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"title": "Prediction Markets API β Kalshi & Polymarket Odds",
"description": "Kalshi and Polymarket in one table: implied probability, yes and no price, best bid and ask, 24h move, volume, liquidity and close date for every market. Election odds, sports and economic event contracts, with price history and order book. No API key.",
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"platforms": {
"title": "ποΈ Platforms",
"type": "array",
"description": "Which venues to read. Keep both to get one table across the whole prediction market.",
"items": {
"type": "string",
"enum": [
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"enumTitles": [
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"mode": {
"title": "π What to get",
"enum": [
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"search",
"history",
"orderbook"
],
"type": "string",
"description": "Markets gives one row per tradable contract. Events collapses them into one row per question with every outcome and its probability, which is the shape you want for βwho will winβ questions.",
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},
"query": {
"title": "π Keyword",
"type": "string",
"description": "Filter to markets whose question, event or tags contain this text: fed, election, bitcoin, super bowl."
},
"category": {
"title": "π·οΈ Category or tag",
"type": "string",
"description": "Kalshi category or Polymarket tag: Politics, Economics, Crypto, Sports, Culture, Science. Several at once, comma separated β Politics, Crypto keeps a market matching either."
},
"minVolume": {
"title": "π§ Minimum volume",
"minimum": 0,
"type": "integer",
"description": "Drop thin markets. Both venues list thousands of near-empty contracts; 1000 keeps the ones people actually trade.",
"default": 0
},
"minLiquidity": {
"title": "π§ Minimum liquidity",
"minimum": 0,
"type": "integer",
"description": "Drop markets with less than this much money resting in the book, in US dollars. Polymarket publishes this figure; Kalshi reports zero on almost every market, so on Kalshi use Minimum open interest instead.",
"default": 0
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"minOpenInterest": {
"title": "π Minimum open interest",
"minimum": 0,
"type": "integer",
"description": "Drop markets with fewer than this many contracts still open. This is Kalshi's measure of how much is actually at stake in a market.",
"default": 0
},
"sortBy": {
"title": "βοΈ Sort by",
"enum": [
"volume24h",
"volume",
"liquidity",
"closing",
"probability",
"move24h"
],
"type": "string",
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},
"maxMarkets": {
"title": "π― Maximum markets",
"minimum": 1,
"maximum": 2000,
"type": "integer",
"description": "Cap on rows per run.",
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},
"includeClosed": {
"title": "Include closed and resolved markets",
"type": "boolean",
"description": "Off by default: only markets you can still trade.",
"default": false
},
"marketIds": {
"title": "Market ids",
"type": "array",
"description": "For the history and order-book modes: Kalshi tickers such as KXOAIANTH-40-OAI or Polymarket numeric ids. Leave empty to use the most active markets.",
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"type": "string"
}
},
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"title": "History window, days",
"minimum": 1,
"maximum": 90,
"type": "integer",
"description": "How far back the price history goes.",
"default": 7
},
"seriesTicker": {
"title": "Kalshi series ticker",
"type": "string",
"description": "Narrow Kalshi to one series, for example KXPRESPARTY."
},
"orderbookDepth": {
"title": "Order book depth",
"minimum": 1,
"maximum": 100,
"type": "integer",
"description": "Price levels per side in the order-book mode.",
"default": 10
}
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