MEV Sandwich Bot Implementation

Code Structure

main.py: Entry point, orchestrates the bot's components.
sandwich.py: Handles sandwich attack logic.
arbitrage.py: Manages flash loan arbitrage.
utils.py: Utility functions for reserves, profit calculations, etc.
config.py: Configuration settings.

Required Libraries 📚

To run the MEV Sandwich Bot on Ubuntu, you need to install the following Python libraries:

• web3.py: For interacting with the Ethereum blockchain.
• flashbots: For MEV protection and private transaction submission via Flashbots.
• python-dotenv: For loading environment variables from a .env file.

pip install web3.py flashbots python-dotenv

MEV Sandwich Bot in Python

Setup and Deployment Instructions

Deploy FlashLoanArbitrage.sol

• Compile and deploy the contract on Ethereum Mainnet (or a testnet) using Remix, Hardhat, or Truffle.
• Update FLASH_LOAN_CONTRACT in config.py with the deployed address.

Configure .env

• Ensure your .env file has RPC_URL, PRIVATE_KEY, and ACCOUNT set up correctly, as described earlier.

Install Dependencies

• Run pip install web3.py flashbots python-dotenv in your project directory to install the required Python libraries.

Test the Bot

• Run main.py to start the bot, ensuring it connects to Ethereum, loads ABIs, and executes trades without errors.

Key Features 🚀

• ✅ Flash Loan Arbitrage: Borrows capital from dYdX with zero upfront capital, executes arbitrage trades across multiple DEXs (e.g., Uniswap, SushiSwap), repays the loan within the same transaction, and only executes when profitable.
• ✅ Sandwich Attacks (MEV Exploits): Detects pending transactions in the mempool, front-runs a victim’s trade with a buy order, uses the victim’s order to increase the token price, and immediately sells after for profit, protected against failed or unprofitable trades.
• 🛠️ Gas Optimization & MEV Protection: Prioritizes low-gas cost execution, uses gas-efficient smart contract calls, avoids front-running by other bots with Flashbots or private mempools.
• 🛠️ Profitability Checks & Error Handling: Ensures only profitable trades are executed, double-checks prices and slippage, skips unprofitable or failed transactions, and logs errors to prevent execution failures.
• 📡 On-Chain & Off-Chain Components: Uses Web3.py to interact with Ethereum-based DEXs, loads contract ABIs dynamically, and monitors the Ethereum mempool in real-time for opportunities.
• ⚡ Atomic Execution: Ensures all transactions (borrowing, swapping, repaying) happen in one atomic transaction; if any step fails, the entire transaction reverts, preventing losses.
• 🌐 Compatibility & Scalability: Works with Ethereum Mainnet, Arbitrum, BSC, Polygon, and other EVM-compatible chains, integrates with private RPCs or Flashbots for stealth execution, and runs 24/7 without manual intervention.