{"slug":"api-chainmarket-api-workers-dev-api-finance-kalshi-predictio-b5c623","title":"Kalshi (US regulated prediction exchange) open events and their markets","host":"api.chainmarket-api.workers.dev","method":"GET","resource":"https://api.chainmarket-api.workers.dev/api/finance/kalshi-prediction-markets","category":"market","description":"Kalshi (US regulated prediction exchange) open events and their markets: event title, category, series, and per market the question, yes/no bid and ask, last price (= implied probability), 24h and total volume, open interest, close time and rules. Filter by series ticker (e.g. KXFED, KXBTC) or categ","price_listed":0.002,"price_asked":0.002,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":37,"reported_calls_30d":2,"reported_payers_30d":2,"networks":["eip155:10","eip155:137","eip155:143","eip155:42161","eip155:42220","eip155:480","eip155:5042","eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","stellar:pubnet","xrpl:0"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"category":"","limit":"10","series":""},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"category":{"description":"Optional category filter (case-insensitive substring), e.g. Economics, Politics, Sports, Crypto","type":"string"},"limit":{"description":"How many events, 1 to 100 (default 10)","type":"string"},"series":{"description":"Optional Kalshi series ticker, e.g. KXFED, KXBTCD, KXELONMARS","type":"string"}},"required":[],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.002,"price_match":true,"latency_ms":37,"error":null}],"description_full":"Kalshi (US regulated prediction exchange) open events and their markets: event title, category, series, and per market the question, yes/no bid and ask, last price (= implied probability), 24h and total volume, open interest, close time and rules. Filter by series ticker (e.g. KXFED, KXBTC) or category text. From Kalshi's official public market-data API via a proxy; prices in USD per $1 contract.","last_updated":"2026-10-23T22:15:01.633Z","schemes":["exact"]}