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Using EIP-7702

What is EIP-7702?

EIP-7702 is an upcoming upgrade set to launch as part of the Ethereum Pectra hardfork. Specifically, EIP-7702 enables Externally Owned Accounts (EOAs) to use smart contract account features.

This upgrade marks a pivotal moment in Ethereum’s journey toward account abstraction, a breakthrough designed to make onchain experiences smoother, smarter, and more accessible. EIP-7702 doesn’t replace Ethereum’s existing AA standard, ERC-4337. EIP-7702 was designed to be complementary to ERC-4337 and make it easier for those account abstraction features to reach users.

  • EIP-7702 enables EOAs to delegate control to smart contract accounts that can execute code directly from their addresses
  • It is compatible with the prevailing AA standard, ERC-4437, so existing EOAs can enable smart account features without creating a new address and transferring assets
  • For users, it will enable web2-like features, including account recovery and passkey sign-in for easier authentication, and web3 benefits like gas-sponsored transaction fees and paying for gas in any token, not just ETH

Learn more about EIP-7702.

When to use EIP-7702?

For developers with existing users and embedded wallets

Upgrade your existing embedded EOA users to smart accounts to enable features like batching and gas sponsorship. Account Kit makes this upgrade easy with compatible smart accounts and infrastructure. Follow this guide.

For developers who have not deployed their app

While ERC-4337 and EIP-7702 both enable account abstraction, they serve different needs. You can either:

  • (Recommended) Use ERC-4337 smart accounts from the start to leverage the fullest of Ethereum AA features such as maximum account programability, extensive transaction customization, and established tooling: get started here
  • Use EIP-7702 smart EOAs: keep reading this guide

Explore here to decide what's best for you.

How to ship smart EOAs

In this example, we will upgrade a new embedded EOA to a smart contract account (Modular Account v2) and send a gasless transaction from the account.

The following sets up a Smart Account Client using the EIP-7702 supported version of a Modular Account v2. Make sure to first go through the authentication setup to generate a signer.

import { useSmartAccountClient } from "@account-kit/react";
 
const { client, address, isLoadingClient } = useSmartAccountClient({
  type: "ModularAccountV2",
  accountParams: {
    mode: "7702",
  },
});

2. Send a sponsored transaction

Now that you have a smart account client with an EIP-7702 supported smart account, you can leverage all of the easy-to-use React hooks to take action on the account. Account Kit will handle all of the complexity of delegating your EOA to the smart account and handling the special signature types.

Continue on to sending user operations (aka smart account transactions) and sponsoring gas.

When can I use it?

EIP-7702 will be supported on Sepolia starting March 5, and mainnet is expected to follow shortly after. Account Kit will support EIP-7702 integration on Day 1 at both milestones.

Check out the UI Demo to see a live preview of these features in action!

Want to experiment on other testnets before March 5? Reach out to us at [email protected] for early access to experimental networks.

Upgrading an existing EOA

Want to upgrade your EOA to have smart contract functionality? Learn how to here.