Free developer tools, data analytics, and research.
Build, test, and understand cron schedules with human-readable descriptions and next 10 run times.
Format, validate, and explore JSON with syntax highlighting, tree view, and stats.
Encode text or files to Base64, decode Base64 to text. Drag-and-drop file support.
Convert Unix timestamps to dates and back. Live clock, multiple format outputs.
68% win rate, negative P&L. Why accuracy alone doesn't work in prediction markets — and the narrow price band where our model actually profits.
Risk Management21,000 forecast data points, 3 cities, 1 week. NOAA averages 1.3°F error — but Miami runs warm, and the tails are where models break.
Weather ForecastingOur backtest showed 0% accuracy on high-edge contracts. The data was lying — we were measuring trades that couldn't actually happen. How phantom liquidity distorts prediction market strategy.
Prediction MarketsNOAA forecasts, Kalshi prediction markets, and the surprising accuracy of free weather data. What happens when you pit a model against the crowd.
Prediction Markets