{"uid":"cap_W6YwoFCrZUzmU5yi-FB_y","slug":"df-market-intelligence-top-prediction-markets-3d172d37","name":"DF Market Intelligence – Top Prediction Markets","description":"Highest-volume live prediction markets across Polymarket and Kalshi with implied probabilities, 24h change, volume and close time. Refreshed every 15 minutes.","url":"https://df-data-agent.vercel.app/api/v1/predictions/top?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":[],"properties":{"limit":{"type":"integer","description":"1-100, default 25"},"source":{"enum":["polymarket","kalshi"],"type":"string","description":"Optional: polymarket or kalshi"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_JiRUGtde17EjKFxzb8fgO","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the highest-volume live prediction markets from Polymarket and Kalshi with implied probabilities, 24h change, volume, and close time, refreshed every 15 minutes.","exampleAgentPrompt":"Show me the top 25 prediction markets by volume right now across both Polymarket and Kalshi — I want the implied probabilities, 24h change, and when each market closes.","exampleUseCases":[{"title":"Daily prediction market briefing","prompt":"Pull the top 50 prediction markets from both Polymarket and Kalshi and summarize which events have the highest trading activity and how their probabilities have shifted in the last 24 hours."},{"title":"Kalshi-only market snapshot","prompt":"Get me the top 25 highest-volume Kalshi prediction markets right now with their current implied probabilities and 24h change."},{"title":"Event probability monitoring for newsletter","prompt":"Fetch the top 10 prediction markets across Polymarket and Kalshi so I can include current crowd-implied probabilities in my weekly forecasting newsletter."}],"resultDescription":"A ranked list of up to 100 prediction markets (default 25) drawn from Polymarket and/or Kalshi, each with market name, implied probability, 24-hour probability change, trading volume, data source, and market close time. Data is refreshed every 15 minutes.","failureModes":["limit out of range (must be 1–100) returns validation error","invalid source enum value returns error","downstream Polymarket or Kalshi data unavailable causes stale or empty results","payment failure ($0.005 USDC) returns 402 Payment Required"],"whenToPreferThis":"Use this endpoint when you need a broad, ranked overview of the most actively traded prediction markets across both Polymarket and Kalshi in a single call, rather than querying each exchange separately. Prefer it over exchange-specific APIs when you want cross-platform volume rankings or don't know which platform has the most relevant market for a given topic.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-28T06:39:39.354Z","isFirstParty":false,"canonicalSlug":"df-market-intelligence-top-prediction-markets-3d172d37"}