Apify Actor
Prediction Markets Scraper: Polymarket & Kalshi
Live odds from both exchanges in one schema — probability, bid/ask, volume, liquidity, close dates.
Coming soon — store listing in review. Questions: [email protected]
Pay per result on Apify. Runs that return nothing cost nothing; Apify's free plan includes $5 of usage a month.
Pull every market from Polymarket and Kalshi with its current probability, best bid and ask, last trade, 24h and total volume, liquidity, open interest, price changes, opening and closing dates, category, tags and resolution rules — filtered by keywords, status, tags, categories and minimum volume, sorted by activity or by what ends soonest.
Both platforms are read through their public APIs: exact numbers, no scraping of HTML, no account. Schedule it hourly for a time series or an alerting feed.
What you get
- • Polymarket and Kalshi, one schema
- • Keyword, status, tag/category and volume filters
- • Sort by 24h volume, total volume, liquidity, newest or ending soon
- • Price momentum: 1h/1d/1w/1m changes
- • Monitored daily
Typical uses
- • Odds dashboards and alerts
- • Cross-platform arbitrage screens
- • Time series of market prices
- • Newsletters about what markets expect
Output
| platform, eventTitle, question, url | Where and what |
| yesPrice, noPrice, probability, outcomes[] | Prices |
| bestBid, bestAsk, lastTradePrice, spread | Order book top |
| volume, volume24h, liquidity, openInterest, priceChange1d | Activity |
| startDate, endDate, status, category, tags, resolutionSource | Lifecycle and context |