Markets Tracked
Across all categories
Exchanges
Polymarket & Kalshi
Latency
Real-time updates
Direct from the source
We aggregate data directly from major prediction markets including Polymarket and Kalshi. We own the entire infrastructure so we can ensure quality at each step in the pipeline.
Direct connectivity means faster updates, fewer points of failure, and accurate market data you can depend on for your applications.
About TessRadarPrediction Markets
data processing pipeline
Real-time market data
Everything you need
Our API is easy to use, fast, and reliable, so you can spend less time worrying about data and more time building your app.
Familiar RESTful APIs to consume prediction market data in a language agnostic way. Build with any stack you prefer.
Real-time data at <500ms latency. Complete redundancy, horizontal scalability, and built on proven technologies.
We're passionate about documentation and are always adding more tutorials, example projects, and guides to support developers.
Intuitive access to Polymarket, Kalshi, and other prediction markets in real-time with full historical data.
Market analysis with sentiment tracking from news and social media, plus trading insights via a dedicated research API.
Generous free tier and simple, transparent monthly pricing. Pay only for what you use.
Unlock cross-exchange alpha with real-time arbitrage scanning and deep liquidity aggregation across Polymarket, Kalshi, and more.
Live price discrepancies across exchanges.
Aggregated orderbooks and volume analytics.
Developer-first API
Clean JSON responses, comprehensive documentation, and predictable endpoints.
List all prediction markets with filtering and pagination
{ "data": [ { "id": "58c5cea0-389b-4323-9dab-d8016929261d", "createdAt": "2026-01-15T00:40:44.500Z", "updatedAt": "2026-01-22T07:31:43.027Z", "exchangeId": "POLYMARKET", "externalMarketId": "0x64b14a09a6cf9dc02b840bc83f4dcfd41ca6108544c47ecabc6e5d00bc15fd2e", "slug": "us-strikes-iran-by-january-14-2026-913", "ticker": null, "question": "US strikes Iran by January 14, 2026?", "description": "This market will resolve to \"Yes\" if the US initiates...", "category": "Other", "subcategory": null, "imageUrl": "https://polymarket-upload.s3.us-east-2.amazonaws.com/us-strikes-iran-by-october-3-2sVnIHq3sjqF.jpg", "status": "ARCHIVED", "resolveTime": "2026-01-14T00:00:00.000Z", "resolvedAt": null, "resolutionValue": null, "liquidity": 162261.69196, "volume": 11790125.825313, "volume24h": 9885508.208227985, "matchGroupId": null } ], "pagination": { "total": 298393, "limit": 1, "offset": 0, "hasMore": true }}Purchase credits as you go with seamless crypto payments. No monthly subscriptions, no hidden fees.