Polymarket Data

Polymarket Market Data API

Access normalized Polymarket market data through the FinFeedAPI Prediction Market API, including market listings, metadata, trades, quotes, OHLCV, and order book data.

Polymarket has become one of the largest prediction market platforms, allowing participants to trade on the outcomes of elections, financial events, cryptocurrency markets, sports, technology, and global news. Through FinFeedAPI, developers can integrate Polymarket market data using a consistent API designed for live applications, historical analysis, and quantitative research.

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What Is Polymarket?

Polymarket is a decentralized prediction market built on the Polygon blockchain where users trade shares representing the outcomes of real-world events. Instead of betting against a bookmaker, participants trade directly with one another through an open order book, allowing market prices to emerge from supply and demand.

Every market is based on a clearly defined question, such as whether a political candidate will win an election, whether Bitcoin will reach a certain price, or whether a specific event will occur before a given date. Each outcome is represented by tradable Yes and No shares.

Unlike traditional financial markets, Polymarket prices are expressed as values between $0.00 and $1.00, making them easy to interpret as market-implied probabilities. A share trading at $0.72 suggests that market participants currently estimate a 72% probability of that outcome occurring.

Markets are settled onchain after resolution, while users maintain custody of their assets throughout the trading process.

Polymarket at a Glance

Category	Details
Exchange Type	Decentralized prediction market
Trading Model	Peer-to-peer central limit order book (CLOB)
Blockchain	Polygon
Market Structure	Binary prediction markets grouped into events
Price Model	Prices between $0.00 and $1.00 representing implied probabilities
Settlement	Smart contract settlement on Polygon
Resolution	UMA Optimistic Oracle
Asset Custody	Non-custodial

How Does Polymarket Work?

Understanding a few core concepts makes it much easier to work with Polymarket data.

Core mechanics

Binary Prediction MarketsEvery Polymarket market asks a question with two possible outcomes: Yes or No. Each outcome is represented by a tradable token that changes value as market participants update their expectations.

Prices Represent ProbabilityPrices continuously adjust as traders place buy and sell orders. A market trading at $0.40 implies that participants estimate roughly a 40% chance of the event occurring, while a market trading at $0.85 reflects a much stronger consensus.

Peer-to-Peer TradingPolymarket uses a Central Limit Order Book (CLOB) where participants trade directly with one another. Buyers and sellers submit orders that are matched based on price, creating transparent price discovery driven by market activity rather than fixed odds.

Onchain SettlementOrder matching is optimized for speed, while completed trades are settled through smart contracts on Polygon. This combines efficient execution with transparent, blockchain-based settlement.

Event ResolutionWhen the outcome of an event becomes known, Polymarket resolves the market using the UMA Optimistic Oracle. Winning outcome tokens become redeemable, while losing positions expire without value.

What Makes Polymarket Different?

Several characteristics distinguish Polymarket from traditional betting platforms and many other prediction market exchanges.

Market-Based Price Discovery

Prices are determined entirely by market participants. Every trade, bid, and ask contributes to the implied probability displayed for a market, allowing expectations to adjust continuously as new information becomes available.

Blockchain Infrastructure

Polymarket is built on Polygon, where outcome tokens, positions, and settlements are recorded onchain. This provides transparent settlement while allowing users to retain control of their assets.

Event-Centric Market Structure

Markets are organized around real-world events. A single event can contain multiple related markets, making it easier to analyze broader topics such as elections, economic releases, or sporting competitions.

Live Probability Signals

Unlike surveys or manually updated forecasts, Polymarket probabilities change continuously as traders react to breaking news, announcements, and market sentiment.

Research-Friendly Data

Every market generates a stream of metadata, trades, quotes, and order book activity that can be analyzed over time. This makes Polymarket valuable not only for traders, but also for researchers, analysts, and developers building forecasting models.

Access Polymarket Data Through FinFeedAPI

FinFeedAPI provides normalized access to Polymarket through the Prediction Market API, allowing developers to integrate market data without building directly against exchange-specific APIs. All datasets use a consistent structure designed to simplify storage, querying, visualization, and analysis across supported prediction market exchanges.

Market Listings

Active and historical markets with metadata and status.

Latest Market Activity

Current trades, quotes, prices, and volume signals.

Historical Trades & Quotes

Historical market activity for custom UTC time ranges.

OHLCV Data

Aggregated price history across supported intervals.

Order Books

Current market depth and historical limit order updates.

What Can You Build with Polymarket Data?

Polymarket data supports a wide range of analytical and production applications.

Prediction Market Dashboards displaying live probabilities, market status, and trading activity
Quantitative Research using historical trades, OHLCV, and liquidity data to study market behaviour
AI Applications that combine prediction market signals with news, financial data, or LLM workflows
Trading Systems monitoring price changes, spreads, and order book liquidity
Event Monitoring Platforms tracking how market expectations evolve before and after significant real-world events
Historical Analytics comparing market behaviour across elections, macroeconomic announcements, sporting events, or cryptocurrency markets

Why Access Polymarket Through FinFeedAPI?

Building directly against an exchange API often means working with exchange-specific schemas, identifiers, and data models. FinFeedAPI provides a unified interface designed for developers working across multiple prediction market venues.

Benefits include:

One normalized API for multiple prediction market exchanges
Consistent market identifiers and metadata
Standardized trade, quote, OHLCV, and order book formats
Access to both historical and latest market data
Simpler integration for analytics platforms, research systems, and production applications

As additional prediction market exchanges are supported, the same integration can be extended without redesigning your data pipeline.

Polymarket Data

Explore the Prediction Market API

Use the FinFeedAPI Prediction Market API to access normalized Polymarket market data, including market listings, metadata, trades, quotes, OHLCV, and order book data through a single developer-friendly integration.