curl --request GET \
  --url https://api.messari.io/metrics/v2/protocols \
  --header 'X-Messari-API-Key: <api-key>'

{
  "error": null,
  "data": {
    "data": [
      {
        "id": "1eaf063a-b8dd-4cfb-95dd-a06338565720",
        "name": "Tether",
        "slug": "tether",
        "activity": {
          "tvl24HourUsd": 189897138186.01645,
          "activeAddresses24Hour": 1060654,
          "fees24HourUsd": 14624148.950597258
        }
      },
      {
        "id": "9e46405d-d9e8-4dd3-8dc6-0cd2d81ffedc",
        "name": "Circle",
        "slug": "circle-usdc",
        "activity": {
          "tvl24HourUsd": 75331149501.26874,
          "activeAddresses24Hour": 481093,
          "fees24HourUsd": 7518154.914472456
        }
      },
      {
        "id": "675b85dc-85a1-4096-9600-212e90a56e9a",
        "name": "Aave",
        "slug": "aave",
        "activity": {
          "tvl24HourUsd": 54964415837.89591,
          "activeAddresses24Hour": 13456,
          "fees24HourUsd": 2423233.7748409403
        }
      },
      {
        "id": "8b8a7fe3-65ad-41ed-9a0c-3292d3db50e0",
        "name": "Dai",
        "slug": "dai",
        "activity": {
          "tvl24HourUsd": 16518660202.05622,
          "activeAddresses24Hour": 41266,
          "fees24HourUsd": null
        }
      },
      {
        "id": "aa76e4fd-e785-4656-ab3c-b3c133242cae",
        "name": "Spark",
        "slug": "spark-bot",
        "activity": {
          "tvl24HourUsd": 12412872654.134151,
          "activeAddresses24Hour": 58,
          "fees24HourUsd": 244397.8248833879
        }
      }
    ],
    "metadata": {
      "pageSize": 100,
      "page": 1,
      "totalRows": 208,
      "totalPages": 3
    }
  }
}