Introduction

Crypto prediction markets move fast.

One interesting pattern I noticed while trading on Polymarket is that short-term crypto markets often follow Bitcoin's direction, especially near market expiration. When Bitcoin shows strong directional momentum, assets such as Ethereum (ETH), Solana (SOL), and XRP frequently move in the same direction.

This observation led me to build a simple momentum-based Polymarket trading bot.

The core idea is straightforward: