Polymarket
跟單機器人 建構指南

# TypeScript（推薦）
npm install @polymarket/clob-client ethers@5

# Python
pip install py-clob-client

import { ClobClient } from "@polymarket/clob-client";
import { ethers } from "ethers";

const wallet = new ethers.Wallet(process.env.PRIVATE_KEY!);
const client = new ClobClient(
  "https://clob.polymarket.com",
  137,  // Polygon Mainnet chainId
  wallet,
  undefined,
  0,       // signatureType: 0=EOA, 1=Proxy, 2=Safe, 3=Deposit
  funderAddress
);

// 衍生或建立 L2 API 憑證
let creds = await client.deriveApiKey().catch(() => null);
if (!creds) creds = await client.createApiKey();

import requests, time

TARGET = "0xTARGET_WALLET"
last_seen = int(time.time()) - 60

while True:
    resp = requests.get(
        "https://data-api.polymarket.com/activity",
        params={"user": TARGET, "type": "TRADE",
                "limit": 50, "start": last_seen}
    )
    trades = resp.json()
    for t in trades:
        handle_new_trade(t)
    last_seen = int(time.time())
    time.sleep(2)  # 每 2 秒輪詢一次

async function executeCopyTrade(trade: Trade) {
  // 1. 計算比例金額（POSITION_MULTIPLIER = 0.1 代表跟 10%）
  const copySize = trade.size * POSITION_MULTIPLIER;
  if (copySize < MIN_TRADE_SIZE || copySize > MAX_TRADE_SIZE) return;

  // 2. 風控檢查
  const check = riskManager.checkTrade(trade, copySize);
  if (!check.allowed) { console.warn(check.reason); return; }

  // 3. 取得當前市場價格
  const { price } = await clobClient.getPrice(trade.tokenId, "buy");
  const priceWithSlippage = price * (1 + SLIPPAGE_TOLERANCE);

  // 4. 建立並簽署訂單
  const order = await clobClient.createOrder({
    tokenID: trade.tokenId,
    price: priceWithSlippage,
    side: "BUY",
    size: copySize / priceWithSlippage,  // 換算股數
  });

  // 5. 送出訂單（FOK 模式）
  return await clobClient.postOrder(order, OrderType.FOK);
}

# 使用 PM2 持久化運行（Node.js）
npm install -g pm2
pm2 start dist/index.js --name polymarket-bot
pm2 save
pm2 startup  # 設定開機自動啟動

# 查看日誌
pm2 logs polymarket-bot --lines 100