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NEW: Prediction Markets API

One REST API for all prediction markets data
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The Single API for Top Prediction Markets

Stop building and maintaining custom integrations. Our powerful REST API provides unified access to data from the world's leading prediction market exchanges, including Polymarket, the US-regulated Kalshi, Myriad, and Manifold. Go beyond simple prices with comprehensive OHLCV time-series, live order book data, and the latest trade activity to power your trading application, quantitative analysis, or research.
Get a Free API KeySee Pricing
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4
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Leading prediction market platforms
5
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Years of historical data
1,000
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Markets in a single API call
100K
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Individual data points
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Access Data from Leading Prediction Platforms

Prediction Markets API provides developers with a unified, powerful interface to access latest data from the world's leading prediction market exchanges. Move beyond simple data points and integrate comprehensive market details, including current prices, historical trading activity, and order book snapshots. Our API aggregates data from diverse platforms, from the US-regulated Kalshi to the world's largest market, Polymarket, allowing you to build sophisticated trading bots, perform in-depth quantitative analysis, or create rich data visualizations with a single, seamless integration.
Read Docs
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What you get

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Multi-Exchange Data Aggregation
Access a comprehensive list of all supported exchanges or query for details on a specific one, like Polymarket or Kalshi.
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Current Market Activity
Get the absolute latest trade and quote for any market, ensuring your application has the most current data available.
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Detailed OHLCV Time-Series:
Retrieve extensive Open, High, Low, Close, and Volume (OHLCV) data for any market across a wide range of time periods, perfect for charting and analysis.
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Live Order Book Snapshots
Instantly get the current order book, including all asks and bids, to analyze market depth and liquidity for any market outcome.
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Comprehensive Market Details
Fetch rich information for both active and historical markets, including title, resolution criteria, status (Open, Closed, Resolved), and outcome type (Binary, MultipleChoice, Numeric).
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MCP Compability
Plug the API directly into AI applications with almost no effort.

MCP compability for seamless data integration

FinFeedAPI supports the Model Context Protocol (MCP), an open specification that makes our financial data APIs machine-readable. This allows AI models, autonomous agents, and next-generation crypto apps to programmatically discover and integrate our data with little to no custom code.

Key benefits for users include:

  • Easy AI Integration: Directly connect FinFeedAPI data to large language models (LLMs) and AI agents.
  • Simplified Development: Access all FinFeedAPI services through a single, unified MCP endpoint, eliminating the need for custom wrappers.
  • Increased Reliability: Schema-level validation catches errors and ensures more robust integrations.
  • Future-Proof Design: New services and endpoints are automatically discovered by your applications without requiring client-side updates.

Why this is the best choice for developers

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Build Faster with a Unified API
Instead of writing and maintaining separate integrations for Kalshi, Polymarket, and others, you get all the data you need from a single, reliable source. This drastically reduces development time and complexity.
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Power for Quantitative Analysis
The extreme granularity of our OHLCV endpoint, down to one-second intervals, provides the detailed historical data required for building and backtesting sophisticated quantitative trading models.
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Actionable, Real-Time Insights
Access to live order books and the latest trade/quote data allows you to build applications that don't just display information but can react to market movements and analyze liquidity in real-time.
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Flexible and Permissive
With a developer-friendly MIT License, you have the freedom to build a wide range of applications without restrictive licensing concerns.

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