWalletClient({
account: privateKeyToAccount('0x…'),
chain: mainnet,
transport: custom(window.ethereum),
})
const request = await client.prepareTransactionRequest({
to: '0x0000000000000000000000000000000000000000',
value: 1n,
})
Requests a list of accounts managed by a wallet.
eth_requestAccountsSends a request to the wallet, asking for permission to access the user's accounts. After the user accepts the request, it will return a list of accounts (addresses).
This API can be useful for dapps that need to access the user's accounts in order to execute transactions or interact with smart contracts.
List of accounts managed by a wallet RequestAddressesReturnType
import { createWalletClient, custom } from 'viem'
import { mainnet } from 'viem/chains'
const client = createWalletClient({
chain: mainnet,
transport: custom(window.ethereum),
})
const accounts = await client.requestAddresses()
Requests permissions for a wallet.
wallet_requestPermissionsThe wallet permissions. RequestPermissionsReturnType
import { createWalletClient, custom } from 'viem'
import { mainnet } from 'viem/chains'
const client = createWalletClient({
chain: mainnet,
transport: custom(window.ethereum),
})
const permissions = await client.requestPermissions({
eth_accounts: {}
})
Sends a signed transaction to the network
eth_sendRawTransactionThe transaction hash. SendRawTransactionReturnType
import { createWalletClient, custom } from 'viem'
import { mainnet } from 'viem/chains'
import { sendRawTransaction } from 'viem/wallet'
const client = createWalletClient({
chain: mainnet,
transport: custom(window.ethereum),
})
const hash = await client.sendRawTransaction({
serializedTransaction: '0x02f850018203118080825208808080c080a04012522854168b27e5dc3d5839bab5e6b39e1a0ffd343901ce1622e3d64b48f1a04e00902ae0502c4728cbf12156290df99c3ed7de85b1dbfe20b5c36931733a33'
})
Creates, signs, and sends a new transaction to the network.
eth_sendTransactioneth_sendRawTransactionThe Transaction hash. SendTransactionReturnType
import { createWalletClient, custom } from 'viem'
import { mainnet } from 'viem/chains'
const client = createWalletClient({
chain: mainnet,
transport: custom(window.ethereum),
})
const hash = await client.sendTransaction({
account: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8',
value: 1000000000000000000n,
})
// Account Hoisting
import { createWalletClient, http } from 'viem'
import { privateKeyToAccount } from 'viem/accounts'
import { mainnet } from 'viem/chains'
const client = createWalletClient({
account: privateKeyToAccount('0x…'),
chain: mainnet,
transport: http(),
})
const hash = await client.sendTransaction({
to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8',
value: 1000000000000000000n,
})
Calculates an Ethereum-specific signature in EIP-191 format: keccak256("\x19Ethereum Signed Message:\n" + len(message) + message)).
personal_signWith the calculated signature, you can:
verifyMessage to verify the signature,recoverMessageAddress to recover the signing address from a signature.The signed message. SignMessageReturnType
import { createWalletClient, custom } from 'viem'
import { mainnet } from 'viem/chains'
const client = createWalletClient({
chain: mainnet,
transport: custom(window.ethereum),
})
const signature = await client.signMessage({
account: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
message: 'hello world',
})
// Account Hoisting
import { createWalletClient, http } from 'viem'
import { privateKeyToAccount } from 'viem/accounts'
import { mainnet } from 'viem/chains'
const client = createWalletClient({
account: privateKeyToAccount('0x…'),
chain: mainnet,
transport: http(),
})
const signature = await client.signMessage({
message: 'hello world',
})
Signs a transaction.
eth_signTransactionThe signed message. SignTransactionReturnType
import { createWalletClient, custom } from 'viem'
import { mainnet } from 'viem/chains'
const client = createWalletClient({
chain: mainnet,
transport: custom(window.ethereum),
})
const request = await client.prepareTransactionRequest({
account: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
to: '0x0000000000000000000000000000000000000000',
value: 1n,
})
const signature = await client.signTransaction(request)
// Account Hoisting
import { createWalletClient, http } from 'viem'
import { privateKeyToAccount } from 'viem/accounts'
import { mainnet } from 'viem/chains'
const client = createWalletClient({
account: privateKeyToAccount('0x…'),
chain: mainnet,
transport: custom(window.ethereum),
})
const request = await client.prepareTransactionRequest({
to: '0x0000000000000000000000000000000000000000',
value: 1n,
})
const signature = await client.signTransaction(request)
Signs typed data and calculates an Ethereum-specific signature in EIP-191 format: keccak256("\x19Ethereum Signed Message:\n" + len(message) + message)).
