0xBuilder: Your MEV Toolkit for Ethereum

Maximize your Ethereum trading potential with 0xBuilder, a powerful framework designed for high-frequency trading and Maximal Extractable Value (MEV) strategies.

0xBuilder empowers you with tools for:

• Front-running: Capitalize on pending transactions for profit.
• Back-running: Strategically execute trades after specific transactions.
• Sandwich Attacks: Profit from manipulating transaction order in decentralized exchanges.
• Flash Loan Arbitrage: Leverage flash loans for zero-capital arbitrage opportunities.

⚠️ Important: Under Active Development
0xBuilder is currently in active development. Expect potential bugs and use with extreme caution. Your use is at your own risk.

Key Features

0xBuilder provides a comprehensive suite of features for effective MEV exploitation:

• Mempool Monitoring: Real-time analysis of the Ethereum mempool to identify profitable opportunities.
• Advanced Trading Strategies: Implements sophisticated strategies like front-running, back-running, sandwich attacks, and flash loan arbitrage.
• Flash Loan Integration (Aave V3): Utilizes Aave V3 flash loans for capital-efficient trading.
• Data-Driven Decisions: Integrates with cryptocurrency APIs for real-time market data analysis.
• Gas Optimization: Dynamically adjusts gas prices to minimize transaction costs.
• Robust Transaction Management: Includes nonce management and atomic transaction bundling for reliable execution.
• Risk Mitigation: Built-in safety checks and risk assessments to protect operations.
• DeFi Protocol Support: Seamlessly interacts with popular DeFi platforms like Uniswap, Sushiswap, and Aave.
• Highly Configurable: Adaptable to various wallets, tokens, trading pairs, and strategies.
• Detailed Logging: Comprehensive logs for performance analysis, debugging, and strategy refinement.

Project Structure

/0xBuilder/
├── abi/                      # Smart Contract ABIs (JSON format)
├── contracts/                # Solidity Smart Contracts (Flashloan, Interfaces)
├── linear_regression/        # Machine Learning for Price Prediction (Models, Data)
├── python/                  # Core Python Bot Logic
│   ├── safetynet.py          # Risk Management & Safety Checks
│   ├── strategynet.py        # MEV Strategy Implementation
│   ├── mempoolmonitor.py     # Mempool Monitoring Engine
│   ├── marketmonitor.py      # Market Data Analysis
│   ├── main.py               # Main Bot Entry Point
│   ├── transactioncore.py    # Transaction Handling & Execution
│   ├── maincore.py           # Core Application Logic
│   ├── noncecore.py          # Nonce Management
│   ├── apiconfig.py          # API Integration & Data Handling
│   ├── configuration.py      # Configuration Loading
│   ├── abiregistry.py        # Centralized ABI Management
│   ├── 0xBuilder.log        # Default Log File
│   ├── __init__.py
│   └── pyutils/              # Utility Modules
├── utils/                    # JSON Configuration Files (Tokens, Signatures)
├── .env                      # Environment Variable Configuration
└── requirements.txt          # Python Dependencies

Prerequisites

System Requirements

• Operating System: Linux (Ubuntu 20.04+ recommended), Windows 10/11, macOS 12+
• Internet: Stable connection (50Mbps+ recommended)
• Hardware:
  • CPU: 4+ cores, 3.0GHz+ (e.g., Intel i7 or equivalent)
  • RAM: 16GB minimum
  • Storage: 1.5TB NVMe SSD (for local Ethereum node synchronization)

Software Requirements

• Python: Version 3.12 or higher
• Ethereum Execution Client: One of:
  • Geth (Recommended)
  • Nethermind
  • Besu
  • Erigon
  • Reth (Testnets only)
  • EthereumJS

Ethereum Node Setup

Run your own Ethereum Execution and Consensus (Beacon) client. Geth and Prysm are highly recommended.

Example: Setting up Geth

1. Install Geth: Follow Geth installation guide.
2. Start Geth Node:

   ./geth --mainnet --syncmode snap --http --http.api eth,net,admin,web3,txpool --ws --ws.api eth,net,admin,web3,txpool --maxpeers 100 --cache 16000 --ipcpath ~/0xBuilder/geth.ipc --allow-insecure-unlock --http.corsdomain "*"

3. Verify Sync:

   geth attach ipc:/path/to/geth.ipc
   > eth.syncing

   Wait until synchronization is complete.

Beacon Node Setup

Use Prysm or Lighthouse.

./prysm.sh beacon-chain --mainnet --checkpoint-sync-url=https://beaconcha.in/api/v1/genesis --genesis-beacon-api-url=https://beaconcha.in --http-web3provider=/path/to/geth.ipc

Installation

1. Clone the Repository:

   git clone https://github.com/John0n1/0xBuilder.git
   cd 0xBuilder

2. Create a Virtual Environment (Recommended):

   # Linux/macOS
   python3 -m venv venv
   source venv/bin/activate
   
   # Windows
   python -m venv venv
   .\venv\Scripts\activate

3. Install Dependencies:

   python -m pip install --upgrade pip
   pip install -r requirements.txt

Configuration

0xBuilder uses environment variables and JSON configuration files for customization.

Environment Variables (.env file)

1. Copy Example .env:

   cp .env.example .env

2. Edit .env: Configure values such as API keys, Ethereum node endpoints, wallet details, and file paths.

JSON Configuration Files (utils/ directory)

Customize the following files:

• token_addresses.json: Map token symbols to contract addresses.
• token_symbols.json: Map token symbols to API identifiers.
• erc20_signatures.json: Define ERC20 function signatures.

Deploy Your Flash Loan Contract

Deploy the SimpleFlashloan.sol contract using Remix:

1. Open Remix IDE.

2. Create a new file SimpleFlashloan.sol and paste the following code:

   // SPDX-License-Identifier: MIT
   pragma solidity ^0.8.20;
   
   import "https://github.com/aave/aave-v3-core/blob/master/contracts/flashloan/base/FlashLoanSimpleReceiverBase.sol";
   import "https://github.com/aave/aave-v3-core/blob/master/contracts/interfaces/IPoolAddressesProvider.sol";
   import "https://github.com/aave/aave-v3-core/blob/master/contracts/dependencies/openzeppelin/contracts/IERC20.sol";
   
   contract SimpleFlashLoan is FlashLoanSimpleReceiverBase {
       address payable public owner;
   
       event FlashLoanRequested(address token, uint256 amount);
       event FlashLoanExecuted(address token, uint256 amount, uint256 premium, bool success);
   
       constructor(address _addressProvider) FlashLoanSimpleReceiverBase(IPoolAddressesProvider(_addressProvider)) {
           owner = payable(msg.sender);
       }
   
       modifier onlyOwner() {
           require(msg.sender == owner, "Not contract owner");
           _;
       }
   
       function fn_RequestFlashLoan(address _token, uint256 _amount) public onlyOwner {
           emit FlashLoanRequested(_token, _amount);
           POOL.flashLoanSimple(address(this), _token, _amount, "", 0);
       }
   
       function executeOperation(
           address asset,
           uint256 amount,
           uint256 premium,
           address initiator,
           bytes calldata params
       ) external override returns (bool) {
           require(IERC20(asset).approve(address(POOL), amount + premium), "Approval failed");
           emit FlashLoanExecuted(asset, amount, premium, true);
           return true;
       }
   
       function withdrawToken(address _tokenAddress) public onlyOwner {
           IERC20 token = IERC20(_tokenAddress);
           uint256 balance = token.balanceOf(address(this));
           require(balance > 0, "No tokens to withdraw");
           token.transfer(owner, balance);
       }
   
       function withdrawETH() public onlyOwner {
           uint256 balance = address(this).balance;
           require(balance > 0, "No ETH to withdraw");
           owner.transfer(balance);
       }
   
       receive() external payable {}
   }

3. Compile and deploy using Remix.

4. Update your .env file with the deployed contract address:

   AAVE_FLASHLOAN_ADDRESS=0xYourDeployedContractAddress

Register for API Keys

Obtain API keys from:

• Infura
• Etherscan
• CoinGecko
• CoinMarketCap
• CryptoCompare

Add your keys to the .env file.

Run the Bot

Ensure:

• Your Ethereum node is fully synchronized.
• The .env file and JSON configuration files are correctly set.
• Your wallet is funded with enough ETH to cover gas costs.

Steps:

1. Activate your virtual environment:

   # Linux/macOS
   source venv/bin/activate
   
   # Windows
   .\venv\Scripts\activate

2. Start 0xBuilder:

   python python/main.py

Strategies Implemented

0xBuilder includes a range of MEV strategies:

Front-Running Strategies:

• Aggressive Front-Running
• Predictive Front-Running
• Volatility Front-Running
• Advanced Front-Running

Back-Running Strategies:

• Price Dip Back-Running
• Flashloan Back-Running
• High Volume Back-Running
• Advanced Back-Running

Sandwich Attack Strategies:

• Flash Profit Sandwich Attack
• Price Boost Sandwich Attack
• Arbitrage Sandwich Attack
• Advanced Sandwich Attack

Other Strategies:

• High-Value ETH Transfer Monitoring

Logging and Monitoring

Detailed logs are written to python/0xBuilder.log and also output to the console. These logs provide insights into:

• Mempool activity
• Strategy execution and performance
• Profit tracking
• Error and exception details

Troubleshooting

Common Issues:

Issue	Solution
Node Connection Errors	Verify your Ethereum node is running and that the endpoints in .env are correct.
API Rate Limit Exceeded	Throttle requests or upgrade your API plan for higher limits.
Insufficient ETH Balance	Ensure your wallet has enough ETH to cover gas costs.
Nonce Synchronization Problems	Restart the bot or reset the nonce manually if necessary.
Ethereum Node Not Synced	Wait until your Ethereum client is fully synchronized before running the bot.
Flash Loan Contract Issues	Verify your flash loan contract is deployed correctly and the address is correct in .env.

Debugging Tips:

1. Enable verbose logging by setting the log level to DEBUG in python/maincore.py.
2. Ensure all dependencies are installed (pip install -r requirements.txt).
3. Test on a testnet (e.g., Sepolia) before deploying to mainnet.
4. Review logs in python/0xBuilder.log for detailed error messages.

Contributing

Contributions are highly welcome! To contribute:

1. Fork the repository.
2. Create a new branch for your feature or bug fix.
3. Write your code following PEP 8 guidelines and add tests.
4. Submit a pull request with detailed descriptions of your changes.

See CONTRIBUTING.md for more information.

License

This project is licensed under the MIT License. See the LICENSE file for details.

Disclaimer:
Trading and MEV strategies involve significant risk. Use 0xBuilder at your own risk. The developers are not responsible for any losses incurred using this software.