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REST APICrypto

Kraken Spot REST API — OHLC & Ticker (Public Market Data)

Kraken Spot REST API — OHLC & Ticker (Public Market Data) is a rest api from Kraken (Payward, Inc.) providing crypto data. Kraken's public Spot REST market-data endpoints serve OHLC candles and ticker snapshots for BTC, ETH and hundreds of altcoin pairs with no authentication. A Polymarket bot uses it as a polling fallback to fetch the latest committed candles and last-trade/bid/ask snapshots — useful when reconnecting websockets or backfilling bars for indicators behind "will BTC close above $X" hourly/daily markets.

At a glance

ProviderKraken (Payward, Inc.)
TypeREST API
CategoryCrypto
Real-timeNo — request/response
AuthNone — open endpoint
PricingFree — public market-data endpoints require no API key or fee — Public market data (OHLC, Ticker, Depth, Trades): free, no auth required, Rate limits scale by verification tier (Starter/Intermediate/Pro) for authenticated keys, Free downloadable historical OHLCVT data archive available separately, No paid tier required for spot market-data polling

What data it provides

  • OHLC candles: timestamp, open, high, low, close, VWAP, volume, trade count per bar
  • Candle intervals: 1, 5, 15, 30, 60, 240, 1440, 10080, 21600 minutes
  • Ticker: ask, bid, last-trade price/volume, 24h volume, VWAP, today/24h high-low, open
  • Coverage: BTC (XBT), ETH and hundreds of crypto spot pairs (plus tokenized assets/forex via asset_class)
  • OHLC 'last' field for incremental polling of newly committed candles

Features

  • No authentication needed for public OHLC/Ticker endpoints (security: [])
  • Rate limited by IP + currency pair for OHLC/Trades; ~1 request/sec stays within limits
  • OHLC returns up to 720 most-recent entries; older data not retrievable via 'since'
  • Ticker covers all tradeable pairs in one call when pair param omitted
  • REST, WebSocket and FIX 4.4 interfaces; community SDKs in Python/JS/Go
  • Counter-based rate limiter that decays per verification tier for keyed calls

Links

Use it in a bot

Other crypto data sources

Listed, not endorsed. Pricing and capabilities change without notice — check the provider's own documentation before you depend on anything here. Browse the full data resources directory or the strategy database.
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