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NEW: Prediction Markets API

One REST API for all prediction markets data
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Financial Data API for Developers

FinFeedAPI gives developers reliable access to prediction markets data, stocks, real-time exchange rates, and SEC filings — all through one user-friendly API. Simple pricing. Fast integration. No complexity.
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Discover our products

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Stock API

T+1 stock market data delivered through a simple, developer-friendly REST API. Covers IEX, Euronext, and 40+ global stock exchanges.
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Currencies API

Real-time currency data from both crypto markets and traditional FX. Delivered through REST and WebSocket.
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SEC API

Structured SEC filings (10-K, 10-Q, 8-K and more) delivered ready to use. A simple REST API that removes all the parsing work.
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Flat Files S3 API

Direct S3 access to normalized stock market data stored as flat files. Simple to integrate. No unnecessary layers.
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Prediction Markets API

Prediction market data in one place — latest prices, historical OHLCV, and full order books. Available for Polymarket, Kalshi, Myriad and Manifold. Delivered through a simple REST API.
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Resources to start work

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Documentation

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Tutorials

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Glossary

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SDK

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Status page

Built by the Team behind CoinAPI

We've served billions of crypto API requests — and now we're bringing that same reliability and simplicity to other financial data. One user-friendly API. Everything you need in one place.

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Historical stock market data
Access T+1 prices and full OHLCV history for 11,000+ companies across 40+ stock exchanges.
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Real-time and historical currency data
Get live FX rates and deep historical pricing for both fiat and crypto pairs.
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Structured SEC filings
Clean, machine-readable 10-K, 10-Q, 8-K, and more — with over 30 years of U.S. corporate filings
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Prediction Market Data
Historical data, OHLCV, order books, and market details from Polymarket, Kalshi, Myriad, and Manifold in one integration.
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AI-ready through MCP
Use our data directly inside LLMs and AI agents with minimal setup thanks to Model Context Protocol support.
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Multiple ways to connect
Choose REST, JSON-RPC, or WebSocket, based on the product line, integration style and data delivery you prefer.

How FinFeedAPI Helps Businesses

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Build features based on real market history
Teams use the Stock API and SEC API to study past market activity and create products grounded in proven data.
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Support automated trading workflows
Engineering groups use the Prediction Markets API to test ideas, compare outcomes, and run automated strategies without stitching together data sources.
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Improve risk and reporting processes
Risk teams use the Stock API and SEC API to review past events, prepare reports, and run scenario planning.
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Give analysts clean data for research
Researchers use the SEC API, Stock API, and Prediction Markets API to explore trends, build models, and analyze long-term patterns without manual cleanup.
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Power financial products that need currency data
Businesses use the Currency API to keep pricing, payments, and conversions consistent across currencies.
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Help platforms display accurate prices
Marketplaces use the Currency API and Stock API to update values and keep user-facing prices correct.

Use cases

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Use case: Trading platforms

Trading platforms need comprehensive reference data beyond price feeds, but developers struggle with fragmented sources and complex APIs, forcing them to either integrate costly enterprise solutions or build custom infrastructure from scratch.

Learn how we solved that
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Recent Articles

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Exchange rates API

Yuan Sign (¥): Complete Guide to the Chinese Currency Symbol

The yuan sign (¥) is the internationally recognized symbol for the Chinese yuan renminbi, the official currency of the People’s Republic of China. This distinctive symbol appears before numerical values in financial documents, digital displays, and international trade communications worldwide, serving as the standard representation for China’s currency in global commerce.
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Prediction Markets API

Crowd Psychology: How People Think Together During Big Events

How People Think Together During Big Events. When the world accelerates — elections, market shocks, geopolitical tensions — something interesting happens inside the human brain. People don’t think individually. They think collectively.
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Exchange rates API, Exchange rates API

The 7 Major Forex Pairs: A Trader's Guide to Nicknames & Characteristics

If you're diving into the world of market data, you'll quickly find that the forex (FX) market is the biggest of them all, with trillions of dollars traded every day. Unlike stocks, you don't trade one thing in isolation. You're always trading one currency against another in a "pair." The most important of these are the "Major Pairs."
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Prediction Markets API

Crowd Psychology and Prediction Markets: How People Think Together (And Why the Data Matters Today)

Crowd psychology is now measurable thanks to prediction markets. Each trade shows a small piece of what people expect, creating powerful prediction market data.
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Prediction Markets API

AI Has a Reality Problem — Prediction Data Is the Fix

Prediction markets are quickly becoming one of the most valuable data sources in artificial intelligence. While traditional AI models rely on historical information, prediction markets offer something radically different: real-time, crowd-priced probabilities about what will happen next. This article explores how these forward-looking signals help ground LLMs in reality, power more accurate forecasts, and unlock a new generation of predictive AI — all through the FinFeedAPI Prediction Market API.
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Prediction Markets API

The New Obsession: Why Everyone Is Searching for the Next Market Prediction

The world is searching for answers about the next stock market crash, housing reset, and crypto cycle—and prediction markets are becoming the only data source fast enough to keep up. In this deep dive, you’ll see how real-time probabilities reveal signals traditional analysts always miss.
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Prediction Markets API

Polymarket: The Blockchain Prediction Market Changing How the World Forecasts the Future

Polymarket has redefined how people predict the future — turning global events into tradeable markets that reflect collective intelligence in real time. Built on blockchain and powered by cryptocurrency, this decentralized prediction market platform lets anyone trade on real-world outcomes — from elections to interest rates — transforming speculation into data and sentiment into strategy.
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Prediction Markets API

Prediction Markets: Complete Guide to Betting on Future Events

Prediction markets represent a fundamental shift in how we aggregate information about future events. By allowing participants to put money behind their beliefs, these platforms create powerful incentives for accurate forecasting while generating real-time probability estimates that often prove more reliable than traditional methods.
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Prediction Markets API

Prediction Markets Betting: How to Trade on Future Events

Prediction markets betting transforms speculation into a structured financial activity, allowing users to put money behind their convictions about future events. Unlike traditional polls or expert opinions, these markets harness the wisdom of crowds by requiring participants to risk real money on their predictions.
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Prediction Markets API

How Accurate Are Prediction Markets? A Data-Driven Look at Forecasting in 2025

Prediction markets have evolved from niche tools into some of the most accurate real-time forecasting systems available, consistently outperforming polls and expert models in fast-moving events. They react instantly to new information, stay well-calibrated, and are now trusted by analysts, researchers, and developers who need forecasts they can rely on.
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Prediction Markets API

How to Retrieve OHLCV Data from Prediction Markets?

Prediction markets are booming — but their raw data is messy. Instead of stitching together trades and timestamps on your own, you can pull clean, ready-to-use OHLCV candles with a single API call. Here’s how prediction-market OHLCV works and why FinFeedAPI is the fastest way to get it.
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Stock market data APIs, Quantitative trading

Trading Abbreviations: Essential Acronyms Every Trader Should Know

Trading abbreviations have evolved from the early days of floor trading, where hand signals and shouted codes facilitated rapid transactions. Today’s electronic markets have expanded this lexicon exponentially, covering everything from basic order types to sophisticated institutional trading concepts. For beginners, this alphabet soup of acronyms can feel overwhelming, but mastering these terms is essential for trading success.