eth_signTypedData_v4The signed data. SignTypedDataReturnType
import { createWalletClient, custom } from 'viem'
import { mainnet } from 'viem/chains'
const client = createWalletClient({
chain: mainnet,
transport: custom(window.ethereum),
})
const signature = await client.signTypedData({
account: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
domain: {
name: 'Ether Mail',
version: '1',
chainId: 1,
verifyingContract: '0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC',
},
types: {
Person: [
{ name: 'name', type: 'string' },
{ name: 'wallet', type: 'address' },
],
Mail: [
{ name: 'from', type: 'Person' },
{ name: 'to', type: 'Person' },
{ name: 'contents', type: 'string' },
],
},
primaryType: 'Mail',
message: {
from: {
name: 'Cow',
wallet: '0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826',
},
to: {
name: 'Bob',
wallet: '0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB',
},
contents: 'Hello, Bob!',
},
})
// Account Hoisting
import { createWalletClient, http } from 'viem'
import { privateKeyToAccount } from 'viem/accounts'
import { mainnet } from 'viem/chains'
const client = createWalletClient({
account: privateKeyToAccount('0x…'),
chain: mainnet,
transport: http(),
})
const signature = await client.signTypedData({
domain: {
name: 'Ether Mail',
version: '1',
chainId: 1,
verifyingContract: '0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC',
},
types: {
Person: [
{ name: 'name', type: 'string' },
{ name: 'wallet', type: 'address' },
],
Mail: [
{ name: 'from', type: 'Person' },
{ name: 'to', type: 'Person' },
{ name: 'contents', type: 'string' },
],
},
primaryType: 'Mail',
message: {
from: {
name: 'Cow',
wallet: '0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826',
},
to: {
name: 'Bob',
wallet: '0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB',
},
contents: 'Hello, Bob!',
},
})
Switch the target chain in a wallet.
eth_switchEthereumChainimport { createWalletClient, custom } from 'viem'
import { mainnet, optimism } from 'viem/chains'
const client = createWalletClient({
chain: mainnet,
transport: custom(window.ethereum),
})
await client.switchChain({ id: optimism.id })
Adds an EVM chain to the wallet.
eth_switchEthereumChainBoolean indicating if the token was successfully added. WatchAssetReturnType
import { createWalletClient, custom } from 'viem'
import { mainnet } from 'viem/chains'
const client = createWalletClient({
chain: mainnet,
transport: custom(window.ethereum),
})
const success = await client.watchAsset({
type: 'ERC20',
options: {
address: '0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2',
decimals: 18,
symbol: 'WETH',
},
})
Executes a write function on a contract.
A "write" function on a Solidity contract modifies the state of the blockchain. These types of functions require gas to be executed, and hence a Transaction is needed to be broadcast in order to change the state.
Internally, uses a Wallet Client to call the sendTransaction action with ABI-encoded data.
Warning: The write internally sends a transaction – it does not validate if the contract write will succeed (the contract may throw an error). It is highly recommended to simulate the contract write with contract.simulate before you execute it.
A Transaction Hash. WriteContractReturnType
import { createWalletClient, custom, parseAbi } from 'viem'
import { mainnet } from 'viem/chains'
const client = createWalletClient({
chain: mainnet,
transport: custom(window.ethereum),
})
const hash = await client.writeContract({
address: '0xFBA3912Ca04dd458c843e2EE08967fC04f3579c2',
abi: parseAbi(['function mint(uint32 tokenId) nonpayable']),
functionName: 'mint',
args: [69420],
})
// With Validation
import { createWalletClient, custom, parseAbi } from 'viem'
import { mainnet } from 'viem/chains'
const client = createWalletClient({
chain: mainnet,
transport: custom(window.ethereum),
})
const { request } = await client.simulateContract({
address: '0xFBA3912Ca04dd458c843e2EE08967fC04f3579c2',
abi: parseAbi(['function mint(uint32 tokenId) nonpayable']),
functionName: 'mint',
args: [69420],
}
const hash = await client.writeContract(request)
Generated using TypeDoc
Adds an EVM chain to the wallet.
eth_addEthereumChain