Kalshi Prediction Market Scraper: Live Event Odds

Live market data from Kalshi, the CFTC-regulated US event contract exchange. Every market is a real-money yes/no question - who wins the game, where the Fed sets rates, how hot the summer gets - and the price is the crowd's probability. This actor reads those markets through Kalshi's public API and gives you clean rows.

What you get

One row per market:

Field	Description
eventTitle, outcome	The question and the specific outcome this market prices
yesBid, yesAsk, noBid, noAsk	Live order book, in dollars (0 to 1)
lastPrice	Last trade price
impliedProbabilityPct	Book midpoint (or last trade) as a percentage
volume, volume24h, openInterest	Activity and positioning
openTime, closeTime, status, result	Lifecycle
rules	Exact resolution criteria
ticker, eventTicker, seriesTicker, category	Identifiers for joins

Three ways to query

1. Discovery - pick categories (Politics, Economics, Sports, Financials, Climate and Weather, Culture, Crypto...) and optional keywords; the actor browses open events and returns matching markets.
2. Event tickers - exact events like KXNEWPOPE-70.
3. Series tickers - everything in a recurring series, like Fed decisions or monthly CPI.

Typical uses

• Traders and arb hunters: compare Kalshi prices against Polymarket and sportsbook lines. Pairs with our Polymarket Prediction Market Scraper for a two-exchange view.
• Researchers and journalists: probability time series on elections, rates, and geopolitics - schedule the actor and build your own history.
• Dashboards and newsletters: structured event odds without touching an exchange account.
• Sports analytics: event contract prices on games as a sharp, regulated reference line.

Pricing

You pay per market row (market_row). The first 2 rows of every run are free. Unknown tickers and searches with no matches cost nothing.

Input example

{
    "categories": ["Economics"],
    "keywords": ["Fed", "CPI", "inflation"],
    "onlyPriced": true,
    "minVolume": 100,
    "maxRows": 100
}

Notes

• Data comes from Kalshi's public market-data API. No account, no API key, no browser. This actor reads prices; it does not trade.
• Prices are dollars per contract that pays $1, so 0.63 means a 63% implied probability.
• onlyPriced (default on) skips empty order books and long-dated combo markets that have never traded.
• Kalshi rate limits are handled: the actor paces requests, retries once, and stops cleanly with partial data if limits persist.

Run it on a schedule

Most people run this every 5 to 60 minutes. In Apify Console open the actor, go to Schedules, and pick the interval with your saved input. Each run adds a fresh snapshot, so over time you build your own probability history for every market you track. Send every run to Google Sheets, Slack, Telegram or your own webhook under Integrations, or start runs from code:

$curl -X POST "https://api.apify.com/v2/acts/scrapemint~kalshi-prediction-market-scraper/runs?token=YOUR_TOKEN" -H "Content-Type: application/json" -d '{}'

Related actors

• Kalshi Trades: Live Tape, Whale Trades and Price History: every fill and whale trade behind the prices, plus candles
• Prediction Market Arbitrage: Kalshi vs Polymarket vs PredictIt: the same question priced on three venues, with locked-in arbitrage
• Kalshi Weather Markets: Prices vs Forecast Odds: temperature and rain markets next to an ensemble forecast
• Polymarket Trade Intelligence: Order Book and Prices: the other big prediction market
• Polymarket Whale Tracker: Big Bets and Smart Money: large Polymarket bets as they happen