UPnDown - PolyMarket Crypto Tracker

Track PolyMarket crypto prediction markets with real-time data

UPnDown - Polymarket Crypto Tracker Monitor cryptocurrency prediction markets on Polymarket directly from your browser toolbar. FEATURES: - Real-time order book display with bid/ask spreads and cumulative depth - Track Bitcoin, Ethereum, Solana, and XRP markets - Filter markets by timeframe: 5m, 15m, 1h, 4h, or daily - Time navigation controls to browse upcoming market windows - Live market volume display - Click-through to UPnDown trading terminal from any market - Dark/light theme toggle - Persistent filters and market selection across sessions - Background updates every 5 minutes via service worker SUPPORTED MARKETS: - Bitcoin (BTC) price predictions - Ethereum (ETH) price predictions - Solana (SOL) price predictions - XRP price predictions HOW IT WORKS: 1. Click the extension icon to open the popup 2. Select a market from the list on the right 3. View the live order book with bids and asks on the left 4. Use asset and timeframe filters to narrow down markets 5. Navigate between time windows with previous/next controls 6. Click a market link to open the full trading terminal Data is fetched directly from Polymarket's official API. No account required. No personal data collected. Perfect for traders who want quick access to Polymarket crypto prediction data without leaving their current tab.