git clone https://github.com/Neron888/Polymarket-copy-trading-bot.git
cd Polymarket-copy-trading-bot
npm install

cp .env.example .env

undefined

---

undefined

---

index.ts
  └── TradeMonitor      — REST polls Polymarket Data API for new target trades
  └── WebSocketMonitor  — Optional low-latency WS subscription (market or user channel)
  └── TradeExecutor     — Sizes trade, checks balance/allowance, submits CLOB order
  └── PositionTracker   — In-memory positions updated on fills
  └── RiskManager       — Session + per-market notional enforcement

detect trade → BUY? → subscribe WS if needed → compute copy size
  → risk check → execute order (FOK/FAK/LIMIT) → record fill → update stats

import { startBot } from './src/index';

// The bot reads all config from process.env / .env
startBot();

import { TradeMonitor } from './src/TradeMonitor';

const monitor = new TradeMonitor({
  targetWallet: process.env.TARGET_WALLET!,
  pollInterval: Number(process.env.POLL_INTERVAL ?? 2000),
});

monitor.on('trade', (trade) => {
  console.log('New trade detected:', trade);
  // trade.side: 'BUY' | 'SELL'
  // trade.asset: token ID (outcome token address)
  // trade.size: USDC size
  // trade.price: fill price (0–1)
});

monitor.start();

import { TradeExecutor } from './src/TradeExecutor';
import { ClobClient } from '@polymarket/clob-client';
import { ethers } from 'ethers';

const provider = new ethers.providers.JsonRpcProvider(process.env.RPC_URL);
const signer = new ethers.Wallet(process.env.WALLET_PRIVATE_KEY!, provider);

const clobClient = new ClobClient(
  'https://clob.polymarket.com',
  137, // Polygon chainId
  signer,
  apiCreds,          // loaded from .polymarket-api-creds
  Number(process.env.SIG_TYPE ?? 0),
  process.env.PROXY_WALLET_ADDRESS || undefined,
);

const executor = new TradeExecutor({
  client: clobClient,
  positionMultiplier: Number(process.env.POSITION_MULTIPLIER ?? 0.1),
  maxTradeSize: Number(process.env.MAX_TRADE_SIZE ?? 100),
  minTradeSize: Number(process.env.MIN_TRADE_SIZE ?? 1),
  orderType: (process.env.ORDER_TYPE ?? 'FOK') as 'FOK' | 'FAK' | 'LIMIT',
  slippageTolerance: Number(process.env.SLIPPAGE_TOLERANCE ?? 0.02),
});

// Copy a detected trade
await executor.copyTrade({
  side: 'BUY',
  tokenId: '0xAssetId...',
  originalSize: 12.5,   // USDC from target's trade
  price: 0.62,
});

import { RiskManager } from './src/RiskManager';

const riskManager = new RiskManager({
  maxSessionNotional: Number(process.env.MAX_SESSION_NOTIONAL ?? 0),
  maxPerMarketNotional: Number(process.env.MAX_PER_MARKET_NOTIONAL ?? 0),
});

const allowed = riskManager.checkTrade({
  marketId: '0xConditionId...',
  notional: copySize,
});

if (!allowed) {
  console.log('Trade blocked by risk limits');
}

import { WebSocketMonitor } from './src/WebSocketMonitor';

const wsMonitor = new WebSocketMonitor({
  useUserChannel: process.env.USE_USER_CHANNEL === 'true',
  assetIds: process.env.WS_ASSET_IDS?.split(',').filter(Boolean) ?? [],
  marketIds: process.env.WS_MARKET_IDS?.split(',').filter(Boolean) ?? [],
});

wsMonitor.on('orderFilled', (fill) => {
  console.log('Fill received via WS:', fill);
});

wsMonitor.connect();

SIG_TYPE=0
WALLET_PRIVATE_KEY=0xYourKey

On first run, the bot auto-submits USDC.e/CTF approval transactions. Wallet needs POL for gas.

SIG_TYPE=1
WALLET_PRIVATE_KEY=0xSignerKey
PROXY_WALLET_ADDRESS=0xYourPolymarketProxyAddress

SIG_TYPE=2
WALLET_PRIVATE_KEY=0xSignerKey
PROXY_WALLET_ADDRESS=0xYourPolymorphicSafeAddress

npm run generate-api-creds

npm run test-api-creds

POSITION_MULTIPLIER=0.05
MAX_TRADE_SIZE=5
MIN_TRADE_SIZE=1
MAX_SESSION_NOTIONAL=20
ORDER_TYPE=FOK
USE_WEBSOCKET=false

USE_WEBSOCKET=true
USE_USER_CHANNEL=false
WS_ASSET_IDS=0xTokenId1,0xTokenId2

ORDER_TYPE=LIMIT
SLIPPAGE_TOLERANCE=0.03