I Built 0xInsider.com — a Whale Trade Tracker for Predict...

0xInsider is a real-time terminal that tracks large trades across Polymarket and Kalshi prediction markets. For Polymarket trades, it displays trader history including win rate, P&L, and performance grades since transactions are on-chain. Kalshi trades show size and direction but remain anonymous due to CFTC regulations. The tool uses server-sent events to stream trades instantly, helping traders spot whale activity, identify conviction signals, and detect pricing differences between platforms.