polymm

What it is

A Python bot that market-makes Polymarket sports and esports markets. It strips sportsbook odds to a fair probability, posts limit quotes where that value differs from the book, and after a fill tries to buy the other outcome; a missed hedge stays a directional bet. Odds fetching, vig removal, scanning, orders, hedges, and fill and book websockets run as one async process, with odds, fills, and positions stored in Supabase. Developers with a Polymarket wallet and a paid odds API can use this retired Python base as a start: private scrapers and the Rust rewrite are absent, and the author says this version became too slow to hold its edge.