Prophed Common Markets

Prophed Common Markets exports matched prediction markets across multiple platforms as normalized Apify dataset rows. It is designed for analysts, trading dashboards, market researchers, arbitrage monitoring, and AI agents that need one clean feed instead of separate Polymarket, Kalshi, Manifold, Futuur, PredictIt, Limitless, Opinion, and Predict.fun integrations.

The Actor calls a Prophed Common Markets API endpoint, applies client-side filters, ranks the results, and emits one dataset row per common market. Each row includes the matched question, category, platform count, total volume, total liquidity, best price, average spread, average similarity, top outcome, best platform, source URL, and optional per-platform outcome details.

Input

• apiBaseUrl: Base URL for the Prophed API. The default is the Cloudflare Access protected Prophed export route used by this Actor.
• apiPath: API path that returns common markets JSON. The default is /api/common-markets.
• apiKey: Optional private API key. Use Apify secrets for this value.
• apiKeyHeaderName: Header name for the optional API key. The default is apikey.
• cfAccessClientId: Optional Cloudflare Access service-token client ID. Use an Apify secret.
• cfAccessClientSecret: Optional Cloudflare Access service-token client secret. Use an Apify secret.
• limit: Number of markets requested from Prophed. The current Prophed endpoint supports up to 500.
• maxItems: Maximum dataset rows emitted after filters.
• minPlatformCount: Require markets to be matched across at least this many platforms.
• minTotalVolume: Require minimum matched market volume.
• platforms: Optional list of required platforms. A market is emitted if at least one platform matches.
• categories: Optional category allow-list.
• sortBy: Sort output by total_volume, platform_count, average_spread, best_price, or average_similarity.
• includePlatforms: Include per-platform market details.
• includeOutcomes: Include per-platform outcomes.
• maxOutcomesPerPlatform: Cap outcome arrays.
• includeRawMarket: Attach the raw source market object for debugging.
• timeoutSecs: Prophed API request timeout.
• failOnSourceError: Fail the run if Prophed cannot be fetched.

Example input:

{
  "apiBaseUrl": "https://v1.prophed.com",
  "apiPath": "/api/common-markets",
  "limit": 100,
  "maxItems": 100,
  "minPlatformCount": 2,
  "minTotalVolume": 1000,
  "platforms": ["polymarket", "kalshi"],
  "sortBy": "total_volume",
  "includePlatforms": true,
  "includeOutcomes": true
}

Output

Each dataset item represents one cross-platform common market:

{
  "marketId": "common-1",
  "question": "Will BTC be above $100k by year end?",
  "category": "Crypto",
  "platformCount": 3,
  "platformNames": ["polymarket", "kalshi", "manifold"],
  "totalVolume": 100000,
  "totalLiquidity": 25000,
  "bestPrice": 0.64,
  "averageSpread": 0.08,
  "averageSimilarity": 0.91,
  "topOutcomeName": "Yes",
  "bestPlatform": "polymarket",
  "platforms": []
}

Pricing

This Actor is configured for PAY_PER_EVENT monetization. It charges per dataset row emitted, so users pay in proportion to the number of common markets they export.

Notes

The public prophed.com website may be protected by Cloudflare browser challenges. For reliable Apify operation, use a bot-friendly internal Prophed API URL or a dedicated export route protected by Cloudflare Access service-token headers and, optionally, an additional API key.