Types of Polymarket Bots Explained

Not all bots are created equal. Here's a deep dive into each type, who they're for, and what to expect.

1. Copy Trading Bots

Copy trading bots are the most accessible type of Polymarket automation. They work by monitoring the on-chain activity of wallets you've selected and automatically placing matching trades in your account.

How They Work

• You select target wallets to copy (based on their track record)
• The bot monitors their transactions via the Polymarket API or directly on-chain
• When a target wallet places a trade, the bot replicates it with your configured position size
• When the target exits, the bot exits your position too

Pros

• No market analysis required — you're leveraging someone else's research
• Relatively simple to set up compared to other bot types
• Can be profitable even for complete beginners

Cons

• Slippage — you'll always enter slightly after the target trader
• Dependent on the continued performance of your copy targets
• Doesn't help you learn to trade — you're outsourcing the decision

2. Alert / Notification Bots

Alert bots don't trade for you — they inform you of market events so you can make your own decisions. They're the safest type of bot because they never touch your capital.

Alert Types

• Wallet alerts — Notification when a specific wallet makes a trade
• Price alerts — Notification when a market price crosses a threshold
• Volume alerts — Notification when unusual trading volume occurs
• New market alerts — Notification when new markets are created in categories you care about
• Resolution alerts — Notification when markets you're in are about to resolve

3. Market Making Bots

Market making bots place both buy and sell orders, profiting from the spread between them. They require significant capital, sophisticated risk management, and deep understanding of order book dynamics.

On Polymarket, market making is particularly challenging because markets are binary and time-limited. Unlike stock market making where prices can range infinitely, prediction market prices are bounded between $0 and $1, compressing the opportunity space.

Capital requirement: $10,000+ for meaningful market making. Most successful market makers on Polymarket deploy $50k-$500k.

4. Arbitrage Bots

Arbitrage bots exploit pricing inconsistencies. On Polymarket, the most common opportunities are:

• Cross-market arbitrage — When related markets have inconsistent pricing (e.g., "Candidate wins primary" and "Candidate wins general" prices implying contradictory probabilities)
• YES/NO mismatch — When YES and NO prices for the same market don't sum to exactly $1 (after accounting for fees)
• Multi-outcome arbitrage — When a multi-outcome market (e.g., "Who wins the Oscar?") has probabilities summing to more or less than 100%

Pure arbitrage opportunities on Polymarket are rare and typically small (0.5-2% profit) because other bots quickly eliminate them. But they're risk-free when they exist.