🎯 EVM Mempool Sniper Bot

A high-performance liquidity sniping bot for Uniswap V5 and Unichain L2, featuring async mempool monitoring, Flashbots integration, and honeypot detection.

📸 Demo

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⚡ Features

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🏗️ Architecture

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🚀 Quick Start

Prerequisites

• Python 3.10+
• Alchemy or Infura WebSocket RPC
• (Optional) Flashbots reputation key

Installation

# Clone the repository
git clone https://github.com/yourusername/evm-mempool-sniper.git
cd evm-mempool-sniper

# Create virtual environment
python -m venv .venv
.venv\Scripts\activate  # Windows
# source .venv/bin/activate  # Linux/Mac

# Install dependencies
pip install -r requirements.txt

# Configure environment
cp .env.example .env
# Edit .env with your RPC URLs and private key

Run Demo

python sniper.py

Expected Output:

=================================================================
  UNISWAP SNIPER BOT v1.0.0
  Mempool Monitor | Flashbots Protect | Multi-Chain
=================================================================

[2024-05-22 14:30:15] INFO: Starting Ethereum mempool monitor...
[2024-05-22 14:30:17] INFO: Connected to Sepolia Testnet via Infura.
[2024-05-22 14:31:02] EVENT: PairCreated detected on Uniswap V2!
[2024-05-22 14:31:02] EVENT: PairCreated detected on Uniswap V2! Token: 0x....8f2a (TEST/ETH)
[2024-05-22 14:31:02] ACTION: Initiating buy transaction...  Gas: 150 gwei
[2024-05-22 14:31:03] SUCCESS: Buy transaction confirmed in block 5678901.
[2024-05-22 14:31:05] INFO: Calculating arbitrage opportunity...
[2024-05-22 14:31:06] ACTION: Executing sell on Sushiswap...
[2024-05-22 14:31:08] SUCCESS: Sell transaction confirmed. Simulated Profit: +0.045 ETH
[2024-05-22 14:31:10] INFO: Continuing mempool scan...

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🔧 Configuration

Edit .env with your settings:

# RPC Endpoints (WebSocket required)
ETH_WSS=wss://eth-mainnet.g.alchemy.com/v2/YOUR_KEY

# Wallet (use dedicated wallet!)
PRIVATE_KEY=your_private_key

# Flashbots
FLASHBOTS_RELAY=https://relay.flashbots.net

Trading parameters in sniper.py:

SNIPE_AMOUNT_ETH = 0.5      # ETH per snipe
SLIPPAGE_PERCENT = 5.0      # Max slippage
PRIORITY_FEE_GWEI = 2.5     # Miner tip
MAX_BUY_TAX = 10.0          # Max acceptable tax

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🔐 Security Features

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🛠️ Technical Stack

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📚 Key Concepts

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⚠️ Disclaimer

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📄 License

MIT License - see LICENSE for details.

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