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L1 Book

Best bid and ask (top of book), sent as periodic snapshots.

{"method": "subscribe", "subscription": {"type": "l1Book", "coin": "BTC"}}

The interval field is optional (default "500ms"). Valid values: "200ms", "500ms", "1s".

Data format: L1BookData

{"channel": "l1Book", "data": {"coin": "BTC", "time": 1699900000000, "bid": {"px": "65000.0", "sz": "1.5", "n": 3}, "ask": {"px": "65001.0", "sz": "1.0", "n": 2}}}