What is PolymarketData?

Discover series, events and markets, then join recorded prices, spread, volume, liquidity and resolution metadata. The documented observations are one-minute; do not treat every series as an event-by-event feed or assume historical book depth includes a full trade tape.

Self-service tiers are Trader, Pro and Ultra, with request volume and granularity selected in the pricing interface. Bulk delivery, derived datasets, custom pipelines and additional support are separately scoped. Confirm each market's first observation rather than assigning the headline archive start to every series.

Who it is for

Researching resolved and active contracts.
Maintaining historical market panels.
Arranging recurring exports or bounded datasets.

Features and coverage

Relational discovery
Navigate series, events and markets.
Price history
Retrieve recorded outcome-price series.
Market metrics
Query spread, volume and liquidity observations.
L2 books
Inspect recorded bid and ask depth.
Resolved events
Join outcomes and historical contract state.
Delivery formats
Use REST, Python, Parquet, CSV or JSON exports.
Custom delivery
Arrange recurring S3 exports or date/category-bounded data.

Workflows with PolymarketData

Build a panel

Discover markets and retain series/event links; query a common period for prices and metrics.

Study settlement liquidity

Join resolution metadata with books and examine spreads and resting size near settlement.

Define a pipeline

Specify format, date range, destination and update cadence for exports.

Pricing and total cost

Trader, Pro and Ultra are self-service tiers. Select request volume and granularity in the provider's pricing interface. Bulk delivery, derived datasets, custom pipelines and additional support cost separately.

Getting started

Before you start: Historical depth and trade tapes are different products.

Read documentation and select the dataset.
Create an account and API key.
Discover a small market set.
Request a bounded history and inspect timestamps.
Choose API pagination or export delivery to match workload.

One-minute historical observations are not necessarily an event-by-event feed.

Read PolymarketData documentation

Useful links

View PolymarketData pricing

What to check

Historical depth and trade tapes are different products.
Ultra does not automatically include bespoke pipelines or derived data.
Actual first observations vary by market.
Observation frequency must match the intended analysis.

A closer look

Ratings & reviews

Editorial rating

3.5/ 5

0 user reviews

PredictionToolkit editorial

Our take on PolymarketData

Delivery formats and distinct coverage descriptions help scope historical work. Observation frequency and separately priced custom products must fit the analysis.

Based on documented features, setup and access terms. How we rate