trade-execution-labs/polymarket-sport-trading-bot

This repository contains a TypeScript bot that automatically copies the trading activity of another user on Polymarket, which is a prediction market platform where people bet on the outcomes of real-world events. The idea is that you pick a wallet address of a trader whose judgment you trust, and the bot watches their activity and places matching trades in your account at a reduced scale. By default, if the leader spends $200, your bot spends $1, a ratio controlled by a configurable setting. The bot polls Polymarket's data API every 300 milliseconds by default to check for new activity from the chosen wallet. When it detects a trade, it mirrors the action: if the leader buys a position, the bot buys the same position at the scaled size, if they sell, merge, split, or redeem positions, the bot mirrors those operations too. Trades that would scale below a $1 minimum are skipped by default to stay within platform limits. Setup involves installing the project's dependencies, copying a template configuration file, and filling in your own Polymarket wallet address and private key, along with the wallet address of the leader you want to follow. A dry-run mode is enabled by default, which means the bot logs what it would do without actually placing any orders, so you can verify the behavior before running it live. You can also follow multiple leader wallets at once by listing several addresses in the configuration. The README includes a warning that copy-trading carries real financial risk due to timing delays, price slippage, and the possibility that the leader makes losing trades. The project is licensed for private use only and uses official Polymarket SDKs.