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

import requests

url = "https://api.messari.io/metrics/v2/protocols/lending"

headers = {"X-Messari-API-Key": "<api-key>"}

response = requests.get(url, headers=headers)

print(response.text)

const options = {method: 'GET', headers: {'X-Messari-API-Key': '<api-key>'}};

fetch('https://api.messari.io/metrics/v2/protocols/lending', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.messari.io/metrics/v2/protocols/lending",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "X-Messari-API-Key: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.messari.io/metrics/v2/protocols/lending"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("X-Messari-API-Key", "<api-key>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://api.messari.io/metrics/v2/protocols/lending")
  .header("X-Messari-API-Key", "<api-key>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.messari.io/metrics/v2/protocols/lending")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["X-Messari-API-Key"] = '<api-key>'

response = http.request(request)
puts response.read_body

{
  "error": null,
  "data": {
    "data": [
      {
        "id": "675b85dc-85a1-4096-9600-212e90a56e9a",
        "name": "Aave",
        "slug": "aave",
        "activity": {
          "tvl24HourUsd": 54964415837.89591,
          "activeAddresses24Hour": 13456,
          "fees24HourUsd": 2423233.7748409403
        },
        "lending": {
          "feesSupplySide24HourUsd": 2071008.5197647174,
          "tokenIncentives24HourUsd": 240691.80134054483,
          "expenses24HourUsd": 240691.80134054483,
          "netDeposits24HourUsd": 54964415837.89591,
          "treasuryUsd": 245181554.73247993,
          "borrowedUsd": 23493351926.05168
        }
      },
      {
        "id": "ed659e93-6de9-4c95-8e9c-4ae0e3889826",
        "name": "Maple Finance (legacy)",
        "slug": "maple-finance",
        "activity": {
          "tvl24HourUsd": 4515305425.587565,
          "activeAddresses24Hour": 2,
          "fees24HourUsd": 143749.98534941123
        },
        "lending": {
          "feesSupplySide24HourUsd": 118950.12572331856,
          "tokenIncentives24HourUsd": 0,
          "expenses24HourUsd": 0,
          "netDeposits24HourUsd": 4515305425.587565,
          "treasuryUsd": 8487684.103209546,
          "borrowedUsd": 2100874542.7428308
        }
      },
      {
        "id": "21ef8a1b-7b6d-47a8-ac7e-b3c1aac3905b",
        "name": "Fluid",
        "slug": "fluid-instadapp",
        "activity": {
          "tvl24HourUsd": 4053614898.6617727,
          "activeAddresses24Hour": 184,
          "fees24HourUsd": 227570.19051174168
        },
        "lending": {
          "feesSupplySide24HourUsd": 184091.30714850308,
          "tokenIncentives24HourUsd": 0,
          "expenses24HourUsd": 0,
          "netDeposits24HourUsd": 4053614898.6617727,
          "treasuryUsd": 115754943.82956968,
          "borrowedUsd": 1780841727.5860696
        }
      },
      {
        "id": "b4a4024c-14c1-4e90-b092-b27cb58b7521",
        "name": "Compound",
        "slug": "compound",
        "activity": {
          "tvl24HourUsd": 3284034102.8126397,
          "activeAddresses24Hour": 1322,
          "fees24HourUsd": 143699.55830551684
        },
        "lending": {
          "feesSupplySide24HourUsd": 130199.90808079128,
          "tokenIncentives24HourUsd": 16347.910628502446,
          "expenses24HourUsd": 16347.910628502446,
          "netDeposits24HourUsd": 3284034102.8126397,
          "treasuryUsd": 21190999.23328768,
          "borrowedUsd": 1145849358.8257718
        }
      },
      {
        "id": "4bb0dcdd-75ae-4b34-92fc-64400dcdff8e",
        "name": "Euler Finance",
        "slug": "euler-finance",
        "activity": {
          "tvl24HourUsd": 2257895569.976147,
          "activeAddresses24Hour": 1085,
          "fees24HourUsd": 209944.9364837526
        },
        "lending": {
          "feesSupplySide24HourUsd": 185040.6848534592,
          "tokenIncentives24HourUsd": null,
          "expenses24HourUsd": null,
          "netDeposits24HourUsd": 2257895569.976147,
          "treasuryUsd": 26604687.240410868,
          "borrowedUsd": 1256452527.5359335
        }
      }
    ],
    "metadata": {
      "pageSize": 100,
      "page": 1,
      "totalRows": 13,
      "totalPages": 1
    }
  }
}

{
  "data": "<unknown>",
  "error": "<string>"
}

{
  "data": "<unknown>",
  "error": "<string>"
}

{
  "data": "<unknown>",
  "error": "<string>"
}