Examples

Basic authorization

This will set the EOA code to the Simple7702Account implementation.

example.ts

import { walletClient } from "./client.js";
 
const accountImplementation = "0x4Cd241E8d1510e30b2076397afc7508Ae59C66c9";
 
const authorization = await walletClient.signAuthorization({
	contractAddress: accountImplementation,
	executor: "self",
});
 
const hash = await walletClient.sendTransaction({
	authorizationList: [authorization],
	data: "0x",
	to: walletClient.account.address,
});
console.log(`Delegated at tx ${hash}`);

Transaction batching

Once the EOA code is delegated to a smart account implementation, you can start making batched transactions.

example.ts

import { zeroAddress } from "viem";
 
import accountAbi from "./abi.js";
import { account, walletClient } from "./client.js";
 
const hash = await walletClient.writeContract({
	abi: accountAbi,
	address: account.address,
	functionName: "executeBatch",
	args: [
		[
			{
				target: zeroAddress,
				value: 1n,
				data: "0x",
			},
			{
				target: "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
				value: 0n,
				data: "0xdeadbeef",
			},
		],
	],
});
console.log(`Transaction hash ${hash}`);

Sending a user operation

Signs and sends a UserOp using the ERC-4337 flow. Assumes the account is already initialized, and the EOA is the owner of the account.

This way, you can also sponsor the transactions by using a paymaster.

Note that the process is exactly the same as when using a regular smart account. To minimize the code surface, you can use a convenience library like permissionless.js.

example.ts

import { zeroAddress } from "viem";
 
import { smartAccount } from "./account.js";
import { bundlerClient } from "./client.js";
 
const userOpHash = await bundlerClient.sendUserOperation({
	account: smartAccount,
	calls: [
		{
			to: zeroAddress,
			value: 1n,
		},
		{
			to: "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
			data: "0xdeadbeef",
		},
	],
});
console.log(`User operation sent ${userOpHash}`);