MassPredict API

Access aggregated prediction market data across 8+ platforms including Polymarket, Kalshi, Manifold, and PredictIt. Build dashboards, power trading bots, or integrate real-time odds into your applications.

Overview

The MassPredict API will provide RESTful endpoints to access aggregated market data, cross-platform price comparisons, arbitrage opportunities, and real-time resolution tracking. Build custom trading tools, analytics dashboards, or integrate prediction market intelligence into your workflow.

                        Example Request
                        Preview
                    

const response = await fetch('https://api.masspredict.ai/v1/markets', {
    headers: { 'Authorization': `Bearer ${API_KEY}` }
});
const markets = await response.json();
// Returns 79,000+ markets across 8 platforms
                    

What You Can Build

The MassPredict API is designed for traders, researchers, and developers who need reliable prediction market data.

Trading Bots

Automate trading strategies with real-time price feeds and arbitrage detection.

Analytics Dashboards

Build custom dashboards tracking market movements across all platforms.

Research Tools

Access historical data and resolution tracking for academic research.

Embeddable Widgets

Embed live market odds and charts into your website or app.

Planned Endpoints

Here's a preview of the endpoints we're building.

Markets

GET /v1/markets List all markets

GET /v1/markets/{id} Get market details

GET /v1/markets/search Search markets

Prices

GET /v1/prices/{market_id} Get current prices

GET /v1/prices/history Historical price data

Arbitrage

GET /v1/arbitrage Active opportunities

GET /v1/arbitrage/alerts Configure alerts

Platforms

GET /v1/platforms List all platforms

GET /v1/platforms/{id}/status Platform health

Data Coverage

Our API aggregates data from the leading prediction market platforms.

79,000+ Markets

Tracked across all platforms

8 Platforms

Polymarket, Kalshi, Manifold, PredictIt, Metaculus & more

11,000+ Resolutions

Historical resolution tracking

18M+ Data Points

Price history and analytics