MarketMaster

Live edge terminal for Kalshi and Polymarket. Scans thousands of markets continuously, models a fair value for each one, and ranks the mispriced ones by expected value with quarter-Kelly position sizing. Before a cross-venue pair is labelled arbitrage, an automated verifier confirms both legs resolve on identical criteria; genuinely ambiguous pairs are withheld rather than shown as risk-free. Opportunities are priced off live ask prices using each venue's exact fee curve rather than midpoints, and ranked by annualised return instead of raw spread. The scanner, the analyzer, the trade journal and the smart-money whale feed are free with no card. Pro ($12.99/mo) adds the cross-venue arbitrage feed, alerts within minutes and unlimited watchlists. A separate data API runs from free to 1,000,000 requests a month, with Python and JavaScript SDKs, WebSocket streaming and an MCP server. Read-only by design: it cannot place trades or move funds. Not financial advice.