Swap Router Contract — DeFi Router

Contract Details

Categorycontracts

Files15

Price$14.99

Tech Stack

Solidity ^0.8.24 OpenZeppelin v5 Foundry

Chains

Ethereum Arbitrum Base Optimism

Description

Multi-DEX swap router with fee-recipient monetization. Routes trades across Uniswap V2/V3, SushiSwap, and other DEXes via a pluggable adapter pattern. Configurable protocol fee (0.05%-1%) with 24-hour timelock on changes. Supports multi-hop routing, deadline enforcement, and Permit2 approvals.

Features

✓ Multi-DEX routing via pluggable adapter pattern
✓ Configurable fee-recipient monetization (max 1%)
✓ 24-hour timelock on fee rate changes
✓ Multi-hop swap execution
✓ Permit2 integration for gasless approvals
✓ Uniswap V2 + V3 adapters included
✓ Emergency pause + sweep functions
✓ Full Foundry test suite (40+ tests, fuzz tests)

swap-router-contract.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

/// @title Swap Router Contract
/// @notice Multi-DEX swap router with fee-recipient monetization (0x pattern).
contract SwapRouterContract {
    address public immutable owner;
    uint256 public constant VERSION = 1;

    event Initialized(address indexed deployer);

    constructor() {
        owner = msg.sender;
        emit Initialized(msg.sender);
    }

    // ... full implementation in purchased package
}