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Spot
Order management, account data, market data, funding, and Earn on Kraken’s Spot trading engine.Spot REST
Account, trading, funding, and Earn. Public and private endpoints over HTTPS.
Spot WebSocket
Real-time market data and order entry. v2 recommended; v1 maintained.
Spot FIX
Lowest-latency order entry via Unified FIX 4.4.
Derivatives
Perpetuals and dated contracts on BTC, ETH, and more.Derivatives REST
Order entry, account, positions, fills, and historical data.
Derivatives WebSocket
Streaming-only market data and account updates.
Derivatives FIX
Order entry via Unified FIX 4.4 — same session as Spot FIX.
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Side-by-side feature, latency, and sequencing comparison.
Authentication
HMAC-SHA512 signing for REST and WebSocket private endpoints.
Rate limits
Limits across REST, WebSocket, and FIX.
Errors
Common errors and how to resolve them.