> ## Documentation Index
> Fetch the complete documentation index at: https://docs.revalonlabs.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# What is Arbitrage? Prediction Market Intelligence API

> Arbitrage aggregates seven prediction market venues into one API — unified pricing, real-time arbitrage detection, and semantic market matching.

Arbitrage 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.

## What Arbitrage gives you

**Cross-platform arbitrage detection.** Arbitrage 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.** Arbitrage 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.

## Supported platforms

Arbitrage currently indexes **seven** prediction market venues:

| Platform    | Slug         |
| ----------- | ------------ |
| Polymarket  | `polymarket` |
| Limitless   | `limitless`  |
| Predict.fun | `predictfun` |
| Manifold    | `manifold`   |
| PredictIt   | `predictit`  |
| Azuro       | `azuro`      |
| Drift       | `drift`      |

## 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.

## Base URL

All API requests go to:

```text theme={null}
https://api.predexy.com
```

A staging environment is available at `https://staging-api.predexy.com` for testing without affecting production data.

<Note>
  API keys are required for the external arbitrage endpoint and programmatic access. You can create keys in the Developer Console after registering an account.
</Note>

## Where to go next

<CardGroup cols={3}>
  <Card title="Quickstart" icon="rocket" href="/quickstart">
    Make your first API call in five minutes — register, create a key, and fetch arbitrage opportunities.
  </Card>

  <Card title="Authentication" icon="key" href="/authentication">
    Learn how API keys and session tokens work, and how to pass credentials in your requests.
  </Card>

  <Card title="API Reference" icon="code" href="/api-reference">
    Full reference for every endpoint, request schema, and response field.
  </Card>
</CardGroup>