What is polymarket-trading-bot?

polymarket-trader-lab/polymarket-trading-bot — explained in plain English

Analysis updated 2026-05-18

★ 213JavaScriptAudience · developerComplexity · 4/5Setup · hard

Mindmap

mindmap
  root((repo))
    What it does
      Trades BTC 5min up down markets
      Buys both sides for arbitrage
      Merges and redeems positions
    Tech stack
      Node.js
      Polygon blockchain
      Live price monitoring
    Use cases
      Automated market arbitrage
      Copy trading a wallet
      Study trading automation
    Audience
      Experienced crypto traders
      Node.js developers
    Safety
      Spending caps per market
      Circuit breakers

mindmap root((repo)) What it does Trades BTC 5min up down markets Buys both sides for arbitrage Merges and redeems positions Tech stack Node.js Polygon blockchain Live price monitoring Use cases Automated market arbitrage Copy trading a wallet Study trading automation Audience Experienced crypto traders Node.js developers Safety Spending caps per market Circuit breakers

What do people build with it?

USE CASE 1

Run automated arbitrage on Polymarket's five minute Bitcoin Up/Down markets.

USE CASE 2

Mirror a target wallet's trades using the copy trading mode.

USE CASE 3

Automatically merge matched positions and redeem winnings after resolution.

USE CASE 4

Study a working example of a real time crypto arbitrage system.

What is it built with?

Node.jsJavaScriptPolygon

How does it compare?

	polymarket-trader-lab/polymarket-trading-bot	rust-lang/lang-team	arbitragebot-group/polymarket-trading-bot
Stars	213	213	219
Language	JavaScript	JavaScript	JavaScript
Last pushed	—	2026-07-03	—
Maintenance	—	Active	—
Setup difficulty	hard	easy	hard
Complexity	4/5	1/5	4/5
Audience	developer	developer	developer

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · hard Time to first run · 1h+

Requires a funded crypto wallet with USDC on Polygon and comfort with live blockchain transactions.

So what is it?

This is an automated trading bot for Polymarket, a prediction market platform where users bet on real-world outcomes using cryptocurrency. The bot targets short-duration Bitcoin price direction markets on Polymarket, specifically the recurring 5-minute windows where you bet whether Bitcoin's price will go up or down. The core strategy is arbitrage: the bot posts buy orders on both the "up" and "down" sides of each market simultaneously. Since both outcomes together must resolve to exactly one dollar, if the bot can buy both sides for less than a dollar combined, it can lock in a near-guaranteed profit after the market resolves. It handles the full cycle automatically: discovering upcoming markets, placing orders, monitoring live prices, merging matched positions back into USDC, and redeeming winning positions after resolution. The bot also includes a copy-trading mode that watches a target wallet's activity on Polymarket and mirrors their trades with your own funds up to configurable spending limits. This tool is for people experienced with cryptocurrency trading who want to automate Polymarket arbitrage. It places real blockchain transactions using a connected wallet funded with USDC on the Polygon network. Risk controls like per-market spending caps and circuit breakers are built in. It is built with JavaScript on Node.js.

Copy-paste prompts

Prompt 1

Explain how this bot's arbitrage strategy locks in profit by buying both sides of a market.

Prompt 2

Walk me through the wallet and USDC setup needed before this bot can trade on Polygon.

Prompt 3

How does the copy trading mode decide which trades from the target wallet to mirror?

Prompt 4

What do the spending cap and circuit breaker settings actually protect against?

Prompt 5

Suggest conservative starting limits for a first cautious test run of this bot.

Frequently asked questions