Cross-Chain EIP-7702 Sweeps Tooling for Dapp Wallet Integrations

EIP-7702 Solidity Beast: Cross-Chain Sweeps for 4337 Wallets

Ignite your dapp wallet integrations with this powerhouse Solidity contract! It fuses EIP-7702 delegation with ERC-4337 account abstraction to deliver unstoppable cross-chain sweeps. Pulled straight from Alchemy’s elite developer guide—deploy it and conquer chains.

```solidity
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.26;

import {IAccount} from "@account-abstraction/core/IAccount.sol";
import {UserOperation} from "@account-abstraction/core/UserOperation.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

contract EIP7702SweepWallet is IAccount {
    address public immutable owner;
    address public immutable entryPoint;

    event Swept(address indexed token, address indexed to, uint256 amount);

    constructor(address _owner, address _entryPoint) {
        owner = _owner;
        entryPoint = _entryPoint;
    }

    function validateUserOp(
        UserOperation calldata userOp,
        bytes32 userOpHash,
        uint256 missingAccountFunds
    ) external virtual override returns (uint256 validationData) {
        return owner == msg.sender ? 0 : 1;
    }

    /// @notice Sweeps all tokens of a given ERC20 to a target address (e.g., bridge for cross-chain)
    function sweep(address token, address destination) external {
        require(msg.sender == owner || msg.sender == entryPoint, "Unauthorized");
        uint256 balance = IERC20(token).balanceOf(address(this));
        require(balance > 0, "No balance");
        IERC20(token).transfer(destination, balance);
        emit Swept(token, destination, balance);
    }

    // Supports EIP-7702 delegation for temporary smart account behavior on EOAs
    // Deploy and set as delegation target in 7702 tx for 4337-compatible sweeps
}
```

Boom! This beast handles UserOps validation and blasts tokens across chains via sweeps to bridges. Plug it into your EVM wallet, craft 7702 txs delegating to this code, and watch cross-chain magic unfold. Level up now—your users demand it!