{"uid":"cap_60lkTX_RmUhlXnwGLlw4H","slug":"gapup-prediction-markets-search-75ff59a8","name":"Gapup Prediction Markets Search","description":"Search live prediction markets across Polymarket and Kalshi in one call, with a single normalised shape: question, implied probability 0-1, volume, end date, venue and URL.","url":"https://mcp.gapup.io/api/v1/call/prediction_markets_search?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"async":{"type":"boolean","description":"If true, returns a job_id immediately (<200ms) instead of waiting for the result. Poll the result with job_result(job_id). Use for slow tools to avoid client timeouts."},"limit":{"type":"integer","maximum":50,"minimum":1,"description":"Maximum markets to return (default 20)"},"query":{"type":"string","maxLength":200,"description":"Free-text filter on the market question. Omit to get the most active markets."},"venues":{"type":"array","items":{"enum":["polymarket","kalshi"],"type":"string"},"description":"Which venues to query (default both)"},"includeRaw":{"type":"boolean","description":"Include each venue's original fields (default false)"},"includeClosed":{"type":"boolean","description":"Include settled markets (default false)"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.008","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.008/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_R-oLxGvqQGoxNyA5CmeZP","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.008","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Search and filter live prediction markets across Polymarket and Kalshi, returning normalized results with implied probability, volume, end date, and URLs.","exampleAgentPrompt":"Search both Polymarket and Kalshi for active prediction markets about Federal Reserve interest rate cuts, show me up to 10 results with their implied probabilities and end dates.","exampleUseCases":[{"title":"Election probability tracking","prompt":"Find prediction markets about the 2024 US presidential election on both Polymarket and Kalshi — I want to see the current implied probabilities and which markets have the most volume."},{"title":"Macroeconomic market monitoring","prompt":"Search for active prediction markets about a US recession or GDP growth — look across both venues and give me up to 15 results with their probabilities and expiry dates."},{"title":"Crypto event outcome lookup","prompt":"What do Polymarket and Kalshi prediction markets say about Bitcoin ETF approval? Show me the top 5 most relevant markets with their implied odds."}],"resultDescription":"Returns a normalized list of prediction markets, each with: question text, implied probability (0-1), trading volume, end/expiry date, source venue (Polymarket or Kalshi), and a direct URL. Optionally includes each venue's raw native fields if includeRaw is set to true.","failureModes":["Query string too long (over 200 characters) causes validation error","Unsupported venue name in venues array returns 400","No matching markets for a very specific query returns empty results list","Venue API downtime may cause partial results from only one venue","Async polling timeout if job_id result is not retrieved in time"],"whenToPreferThis":"Use this endpoint when you need a single, normalized view of prediction market probabilities across both Polymarket and Kalshi without writing separate integrations for each platform. Prefer this over direct venue APIs when you want cross-platform comparison, normalized probability scores, or unified volume and metadata in one call. Ideal for agents needing real-time crowd-sourced probability estimates on political, economic, or current-events questions.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T12:52:24.165Z","isFirstParty":false,"canonicalSlug":"gapup-prediction-markets-search-75ff59a8"}