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smartWallet

Creates a ERC4337 smart wallet based on a admin account.

Smart wallets are smart contract wallets that enable multiple benefits for users:

  • Sponsor gas fees for transactions

  • Multiple owners

  • Session keys

  • Batch transactions

  • Predictable addresses

  • Programmable features

Learn more about account abstraction

Example

Connect to a smart wallet

To connect to a smart wallet, you need to provide an admin account as the personalAccount option.

Any wallet can be used as an admin account, including an in-app wallets.

The sponsorGas option is used to enable sponsored gas for transactions automatically.

import { smartWallet, inAppWallet } from "thirdweb/wallets";
import { sepolia } from "thirdweb/chains";
import { sendTransaction } from "thirdweb";
 
const wallet = smartWallet({
  chain: sepolia,
  sponsorGas: true, // enable sponsored transactions
});
 
// any wallet can be used as an admin account
// in this example we use an in-app wallet
const adminWallet = inAppWallet();
const personalAccount = await adminWallet.connect({
  client,
  chain: sepolia,
  strategy: "google",
});
 
const smartAccount = await wallet.connect({
  client,
  personalAccount, // pass the admin account
});
 
// sending sponsored transactions with the smartAccount
await sendTransaction({
  account: smartAccount,
  transaction,
});

Configuring the smart wallet

You can pass options to the smartWallet function to configure the smart wallet.

import { smartWallet } from "thirdweb/wallets";
import { sepolia } from "thirdweb/chains";
 
const wallet = smartWallet({
 chain: sepolia,
 sponsorGas: true, // enable sponsored transactions
 factoryAddress: "0x...", // custom factory address
 overrides: {
   accountAddress: "0x...", // override account address
   accountSalt: "0x...", // override account salt
   entrypointAddress: "0x...", // override entrypoint address
   erc20Paymaster: { ... }, // enable erc20 paymaster
   bundlerUrl: "https://...", // override bundler url
   paymaster: (userOp) => { ... }, // override paymaster
   ...
 }
});

Refer to SmartWalletOptions for more details.

function smartWallet(
  createOptions: SmartWalletOptions,
): Wallet<"smart">;

Parameters

The options for creating the wallet. Refer to SmartWalletCreationOptions for more details.

Type

let createOptions: Prettify<
  {
    chain: Chain;
    factoryAddress?: string;
    overrides?: {
      accountAddress?: string;
      accountSalt?: string;
      bundlerUrl?: string;
      createAccount?: (
        factoryContract: ThirdwebContract,
      entrypointAddress?: string;
      erc20Paymaster?: { address: string; token: string };
      execute?: (
        accountContract: ThirdwebContract,
        transaction: SendTransactionOption,
      executeBatch?: (
        accountContract: ThirdwebContract,
        transactions: Array<SendTransactionOption>,
      getAccountNonce?: (
        accountContract: ThirdwebContract,
      ) => Promise<bigint>;
      paymaster?: (userOp: UserOperation) => Promise<PaymasterResult>;
      predictAddress?: (
        factoryContract: ThirdwebContract,
      ) => Promise<string>;
    };
  } & ({ gasless: boolean } | { sponsorGas: boolean })
>;

Returns

let returnType: Wallet<"smart">;

The created smart wallet.