Polymarket Documentation

Build on the world’s largest prediction market. APIs, SDKs, and tools for prediction market developers.

Developer Quickstart

Make your first API request in minutes. Learn the basics of the Polymarket platform, fetch market data, place orders, and redeem winning positions.

Get Started →

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

const client = new ClobClient(host, chainId, signer, creds);

const order = await client.createAndPostOrder(
  { tokenID, price: 0.50, size: 10, side: Side.BUY },
  { tickSize: "0.01", negRisk: false }
);

Get Familiar with Polymarket

Learn the fundamentals, explore our APIs, and start building on the world’s largest prediction market.

Quickstart

Set up your environment and make your first API call in minutes.

Core Concepts

Understand markets, events, tokens, and how trading works.

API Reference

Explore REST endpoints, WebSocket streams, and authentication.

SDKs

Official Python and TypeScript libraries for faster development.

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Builder Program

Build apps on Polymarket and earn rewards for driving volume

Help Desk

Get support, report issues, and find answers to common questions

Status

Check API uptime, service health, and incident reports