curl --request GET \
  --url https://api.amberdata.com/markets/derivatives/analytics/futures-perpetuals/open-interest-total \
  --header 'x-api-key: <api-key>'

import requests

url = "https://api.amberdata.com/markets/derivatives/analytics/futures-perpetuals/open-interest-total"

headers = {"x-api-key": "<api-key>"}

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

print(response.text)

const options = {method: 'GET', headers: {'x-api-key': '<api-key>'}};

fetch('https://api.amberdata.com/markets/derivatives/analytics/futures-perpetuals/open-interest-total', 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.amberdata.com/markets/derivatives/analytics/futures-perpetuals/open-interest-total",
  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-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.amberdata.com/markets/derivatives/analytics/futures-perpetuals/open-interest-total"

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

	req.Header.Add("x-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.amberdata.com/markets/derivatives/analytics/futures-perpetuals/open-interest-total")
  .header("x-api-key", "<api-key>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.amberdata.com/markets/derivatives/analytics/futures-perpetuals/open-interest-total")

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

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

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

{
  "status": 200,
  "title": "OK",
  "description": "Successful request",
  "payload": {
    "data": [
      {
        "exchange": "huobi",
        "timestamp": 1715385600000,
        "coin": 2422.5065079067244,
        "usd": 147.31088485102083
      },
      {
        "exchange": "kraken",
        "timestamp": 1715385600000,
        "coin": 3127.0053168195695,
        "usd": 190.48881954960004
      },
      {
        "exchange": "bitmex",
        "timestamp": 1715385600000,
        "coin": 6929.464631763672,
        "usd": 372.08792198369997
      },
      {
        "exchange": "deribit",
        "timestamp": 1715385600000,
        "coin": 25049.827686538036,
        "usd": 1547.513314212
      },
      {
        "exchange": "okex",
        "timestamp": 1715385600000,
        "coin": 43135.73797192597,
        "usd": 2635.6437946363894
      },
      {
        "exchange": "bybit",
        "timestamp": 1715385600000,
        "coin": 76781.5822092026,
        "usd": 4669.033820516301
      },
      {
        "exchange": "binance",
        "timestamp": 1715385600000,
        "coin": 111446.26808003098,
        "usd": 6787.6393313128
      },
      {
        "exchange": "cme",
        "timestamp": 1715385600000,
        "coin": 133229.59999999995,
        "usd": 8186.2328186800005
      },
      {
        "exchange": "huobi",
        "timestamp": 1715299200000,
        "coin": 2243.9724956417745,
        "usd": 141.33601091870173
      },
      {
        "exchange": "kraken",
        "timestamp": 1715299200000,
        "coin": 3210.220565067225,
        "usd": 203.0752266112
      },
      {
        "exchange": "bitmex",
        "timestamp": 1715299200000,
        "coin": 6749.902349060866,
        "usd": 374.4837635761
      }
    ]
  }
}

{}