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Predexy is a prediction market intelligence platform that pulls live data from seven venues — Polymarket, Limitless, Predict.fun, Manifold, PredictIt, Azuro, and Drift — and exposes it through a single, normalized API. Instead of maintaining seven separate integrations to compare prices or find mispricings, you make one request to Predexy and get back consolidated market data, volume-weighted index prices, and scored arbitrage opportunities, all fee-adjusted and ready for action.

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What Predexy gives you

Cross-platform arbitrage detection. Predexy scans all seven venues continuously and surfaces opportunities where the same question is priced differently across platforms. Each opportunity is scored 0–100 and classified as actionable, informational, or noise based on spread magnitude, liquidity depth, 24-hour volume, and time to market expiry. Unified market index. Every canonical question gets a volume-weighted index price — a consensus probability computed from all platforms listing that question. You also get per-platform prices, divergence metrics, and the cheapest buy price across the board, so your research or UI always reflects the full picture. Semantic question matching. Predexy uses embedding-based matching to link the same question across platforms even when the wording differs (for example, “Bitcoin to $100k before 2026?” on Polymarket and “Will BTC hit six figures by end of 2025?” on Manifold). You query the canonical question once and get all linked markets back.

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Supported platforms

Predexy currently indexes seven prediction market venues:
PlatformSlug
Polymarketpolymarket
Limitlesslimitless
Predict.funpredictfun
Manifoldmanifold
PredictItpredictit
Azuroazuro
Driftdrift

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Common use cases

  • Trading bots — Poll GET /api/v1/external/arbitrage/opportunities on a schedule using an API key, filter for classification=actionable, and feed results into your execution layer.
  • Research dashboards — Use the discovery endpoint to display a unified view of active markets with index prices and divergence scores, without building separate connectors for each venue.
  • Arbitrage detection tools — Subscribe to the arbitrage feed and route STRICT-guarantee opportunities to one workflow and QUASI to another based on your risk tolerance.
  • Portfolio trackers — Query per-platform market data to reconcile open positions across venues in a single data model.

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Base URL

All API requests go to: 
https://api.predexy.com
A staging environment is available at https://staging-api.predexy.com for testing without affecting production data.
API keys are required for the external arbitrage endpoint and programmatic access. You can create keys in the Developer Console after registering an account.

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Where to go next

Quickstart

Make your first API call in five minutes — register, create a key, and fetch arbitrage opportunities.

Authentication

Learn how API keys and session tokens work, and how to pass credentials in your requests.

API Reference

Full reference for every endpoint, request schema, and response field.