Instrument

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/kraken/refs/heads/main/json-schema/futures-rest-instrument-schema.json",
  "title": "Instrument",
  "description": "Instrument schema from Kraken Futures REST API",
  "type": "object",
  "properties": {
    "symbol": {
      "type": "string",
      "example": "PI_XBTUSD"
    },
    "type": {
      "type": "string",
      "enum": [
        "futures_inverse",
        "futures_vanilla",
        "flexible_futures",
        "perpetual_inverse",
        "perpetual_vanilla"
      ],
      "example": "futures_inverse"
    },
    "tradeable": {
      "type": "boolean",
      "example": true
    },
    "underlying": {
      "type": "string",
      "example": "string"
    },
    "lastTradingTime": {
      "type": "string",
      "format": "date-time",
      "example": "2026-05-30T00:00:00Z"
    },
    "tickSize": {
      "type": "number",
      "example": 0.01
    },
    "contractSize": {
      "type": "number",
      "example": 0.01
    },
    "marginLevels": {
      "type": "array",
      "items": {
        "type": "object"
      },
      "example": "0.01"
    },
    "fundingRateCoefficient": {
      "type": "number",
      "example": 0.01
    },
    "maxRelativeFundingRate": {
      "type": "number",
      "example": 0.01
    }
  }
}