Platform: Polymarket

Polymarket data,
unified with the ecosystem

580K+ markets, 650M+ trades normalized to our unified schema. Compare with Kalshi instantly. No blockchain indexing required.

Get Started

580K+

Markets indexed

650M+

Trades tracked

2020

Data since

~10ms

Update latency

Polymarket + Cross-Platform

More than just Polymarket data

Get Polymarket data AND see how it compares to the same event on Kalshi. We've already matched the events for you.

Same schema as Kalshi data
Cross-platform event linking included
Compare prices across platforms instantly
Spot arbitrage opportunities automatically

polymarket-cross.js

// Get Polymarket market WITH cross-platform prices
const res = await fetch('https://api.probalytics.io/v1/markets/polymarket:btc-100k')
const market = await res.json()

// Automatically includes linked markets!
console.log(market.price)           // 0.52
console.log(market.crossPlatform)
// {
//   kalshi: { id: 'KXBTC...', price: 0.48 }
// }

The Problem

Why not access Polymarket directly?

Polymarket runs on Polygon. Getting reliable data means dealing with blockchain infrastructure.

Running an indexer

You need to run and maintain blockchain infrastructure to index Polymarket data.

Handling reorgs

Chain reorganizations can invalidate your indexed data. You need to handle rollbacks.

RPC rate limits

Public RPC endpoints have strict rate limits. You need your own node or paid RPC.

CLOB complexity

Polymarket's CLOB (Central Limit Order Book) has its own complexities to understand.

With Probalytics

We handle all the blockchain complexity. You get clean, normalized data through a simple API. Real-time streaming, historical data, cross-platform comparison - all without touching a blockchain.

Coverage

What we index from Polymarket

Markets

All market metadata, questions, categories, end dates

580K+

Trades

Every trade with timestamp, price, size, side

650M+

Orderbooks

Orderbook snapshots and real-time updates

Real-time

Resolutions

Market outcomes and resolution timestamps

300K+

Prices

Historical price data at multiple intervals

Since 2020

Unified Schema

Polymarket data, normalized

We map Polymarket's blockchain-specific fields (token IDs, condition IDs, CLOB data) to our unified event model. Same schema as Kalshi.

conditionIdmarket.id

outcome tokensmarket.outcomes[]

CLOB pricemarket.price

Unified Market Object

{
  "id": "polymarket:btc-100k",
  "platform": "polymarket",
  "question": "BTC above $100k?",
  "price": 0.52,
  "volume24h": 1240000,
  "endDate": "2024-12-31",
  "crossPlatform": {
    "kalshi": { "price": 0.48 }
  }
}

Access Polymarket Data

Ready to access Polymarket data?

Start accessing Polymarket data today. No blockchain infrastructure required.

Also interested in other platforms? Check out Kalshi data

Polymarket data,unified with the ecosystem