Polymarket–Kalshi synthetic arbitrage bot (pmxt)

What it does

Educational bot that watches one event on Polymarket and Kalshi and buys YES on one and NO on the other when the combined price is under $1. Built on pmxt; dry-run by default. See the source for setup, usage and current status.

Tools: JavaScriptpmxt

Difficulty: intermediate

Platforms: Kalshi · Polymarket

FAQ

What is Polymarket–Kalshi synthetic arbitrage bot (pmxt)?

Educational bot that watches one event on Polymarket and Kalshi and buys YES on one and NO on the other when the combined price is under $1. Built on pmxt; dry-run by default. It is listed under Arbitrage in this directory.

Does Polymarket–Kalshi synthetic arbitrage bot (pmxt) work with Kalshi or Polymarket?

According to its source, it works with Kalshi and Polymarket.

What tools or languages does Polymarket–Kalshi synthetic arbitrage bot (pmxt) use?

The source lists: JavaScript, pmxt.

Who built Polymarket–Kalshi synthetic arbitrage bot (pmxt) and where is the source?

It was published by realfishsam. The public source is at github.com/realfishsam/prediction-market-arbitrage-bot.

How hard is Polymarket–Kalshi synthetic arbitrage bot (pmxt) to set up?

This directory rates it intermediate (beginner, intermediate or advanced).

How many GitHub stars does Polymarket–Kalshi synthetic arbitrage bot (pmxt) have?

It had 187 GitHub stars as of Oct 14, 2026.

Is Polymarket–Kalshi synthetic arbitrage bot (pmxt) still maintained?

The repository was last updated on Jan 16, 2026, as checked on Oct 23, 2026. Check the source for current status.