PMXT - Prediction Market Exchange Trading Library

A unified API for prediction market exchanges, similar to CCXT.

Features

• Unified API across multiple prediction market exchanges
• TypeScript support with full type definitions
• Common interfaces for markets, orders, positions, and trades
• Extensible architecture for adding new exchanges

Supported Exchanges

• Polymarket (in progress)

Installation

npm install pmxt

pnpm add pmxt

Usage

import { createExchange } from 'pmxt';

// Create an exchange instance
const exchange = createExchange('polymarket', {
  apiKey: 'your-api-key',
  secret: 'your-secret',
});

// Fetch markets
const markets = await exchange.fetchMarkets();

// Fetch ticker
const ticker = await exchange.fetchTicker('YES/NO');

// Create an order
const order = await exchange.createOrder({
  marketId: 'market-id',
  symbol: 'YES/NO',
  type: 'limit',
  side: 'buy',
  amount: 10,
  price: 0.5,
});

// Fetch positions
const positions = await exchange.fetchPositions();

Architecture

• src/base/ - Base Exchange class and interfaces
• src/exchanges/ - Exchange implementations
• src/types/ - TypeScript type definitions
• src/errors.ts - Custom error classes

Development

# Install dependencies
npm install

# Build
npm run build

# Watch mode
npm run watch

License

GNU GPLv3