Market Data

Prediction market data,
unified and searchable

41M+ markets from Polymarket and Kalshi in one consistent schema. Query by platform, category, status, or date — via REST API or direct SQL.

Get Started

41M+

Markets indexed

Platforms unified

2020

Data since

<1min

Refresh interval

Unified Schema

One schema for all platforms

Polymarket uses condition IDs and token pairs on Polygon. Kalshi uses event hierarchies and series tickers. We receive updates via WebSocket and normalize both into one clean, consistent data model in near real-time.

REST API with filtering by platform, category, status, and date range
Direct SQL queries via ClickHouse on the markets table
Monthly Parquet file exports for bulk analysis

Market SchemaSample fields

Field	Type	Description
id	String	Unique market identifier
platform	String	Source platform (polymarket, kalshi)
title	String	Market question or title
description	String	Full market description
outcomes	Array	Possible outcomes (e.g. Yes, No)
category	String	Market category
status	String	Market status (active, resolved, closed)
open_date	DateTime	When the market opened
close_date	DateTime	When the market closes
resolution_date	DateTime	When the market resolved

View full schema in docs →

REST API

Query markets via API

Fetch markets with powerful filtering. Paginated responses, consistent format across all platforms. 3,000 requests per 10 seconds.

GET/api/v1/markets

200 OK

{
  "data": [
    {
      "id": "poly_0x1234...",
      "platform": "polymarket",
      "title": "BTC above $100k?",
      "status": "active",
      "outcomes": ["Yes", "No"],
      "category": "crypto",
      "close_date": "2026-12-31T00:00:00Z"
    }
  ],
  "meta": { "total": 41200000, "page": 1 }
}

SQL Access

Query markets with SQL

Connect to ClickHouse and run analytical queries directly on the markets table. Count markets by category, track resolutions, or export results.

SQL Console

ClickHouse

-- Market counts by platform and status
SELECT
  platform,
  status,
  count() as market_count
FROM markets FINAL
GROUP BY platform, status
ORDER BY market_count DESC

6 rows · 1.2s Run Query

Coverage

Platform breakdown

Markets from every major prediction market platform, normalized to one schema.

Platform	Markets	Since	Type	Status
Polymarket	813K+	2020	Blockchain (Polygon)	Live
Kalshi	40M+	2021	US-regulated (CFTC)	Live
PredictIt	—	—	US-based	Soon
Metaculus	—	—	Forecasting	Soon

Use Cases

What you can do with market data

Market Discovery

Search and filter across 41M+ markets from all platforms. Find markets by category, status, or keyword.

Market Analytics

Analyze market creation patterns, category distributions, and resolution rates across platforms.

Cross-Platform Comparison

Compare how the same events are structured across Polymarket and Kalshi with our unified schema.

Automated Monitoring

Track new market creation, status changes, and resolutions programmatically via the API.