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polymarket-helper

v1.0.3

Published

SDK for prediction market trading including Polymarket, Kalshi, Limitless, and more

Readme

Prediction SDK

SDK for prediction market trading including Polymarket, Kalshi, Limitless, and more.

安装

npm install prediction-sdk

使用教程

Polymarket

1. 初始化客户端

import Polymarket from 'prediction-sdk'

const polymarket = new Polymarket({
  rpcUrl: 'https://polygon-rpc.com',  // Polygon RPC 端点
  privateKey: '0x...',                 // 你的私钥
})

2. 创建客户端连接

await polymarket.createClient()

3. 授权交易(首次使用需要)

在交易前,需要授权 Polymarket 交易所管理你的代币:

// 检查是否已授权
const isApproved = await polymarket.isApproved()

if (!isApproved) {
  // 授权交易所管理所有代币
  await polymarket.approvalAll()
}

4. 提交订单

import { UserMarketOrder } from '@polymarket/clob-client'

const order: UserMarketOrder = {
  market: '0x...',           // 市场合约地址
  side: 'YES',               // 'YES' 或 'NO'
  size: '1000000000',        // 订单数量(原始单位)
  price: '0.5',              // 价格(0-1之间)
}

await polymarket.postOrder(order)

完整示例

import Polymarket from 'prediction-sdk'

async function trade() {
  // 1. 初始化
  const polymarket = new Polymarket({
    rpcUrl: 'https://polygon-rpc.com',
    privateKey: process.env.PRIVATE_KEY!,
  })

  // 2. 创建客户端
  await polymarket.createClient()

  // 3. 检查并授权
  if (!(await polymarket.isApproved())) {
    await polymarket.approvalAll()
  }

  // 4. 提交订单
  await polymarket.postOrder({
    market: '0x...',
    side: 'YES',
    size: '1000000000',
    price: '0.5',
  })
}

工具函数

格式化金额

import { formatClobAmount } from 'prediction-sdk'

// 将原始金额转换为可读格式
const amount = formatClobAmount('1000000', 6)  // "1.0" (USDC)

检查是否为 Gnosis Safe

import { isGnosisSafe } from 'prediction-sdk'

const isSafe = await isGnosisSafe('0x...', 'https://polygon-rpc.com')

开发

# 安装依赖
bun install

# 构建
bun run build

# 开发模式(监听文件变化)
bun run dev

License

ISC