curl --request GET \
  --url https://api.messari.io/metrics/v1/exchanges/metrics \
  --header 'X-Messari-API-Key: <api-key>'

{
  "error": null,
  "data": {
    "datasets": [
      {
        "slug": "futures-open-interest",
        "granularities": [
          "1d",
          "1h"
        ],
        "metrics": [
          {
            "name": "Timestamp",
            "slug": "time",
            "description": "Timestamp of the data point.",
            "is_timestamp": true
          },
          {
            "name": "Open Interest",
            "slug": "open-interest",
            "description": "The open interest for the exchange",
            "is_timestamp": false
          }
        ]
      },
      {
        "slug": "futures-volume",
        "granularities": [
          "1d",
          "1h"
        ],
        "metrics": [
          {
            "name": "Timestamp",
            "slug": "time",
            "description": "Timestamp of the data point.",
            "is_timestamp": true
          },
          {
            "name": "Futures Trade Count",
            "slug": "trade-count",
            "description": "The number of trades on the exchange across all assets",
            "is_timestamp": false
          },
          {
            "name": "Futures Volume (USD)",
            "slug": "volume-usd",
            "description": "The volume of the exchange across all assets in USD",
            "is_timestamp": false
          },
          {
            "name": "Futures Volume Buy (USD)",
            "slug": "volume-buy-usd",
            "description": "The volume of the exchange across all assets in USD for buy trades",
            "is_timestamp": false
          },
          {
            "name": "Futures Volume Sell (USD)",
            "slug": "volume-sell-usd",
            "description": "The volume of the exchange across all assets in USD for sell trades",
            "is_timestamp": false
          }
        ]
      },
      {
        "slug": "volume",
        "granularities": [
          "1d",
          "1h"
        ],
        "metrics": [
          {
            "name": "Timestamp",
            "slug": "time",
            "description": "Timestamp of the data point.",
            "is_timestamp": true
          },
          {
            "name": "Trade Count",
            "slug": "trade-count",
            "description": "Trade count during the candle.",
            "is_timestamp": false
          },
          {
            "name": "Volume",
            "slug": "volume",
            "description": "Volume traded during candle.",
            "is_timestamp": false
          }
        ]
      }
    ]
  }
}