
Polymarket API
Listed onThe Polymarket API provides event and market discovery, outcome prices and order-book data for research, dashboards and trading applications. Public market-data access is separate from authenticated order placement; international and US venue support differ.
- Categories
- Dev Tool
- Features
- Public market discoveryOrder-book and price dataReal-time market data
Details
DOCUMENTATION CHECKED · 2026-09-29
Who Polymarket API is for
Developers who want direct venue data and can maintain their own ingestion and history.
- Supported venues
- polymarket (international; US support not implied)
- Interface
- api
- Pricing and access
- Public read endpoints are available without a subscription; rate limits apply. Trading and infrastructure costs are separate.
Limitations to consider
- Public reads and authenticated trading are different interfaces.
- You must handle pagination, throttling, stale data and schema changes.

Evidence
Based on public product information. This is not a paid-product test, latency benchmark or performance rating. How we select and check tools.
Similar Tools
Kiyotaka AI / OpenMarketOpenMarket (formerly Kiyotaka AI; kiyotaka.ai now redirects to openmarket.xyz) is a free-to-start charting platform covering crypto, stocks, futures, forex and prediction-market odds, with alerts and AI-agent connections. Its paid API adds Polymarket trader and market analytics on higher tiers.AnalyticsOddpoolOddpool is a prediction-market data API that normalizes markets, historical order books, trades and live probability streams across venues such as Kalshi and Polymarket, with a free tier (1,000 requests/month), Pro $30/month and Premium $100/month. Oddpool was acquired by Kalshi in September 2026.Dev Tool
OddsPipeOddsPipe is a prediction-market data API for comparing matched events across Polymarket and Kalshi. It provides normalized market data, match-confidence scores and spread analysis, with a Python client for research and integration workflows.Analytics
Prediction Hunt / Prediction.comPrediction Hunt is now Prediction.com, a prediction-market odds comparison site covering Kalshi and Polymarket. Its developer API provides matched markets, price history and order-book data for research and cross-venue analysis.Analytics
Kalshi APIThe Kalshi API provides public event, market and order-book data for prediction-market research and application development. Public market-data requests do not require authentication; trading and private account endpoints require credentials.Dev Tool
Browse all tools →