Building 3 Different Polymarket Trading Bots (5m Markets, Copy Trading, Arbitrage Ladder Bot)

[Benjamin-Cup]

Hi everyone,
I've been working on several automated trading bots for Polymarket, mainly focused on short-duration crypto prediction markets (5m–1d).
Instead of trying to predict markets manually, I experimented with three different automated strategies:
Endcycle Sniper Bot
Copy Trading Bot
Arbitrage / Ladder Market Making Bot
I thought I'd share how they work and see if anyone here is experimenting with similar systems.

Opensource : https://github.com/Gabagool2-2/polymarket-trading-bot-python

---

Polymarket Endcycle Sniper Bot​

This bot focuses on 5-minute crypto markets like:

• BTC
• ETH
• SOL
• XRP

The idea is to monitor the orderbook in real time and detect momentum signals near the end of the epoch.

Pipeline​

Market discovery → Orderbook streaming → Price history → Spot vs strike comparison → Signal engine → Execution
The signal engine uses:
• rolling midpoint price tracking
• comparison of first half vs second half averages
• reference price from exchange feeds (Coinbase/Binance)
Example trigger:

If YES price > 0.95
enter trade with optional risk exit

Strategies implemented:
Buy-Above (momentum)
Enter when price exceeds threshold.
Buy-Opposite (mean reversion)
If one side spikes above ~0.98, buy the opposite side.
The bot can run multiple markets simultaneously.

---

Polymarket Copy Trading Bot​

This bot automatically copies trades from top Polymarket wallets.
Architecture:

Trader Activity
      ↓
Trade Monitor
      ↓
MongoDB
      ↓
Trade Executor
      ↓
Follower Wallets

Main features:
• copy trades by % or fixed USD amount
• multi-wallet support
• preview mode (dry-run)
• built-in PnL monitoring
Example config:

COPY_STRATEGY=percentage
COPY_PERCENTAGE=20
MAX_ORDER_SIZE_USD=50

The idea is to replicate strategies from high-performing traders automatically.

---

Arbitrage (Ladder Trading) Bot​

This one is more interesting because it does not predict market direction.
Instead, it captures spread by selling both outcomes.
Example:

Token	Sell Price
YES	0.54
NO	0.49

Total received:

0.54 + 0.49 = 1.03

Cost to create pair:

1.00

Profit per pair:

0.03

Typical range:

pair_sum = 1.03 – 1.10

After market resolution:
• winning token redeems to $1
• losing token becomes $0
The bot redeems automatically.

---

Bot Cycle​

IDLE
 ↓
SPLIT collateral
 ↓
PAIR SELL
 ↓
MONITOR
 ↓
REDEEM
 ↓
IDLE

---

Supported markets​

Works on Polymarket crypto markets:
• BTC
• ETH
• SOL
• XRP
Intervals:

• 5m
• 15m
• 1h
• 4h
• 1d

---

Example Configuration​

liquidity_maker:
  portfolio_allocation_usdc: 100
  pair_size: 5
  min_pair_sum: 1.03
  price_follow_spread: 0.01

---

Tech Stack​

Main components:
Python
TypeScript
WebSocket orderbook streaming
Gamma API
Polymarket CLOB API
Builder Relayer

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If anyone is interested in seeing the bots running or discussing strategies, feel free to reach out.
Email: [email protected]
Telegram : https://t.me/BenjaminCup
X: https://x.com/benjaminccup