Binance Perpetual Funding Rate & Open Interest Snapshot

{
  "type": "object",
  "required": [
    "pair",
    "fields",
    "exchange"
  ],
  "properties": {
    "pair": {
      "type": "string",
      "minLength": 1,
      "description": "The trading pair as BASE/QUOTE, written without a settlement suffix."
    },
    "fields": {
      "enum": [
        "funding,oi",
        "funding"
      ],
      "type": "string",
      "description": "What to include: funding,oi for funding plus open interest, or funding for funding only."
    },
    "exchange": {
      "enum": [
        "binance"
      ],
      "type": "string",
      "description": "The exchange; only binance is offered."
    }
  },
  "additionalProperties": false
}

{
  "type": "object",
  "properties": {
    "data": {
      "type": "object",
      "properties": {
        "pair": {
          "type": "string",
          "description": "The trading pair."
        },
        "funding": {
          "type": "object",
          "properties": {
            "interval": {
              "type": "string",
              "description": "Funding interval, e.g. 8h."
            },
            "mark_price": {
              "type": "number",
              "description": "Current mark price."
            },
            "index_price": {
              "type": "number",
              "description": "Current index price."
            },
            "funding_rate": {
              "type": "number",
              "description": "Funding rate for the current interval, as a fraction (not percent)."
            },
            "next_funding": {
              "type": "string",
              "description": "Time of the next funding payment (ISO 8601)."
            },
            "funding_rate_1h": {
              "type": "number",
              "description": "The funding rate scaled to 1 hour."
            },
            "funding_rate_8h": {
              "type": "number",
              "description": "The funding rate scaled to 8 hours."
            },
            "funding_interval_hours": {
              "type": "number",
              "description": "Funding interval length in hours."
            },
            "funding_rate_annualized": {
              "type": "number",
              "description": "The funding rate scaled to a year, as a fraction."
            }
          },
          "description": "The current funding state."
        },
        "exchange": {
          "type": "string",
          "description": "The exchange."
        },
        "open_interest": {
          "type": [
            "object",
            "null"
          ],
          "properties": {
            "timestamp": {
              "type": "number",
              "description": "When the open interest was read, in Unix seconds."
            },
            "open_interest_usd": {
              "type": "number",
              "description": "Open interest in US dollars."
            },
            "open_interest_amount": {
              "type": "number",
              "description": "Open interest in the base asset."
            }
          },
          "description": "Open interest; present only when fields includes oi."
        }
      }
    }
  },
  "description": "The perpetual-futures snapshot."
}