BookData

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/kraken/refs/heads/main/json-schema/kraken-book-data-schema.json",
  "title": "BookData",
  "description": "BookData schema from Kraken Spot WebSocket API v2",
  "type": "object",
  "properties": {
    "symbol": {
      "type": "string",
      "example": "PI_XBTUSD"
    },
    "bids": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "price": {
            "type": "number",
            "format": "double",
            "example": "0.01"
          },
          "qty": {
            "type": "number",
            "format": "double",
            "example": 0.01
          }
        }
      },
      "example": []
    },
    "asks": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "price": {
            "type": "number",
            "format": "double",
            "example": "0.01"
          },
          "qty": {
            "type": "number",
            "format": "double",
            "example": 0.01
          }
        }
      },
      "example": []
    },
    "checksum": {
      "type": "integer",
      "format": "int64",
      "description": "CRC32 checksum of the top 10 bids and asks.",
      "example": 1
    },
    "timestamp": {
      "type": "string",
      "format": "date-time",
      "example": "2026-05-30T00:00:00Z"
    }
  }
}