Data Infrastructure

Built for Serious
Market Research and Trading

Explore the data, API capabilities, and use cases that power quantitative research and trading strategies across every Polymarket category.

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GLOBAL MARKETS
LIVE
Market Coverage

All Polymarket Categories Indexed

We index all categories available in Polymarket markets. The cards below are representative examples, not an exhaustive list.

Politics

Election and policy-related markets.

Examples

US electionsPolicy outcomes
Sports

Leagues, tournaments, and player-level outcomes.

Examples

Super BowlNBA Finals
Crypto

Price levels, protocol events, and approvals.

Examples

BTC levelsETF approvals

Economy & Finance

Macro indicators and financial-event markets.

Examples

CPI releasesFed decisions

Tech & AI

Technology and AI milestone markets.

Examples

Model releasesProduct launches

World & Culture

Global affairs, science, and culture-related markets.

Examples

GeopoliticsWeather and climate

PolymarketData provides historical access across all Polymarket categories through queryable series, events, markets, prices, metrics, and order book data.

450k+
Markets Indexed
10B+
Data Points

Comprehensive Data Coverage

Everything you need for professional backtesting and research, captured at 1-minute intervals across all active markets.

L2 Order Books

Full bid/ask depth at every snapshot. Reconstruct the exact market state at any historical moment.

{  "bids": [{"price": "0.49", "size": "1120"}, ...],  "asks": [{"price": "0.51", "size": "980"}, ...]}json

Price & Volume

Last trade price, 24h volume, and historical price series for trend analysis and signal generation.

{  "price": 0.52,  "volume_24h": 125450.80,  "price_change_24h": 0.04}json

Liquidity Metrics

Total liquidity, spread, and depth metrics to understand market efficiency and slippage risk.

{  "liquidity": 1613500.75,  "spread": 0.02,  "depth_1pct": 45000}json

Full Metadata

Series, events, markets, tokens, and outcomes. Complete relational structure for any query pattern.

{  "series_id": "2024-election",  "event": "Presidential Winner",  "market": "Trump vs Harris"}json
API + SDK

REST API + Python SDK

Discover markets, then query historical metrics, prices, and books with shared parameters. The Python SDK wraps the same API surface for faster research workflows.

Endpoint map

  • Discovery

    /v1/series, /v1/events, /v1/markets

  • History

    /v1/markets/{id_or_slug}/metrics, /prices, /books

  • Utility

    /v1/health, /v1/usage

python-sdk-quickstart.py
Docs
# pip install polymarketdata-sdkfrom polymarketdata import PolymarketDataClient# API key can also be set via POLYMARKETDATA_API_KEYwith PolymarketDataClient(api_key="YOUR_API_KEY") as client:    health = client.utility.health()    usage = client.utility.usage()    print(health.status)    print(usage.plan)    print(usage.limits.requests_remaining)python
SDK DocsGet API Key

Built for Your Use Case

Built for backtesting, quantitative research, market making, and academic analysis on historical prediction market data.

Backtesting

Validate trading strategies against historical market states. Replay order books to simulate realistic execution.

Alpha Research

Discover patterns in prediction market behavior. Analyze how markets price information and resolve over time.

Academic Research

Study prediction market efficiency, information aggregation, and forecasting accuracy with granular data.