# EIP-7702 Delegation

EIP-7702 enhances Externally Owned Accounts (EOAs) by allowing them to perform smart contract-like operations. In this example, we show how to sign the `eip7702Auth` tuple in SimpleAccount to delegate the authorization to the smart account.

For the complete example on how to upgrade an EOA to a smart account, visit [EIP-7702 Getting Started](https://docs.candide.dev/wallet/guides/getting-started-eip-7702.md).

## Setup[​](#setup "Direct link to Setup")

Install dependencies

```
npm i abstractionkit ethers
```

## Initialize Smart Account[​](#initialize-smart-account "Direct link to Initialize Smart Account")

[Simple7702Account](https://docs.candide.dev/wallet/abstractionkit/simple-7702-account.md) is a fully audited minimalist smart contract account that can be safely authorized by any EOA. It adds full support for major smart account features like batching and gas sponsorship.

index.ts

```
import { Simple7702Account } from "abstractionkit";
import { Wallet } from "ethers";

const eoaDelegator = Wallet.createRandom();

const smartAccount = new Simple7702Account(eoaDelegator.address);

console.log("Account address (sender): " + smartAccount.accountAddress);
```

## Create UserOperation[​](#create-useroperation "Direct link to Create UserOperation")

Calling `createUserOperation` on `Simple7702Account` will:

1. Compute the r and s values for the `eip7702Auth`. These values are part of the signature authorization tuple needed to upgrade the EOA. This is only used once, during the upgrade transaction of the EOA.
2. Determine the nonce and fetch the gas prices from the provided node RPC.
3. Estimate gas limits from the provided bundler.
4. Returns an unsigned UserOperation.

index.ts

```
const bundlerUrl = process.env.BUNDLER_URL as string;
const chainId = BigInt(process.env.CHAIN_ID as string);
const eoaDelegatorPrivateKey = eoaDelegator.privateKey;

let userOperation = await smartAccount.createUserOperation(
    [metaTransaction],
    jsonRpcNodeProvider,
    bundlerUrl,
    {
        eip7702Auth:{
            chainId, // chainId at which the account will be upgraded, which is needed in EIP-7702
        }
    }
);
```

## Sign the Delegate Authorization[​](#sign-the-delegate-authorization "Direct link to Sign the Delegate Authorization")

Sign the `eip7702Auth` tuple to delegate the authorization to the smart account. This is only called once, during the upgrade transaction of the EOA.

```
import { createAndSignEip7702DelegationAuthorization } from "abstractionkit";

userOperation.eip7702Auth = createAndSignEip7702DelegationAuthorization(
    BigInt(userOperation.eip7702Auth.chainId),
    userOperation.eip7702Auth.address,
    BigInt(userOperation.eip7702Auth.nonce),
    eoaDelegatorPrivateKey
);
```

In this guide, we've shown you how to upgrade an Externally Owned Account (EOA) by delegating its authorization to a designated smart contract address using EIP-7702. To run a complete example, visit [EIP-7702 Getting Started](https://docs.candide.dev/wallet/guides/getting-started-eip-7702.md).