Kraken API Unlocked — the market data feeds systematic traders use on Kraken

Kraken’s blog explains which real-time and historical market data feeds systematic crypto traders should use and why feed choice matters for market impact and strategy validity. It recommends picking 2–3 feeds (ticker, OHLCV, order book, trades, funding rates) tailored to the strategy: execution algos typically rely on L2 order-book depth (depth 10 common) to limit slippage, backtests use OHLCV plus trade history to validate fills, and carry strategies need current and historical funding rates plus mark/index price monitoring to manage basis and liquidation risk. L3 gives full order-by-order visibility (higher payload, requires authentication) and is mainly for sub-second/queue-position work. Use WebSocket for real-time candle updates and REST for historical/backtesting. The post warns against over-subscribing feeds and short backtest windows, and emphasizes that feed selection affects execution cost, slippage, and liquidation exposure.