SDK for prediction market trading including Polymarket, Kalshi, Limitless, and more
npm install prediction-sdkSDK for prediction market trading including Polymarket, Kalshi, Limitless, and more.
``bash`
npm install prediction-sdk
#### 1. 初始化客户端
`typescript
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
`typescript`
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：
`typescript
// 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
`typescript
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
`typescript
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',
})
}
`
#### 格式化金额
`typescript
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
`typescript
import { isGnosisSafe } from 'prediction-sdk'
const isSafe = await isGnosisSafe('0x...', 'https://polygon-rpc.com')
`
`bash安装依赖
bun install
ISC