Kraken Ticker Envelope Structure

{
  "$schema": "https://json-structure.org/json-structure/v0/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/kraken/refs/heads/main/json-structure/kraken-ticker-envelope-structure.json",
  "name": "TickerEnvelope",
  "type": "object",
  "description": "TickerEnvelope schema from Kraken Spot WebSocket API v2",
  "properties": {
    "channel": {
      "type": "string",
      "enum": [
        "ticker"
      ],
      "examples": [
        "ticker"
      ]
    },
    "type": {
      "type": "string",
      "enum": [
        "snapshot",
        "update"
      ],
      "examples": [
        "snapshot"
      ]
    },
    "data": {
      "type": "array",
      "items": {
        "type": "object",
        "name": "Inline",
        "properties": {
          "symbol": {
            "type": "string",
            "examples": [
              "PI_XBTUSD"
            ]
          },
          "bid": {
            "type": "double",
            "description": "Best bid price.",
            "examples": [
              "OQCLML-BW3P3-BUCMWZ"
            ]
          },
          "bid_qty": {
            "type": "double",
            "description": "Quantity at best bid.",
            "examples": [
              0.01
            ]
          },
          "ask": {
            "type": "double",
            "description": "Best ask price.",
            "examples": [
              0.01
            ]
          },
          "ask_qty": {
            "type": "double",
            "description": "Quantity at best ask.",
            "examples": [
              0.01
            ]
          },
          "last": {
            "type": "double",
            "description": "Last traded price.",
            "examples": [
              0.01
            ]
          },
          "volume": {
            "type": "double",
            "description": "24-hour volume in the base currency.",
            "examples": [
              "0.01"
            ]
          },
          "vwap": {
            "type": "double",
            "description": "24-hour volume weighted average price.",
            "examples": [
              0.01
            ]
          },
          "low": {
            "type": "double",
            "description": "24-hour low price.",
            "examples": [
              0.01
            ]
          },
          "high": {
            "type": "double",
            "description": "24-hour high price.",
            "examples": [
              0.01
            ]
          },
          "change": {
            "type": "double",
            "description": "24-hour absolute price change.",
            "examples": [
              0.01
            ]
          },
          "change_pct": {
            "type": "double",
            "description": "24-hour percentage price change.",
            "examples": [
              0.01
            ]
          }
        }
      },
      "examples": [
        []
      ]
    }
  }
}