Complete DeFi Exchange Script | Uniswap V4 Hook-Based DEX Clone | Ready to Deploy

What You Get

A complete, production-ready decentralized exchange (DEX) built on top of Uniswap V4 — the latest version of the world's leading swap protocol. This is a full-stack DeFi application with custom smart contracts, a modern swap interface, and a built-in commission system that lets you earn fees on every trade.

Unlike basic Uniswap forks, this DEX uses Uniswap V4's powerful hook system to automatically extract a commission on every swap — giving you a real revenue stream from day one.

Download the ZIP, deploy, and start earning.

Key Features

Built-In Revenue System

Automatic commission extraction on every swap (default 1%, configurable up to 10%)
Set custom commission rates per trading pool
Withdraw accumulated fees directly to your wallet
Full admin dashboard to manage rates and monitor earnings

Professional Swap Interface

Sleek dark-themed UI with animated effects
Real-time price quotes before every trade
Single-hop and multi-hop (multi-pool) swap routing
Slippage tolerance and transaction deadline protection
Gas estimation on every quote
Mobile responsive design

Liquidity Management

Create new trading pools for any ERC-20 token pair
Add liquidity — full range or custom price range (concentrated liquidity)
Remove liquidity positions
Pool state monitoring and position tracking

Wallet Support

MetaMask, WalletConnect, Coinbase Wallet, Ledger, and 300+ wallets
Powered by Reown AppKit (formerly WalletConnect)
One-click connect with network switching

Admin / Owner Controls

Set global or per-pool commission rates
Pause and unpause all swaps (emergency stop)
Withdraw accumulated protocol fees
Secure two-step ownership transfer

Security

Two-step ownership transfer (prevents accidental loss of control)
Emergency pause functionality
Slippage protection on all swaps
Transaction deadline validation
Fully tested — 88 unit tests + mainnet fork tests

How It Works

You deploy the smart contracts to Ethereum mainnet, Base, Arbitrum, or any EVM chain where Uniswap V4 is live
You create trading pools for token pairs you want to support (ETH/USDC, ETH/USDT, etc.)
Users swap tokens through your branded frontend
Your hook automatically extracts a commission on every single trade
You withdraw your earnings whenever you want

The commission is taken at the smart contract level — transparent, trustless, and automatic. No backend server needed.

What's Included

Full Source Code (ZIP Download)
├── Smart Contracts (Solidity)
│   ├── CommissionHook        — Swap hook with commission extraction
│   ├── CommissionRouter      — Single & multi-hop swap routing
│   ├── CommissionQuoter      — Real-time price quote engine
│   └── CommissionPoolManager — Pool creation & liquidity management
│
├── Frontend (Next.js)
│   ├── Swap interface with live quotes
│   ├── Liquidity / Pools dashboard
│   ├── Wallet connection (300+ wallets)
│   ├── Admin controls panel
│   └── Built-in documentation page
│
├── Deployment Scripts
│   ├── Local development (Anvil/Foundry)
│   ├── Testnet (Sepolia) with mock tokens
│   └── Mainnet (deterministic CREATE2 deployment)
│
├── Test Suite — 88 unit tests + fork tests
├── Full HTML Documentation — single-page, offline-ready
└── Environment configuration templates

Tech Stack

Layer	Technology
Smart Contracts	Solidity 0.8.26
Protocol	Uniswap V4 (Hooks)
Contract Framework	Foundry (Forge, Cast, Anvil)
Frontend	Next.js 16, React 19, TypeScript
Styling	Tailwind CSS
Web3 Integration	wagmi v3, viem v2
Wallet Connection	Reown AppKit (WalletConnect)
Testing	Foundry (Solidity), Vitest (Frontend)
EVM Target	Cancun (latest)

Supported Chains

Works on any EVM chain where Uniswap V4 is deployed:

Ethereum Mainnet
Base
Arbitrum
Optimism
Polygon
Sepolia (testnet — included with mock tokens)

Requirements

Node.js 18+ (for frontend)
Foundry (for smart contract compilation and deployment)
A funded wallet with ETH for deployment gas
Reown Project ID (free at cloud.reown.com — for wallet connection)
Basic knowledge of smart contract deployment

No server required. No database. No backend. Pure Web3.

Easy Customization

Change commission rate — single variable in the deployment script
Add new tokens — add token address to the frontend config file
Add new chains — add chain config and contract addresses
Rebrand — change name, colors, and logo in the frontend
Extend the hook — add custom logic (referral fees, volume discounts, etc.)

Quick Start

Download and extract the ZIP
Install Foundry and Node.js
Configure your .env with private key and RPC URL
Deploy contracts with one Foundry command
Update frontend config with your contract addresses
Deploy frontend to Vercel, Netlify, or any static host
Start earning commissions on every swap

Full step-by-step documentation is included in the download.

Demo

Live testnet demo deployed on Sepolia with test tokens (ETH, USDT, USDC, DAI).

https://uniswap-v4-dex.vercel.app/

Uniswap V4 DEX / Token Swap Platform — Full Source Code with Smart Contracts

Description