Polymarket & Kalshi Arbitrage, Odds & Whale Radar

Kalshi Markets API — Odds, Volume & Open Interest

memo23/kalshi-markets-api

Pull Kalshi prediction markets by keyword, event ticker or watchlist. Yes/no quotes, spread, implied probability, 24h and lifetime volume, open interest, liquidity, settlement rules and resolution windows. Filter by price, volume, open interest and time-to-close before you are billed.

Scans both Polymarket and Kalshi for matching binary prediction markets and identifies price discrepancies where buying YES on one platform and NO on the other guarantees a risk-free profit. Returns ranked opportunities with trade details and return %. Now covers PredictIt too - see our Arb Scanner.

Polymarket Prediction Market Tracker by Category

scrapemint/polymarket-market-monitor

Pull Polymarket prediction markets by category, keyword, min volume, liquidity, and price move. Returns deduped JSON with question, outcomes, prices, 24h volume, and end date. Uses the official Polymarket Gamma API.

Live data from Kalshi, the CFTC-regulated US prediction market: market odds ranked by volume, full L2 order-book depth, and executed trades with volume-weighted average price. No login, no API key, no account required.

Kalshi Scraper — Market Odds, Probabilities & Trade Volume

jy-labs/kalshi-market-data-scraper

Scrape Kalshi prediction market odds, probabilities, candlesticks and trade volume — settled or active, any category. Alert mode monitors live markets via Slack/Discord webhooks. Resumable runs with auto-generated reports.

Polymarket Whale Tracker & Market Data

apimie/polymarket-whales-tracker

Track Polymarket whales and prediction-market data: see who bets big, which markets are heating up, and where smart money is flowing. 7 actions — top whales by volume, wallet positions & history, market lists and snapshots. Free, no setup; add a personal key for deeper, fresher data.

Polymarket Whale Tracker - Live Trades, $0.00225/Trade

gio21/polymarket-whale-tracker-scraper

Track large trades on Polymarket, filtered by minimum USD size, market and side. Wallet, size, price, outcome, market title, tx hash. Filtered trades cost nothing. $0.00225/trade.

A robust scraper for Kalshi.com prediction markets. Automatically extracts market names, prices, volumes, and more for real-time trading insights, analytics, and research applications.

Kalshi + Polymarket Arbitrage Finder — Price Gaps & Odds

signalbench/kalshi-polymarket-scraper

Match the same question across Kalshi and Polymarket and price the YES/NO hedge after fees, with return and days to close. Plus a unified odds feed of every open market and full odds history. Pure API, no browser.

Kalshi Weather Markets — Odds, Brackets & Forecast

lergassy/kalshi-weather-scraper

Every Kalshi daily temperature market — 24 US cities, highs and lows — with per-bracket prices, fair probabilities with the exchange's overround stripped out, and the weather forecast for the exact station a market settles on next to the market's own expected temperature. No API key, no login.