{"uid":"cap_qE56h0YvmUUGy98dqhM3h","slug":"kalshi-event-markets-data-11c6fece","name":"Kalshi Event Markets Data","description":"Open markets on Kalshi, the CFTC-regulated US event exchange, most-traded first: ticker, title, live yes bid/ask (USD, 0-1), mid-quote implied probability, 24h volume, open interest and close time, from the public Trade API v2. Query: ?series=KXBTC (optional series_ticker filter, e.g. KXBTC, KXCPIYOY) &limit=1-25 (default 10). JSON, 5min cache. Cross-reference /v1/predict/polymarket for venue spreads.","url":"https://x402-datashop-production.up.railway.app/v1/predict/kalshi","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","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"limit":{"type":"integer","default":10,"maximum":25,"minimum":1,"description":"Markets to return"},"series":{"type":"string","description":"Kalshi series_ticker filter, e.g. KXBTC (optional)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_RNNLNZ_bCSz0GjwMduDXh","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns live Kalshi CFTC-regulated event market data including yes bid/ask prices, implied probabilities, 24h volume, and open interest, sorted by most-traded first","exampleAgentPrompt":"Show me the top 10 most-traded Kalshi markets right now — I want to see the live yes bid/ask prices, implied probabilities, and 24h volume for the KXBTC series.","exampleUseCases":null,"resultDescription":"A JSON array of up to 25 Kalshi event market objects (default 10), each containing: market ticker, title, live yes bid and ask prices in USD (0–1 scale), mid-quote implied probability, 24-hour trading volume, open interest, and contract close time. Results are sorted by most-traded first and cached for 5 minutes.","failureModes":["Invalid series_ticker returns empty results or 400 error","limit out of range (below 1 or above 25) returns validation error","Kalshi Trade API v2 upstream outage returns 502 or stale cached data","Malformed query parameter type returns 400 bad request","No markets found for given series returns empty array"],"whenToPreferThis":"Use this endpoint when you need live, CFTC-regulated US event market prices from Kalshi — particularly for crypto (KXBTC), CPI (KXCPIYOY), or other macro series. Prefer this over Polymarket when you need regulated US exchange data or want to compare venue spreads via the cross-reference endpoint. Best for agents needing real-time implied probabilities and liquidity metrics from a compliant exchange.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:56:45.385Z","isFirstParty":false}