CANA-dao

CANA-dao / polymarket-trade-bot

Public

Polymarket copy trade bot Polymarket copy trade bot Polymarket copy trade bot Polymarket copy trade bot Polymarket copy trade bot Polymarket copy trade bot Polymarket copy trade bot Polymarket copy trade bot Polymarket copy trade bot

arbitrage bot nodejs polymarket prediction-markets
65
343
69% credibility
Found Jun 02, 2026 at 65 stars -- GitGems finds repos before they trend. Get early access to the next one.
Sign Up Free
AI Analysis
TypeScript
AI Summary

A trading bot that watches Polymarket temperature prediction markets, automatically buys positions when weather forecasts suggest better odds than the market offers, and manages those positions until the market resolves. It runs in either practice mode or live trading mode, tracks all trades, and learns from past results to improve future decisions.

How It Works

1
🔍 You hear about a weather betting bot

You discover a tool that watches Polymarket temperature markets and automatically places bets when the odds seem wrong.

2
📊 You connect your weather data sources

The bot pulls in weather forecasts from multiple sources to estimate what temperature each city will actually reach.

3
⚖️ The bot finds a mispriced bet

When the forecasted probability beats the market price, the bot sees an opportunity to profit.

4
💰 You place a bet automatically

The bot buys a YES position on the temperature outcome it predicts, sizing the bet based on how confident it is.

5
📡 The bot watches your position

It tracks the market price and exits automatically if the price drops too far or if the forecast changes significantly.

6
🌡️ The market resolves

When the event ends, the bot checks the official temperature reading and calculates your profit or loss.

🎉 You see your results

The bot records every trade, shows your win rate, and updates your balance so you know exactly how you did.

Sign up to see the full architecture

5 more

Sign Up Free

Star Growth

See how this repo grew from 65 to 65 stars Sign Up Free
Repurpose This Repo

Repurpose is a Pro feature

Generate ready-to-use prompts for X threads, LinkedIn posts, blog posts, YouTube scripts, and more -- with full repo context baked in.

Unlock Repurpose
AI-Generated Review

What is polymarket-trade-bot?

A TypeScript bot that hunts for arbitrage opportunities on Polymarket temperature prediction markets. It pulls live weather forecasts from Open-Meteo and METAR stations, compares them against CLOB prices across 20 cities worldwide, and automatically buys outcome tokens when the expected value clears a threshold. The bot manages positions with fractional Kelly sizing, trailing stop-losses, and take-profit rules, storing all state locally in JSON. Developers can run it in paper mode to test against simulated balances or flip a flag to execute real orders via Polymarket's CLOB on Polygon.

Why is it gaining traction?

This stands out because it actually works in both simulation and live trading without rewriting code. The expected value calculation combined with fractional Kelly gives it a principled approach to position sizing rather than gut-feel betting. The 20-city coverage across US, Europe, Asia, and other regions provides broad market scanning, and the free data sources (Open-Meteo, Aviation Weather) keep costs near zero. The pipeline diagram in the readme makes it immediately clear how weather data flows into trade decisions.

Who should use this?

Crypto-native developers interested in sports/weather prediction markets who want to validate quantitative trading strategies before risking capital. Researchers exploring Polymarket CLOB integrations for custom dashboards. Not suitable for beginners -- you need to understand Kelly criterion, market microstructure, and Polygon wallet management before deploying live.

Verdict

This is a legitimate, working bot for a narrow niche, but the credibility score of 0.699999988079071% and low star count signal early-stage software. The code is clean and the approach is sound, but test coverage and documentation depth lag behind production-ready tools. Worth experimenting with in paper mode, but do your own calibration work before enabling live trading. Start with the `npm run dev` workflow to understand the risk controls before touching real funds.

Sign up to read the full AI review Sign Up Free

Similar repos coming soon.