Polymarket × Kalshi Arbitrage Scanner

Polymarket + Kalshi Arbitrage Finder

maximedupre/prediction-market-arbitrage-finder

Compare public Polymarket and Kalshi binary markets. Get ranked theoretical arbitrage opportunities with prices, opposing legs, liquidity, match confidence, and direct market links.

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.

Finds matched markets across Polymarket and Kalshi and computes fee-adjusted, order-book-depth-aware arbitrage edges. Monitor mode emits only new or changed opportunities and can push webhook alerts.

Unified live odds & implied probabilities from Polymarket and Kalshi in one feed. No key.

Scrape Polymarket and Kalshi prediction markets in one run. Odds, prices, volume and close dates on one schema, as JSON or CSV.

Polymarket & Kalshi Scraper - Odds, Markets & Arbitrage

scrapesage/prediction-markets-scraper

Scrape Polymarket & Kalshi prediction markets: live odds & implied probability, 24h/weekly volume, liquidity, order flow (trades), top holders, wallet P&L, price history, and cross-platform arbitrage. Keyless, no browser. Monitor mode tracks odds moves and new markets. Export to JSON, CSV or Excel.

Prediction Market Scanner — Polymarket vs Kalshi

0xgollum/prediction-market-scanner

Search any topic and get live binary markets from Polymarket and Kalshi side by side — YES/NO prices, volume and links. Pairs the same yes/no question across both platforms and shows how their odds diverge.

Scans Polymarket, Kalshi, and PredictIt for matching binary prediction markets and surfaces every cross-platform pair where buying YES on one and NO on the other locks in a risk-free profit. Wider net than a single pair — three platforms means three pairwise comparisons per scan.

Scrapes all active prediction markets from Polymarket including prices, token IDs, volume, liquidity, end dates, and categories. Optionally fetches live CLOB prices. Filter by category tag, minimum volume, or minimum liquidity. See our Arb Scanner for Polymarket/Kalshi/PredictIt arbitrage.

Prediction Market Odds API — Polymarket + Kalshi

westerly_breaker/prediction-market-odds-api

Search or look up Polymarket and Kalshi prediction markets and get one unified JSON schema back: prices, volume, liquidity, order books, and de-vigged fair probabilities (multiplicative/power method). No API key needed — built for research, arbitrage-scanning, and AI agents.