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# coinbase-ws

Coinbase Exchange public WebSocket (wss://ws-feed.exchange.coinbase.com), ticker + heartbeat channels.

  • Type: WEBSOCKET · Rights: PUBLIC_ATTRIBUTED · Real-time: REALTIME (exchange timestamps)
  • Instruments: 17 USD pairs + BTC/ETH in USDT and EUR (one multiplexed connection).
  • Fields: LAST_PRICE, OPEN/HIGH/LOW (24 h), BID, ASK, BID_SIZE, ASK_SIZE, VOLUME (24 h).
  • Reconnect: managed by the SDK (jittered backoff, stale after 90 s without frames, ping every 20 s).
  • Quirks: open_24h/high_24h/low_24h are rolling 24 h statistics, not session values; the sequence number is per product.
  • Fixtures: fixtures/ticker.json, fixtures/malformed.json.