curl --request GET \
  --url https://api.amberdata.com/markets/derivatives/analytics/futures-perpetuals/apr-basis/constant-maturities \
  --header 'x-api-key: <api-key>'

import requests

url = "https://api.amberdata.com/markets/derivatives/analytics/futures-perpetuals/apr-basis/constant-maturities"

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/apr-basis/constant-maturities', 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/apr-basis/constant-maturities",
  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/apr-basis/constant-maturities"

	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/apr-basis/constant-maturities")
  .header("x-api-key", "<api-key>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.amberdata.com/markets/derivatives/analytics/futures-perpetuals/apr-basis/constant-maturities")

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": [
      {
        "timestamp": "1704067200000",
        "symbol": "bybit_BTC-USDC",
        "basisUSD": 293.8,
        "apr": 36.11
      },
      {
        "timestamp": "1704067200000",
        "symbol": "deribit_BTC-USD",
        "basisUSD": 296,
        "apr": 36.38
      },
      {
        "timestamp": "1704067200000",
        "symbol": "huobi_BTC-USD",
        "basisUSD": 283.9,
        "apr": 34.89
      },
      {
        "timestamp": "1704067200000",
        "symbol": "okex_BTC-USD",
        "basisUSD": 297.3,
        "apr": 36.54
      },
      {
        "timestamp": "1704067200000",
        "symbol": "okex_BTC-USDC",
        "basisUSD": 287,
        "apr": 35.28
      },
      {
        "timestamp": "1704067200000",
        "symbol": "okex_BTC-USDT",
        "basisUSD": 290.3,
        "apr": 35.68
      },
      {
        "timestamp": "1704070800000",
        "symbol": "bybit_BTC-USDC",
        "basisUSD": 300.9,
        "apr": 36.86
      },
      {
        "timestamp": "1704070800000",
        "symbol": "deribit_BTC-USD",
        "basisUSD": 301.6,
        "apr": 36.96
      },
      {
        "timestamp": "1704070800000",
        "symbol": "huobi_BTC-USD",
        "basisUSD": 280.7,
        "apr": 34.4
      },
      {
        "timestamp": "1704070800000",
        "symbol": "okex_BTC-USD",
        "basisUSD": 302.9,
        "apr": 37.12
      },
      {
        "timestamp": "1704070800000",
        "symbol": "okex_BTC-USDC",
        "basisUSD": 292.8,
        "apr": 35.88
      },
      {
        "timestamp": "1704070800000",
        "symbol": "okex_BTC-USDT",
        "basisUSD": 298.3,
        "apr": 36.55
      },
      {
        "timestamp": "1704074400000",
        "symbol": "bybit_BTC-USDC",
        "basisUSD": 306.6,
        "apr": 37.57
      },
      {
        "timestamp": "1704074400000",
        "symbol": "deribit_BTC-USD",
        "basisUSD": 305.6,
        "apr": 37.44
      },
      {
        "timestamp": "1704074400000",
        "symbol": "huobi_BTC-USD",
        "basisUSD": 277.3,
        "apr": 33.98
      },
      {
        "timestamp": "1704074400000",
        "symbol": "okex_BTC-USD",
        "basisUSD": 311,
        "apr": 38.1
      },
      {
        "timestamp": "1704074400000",
        "symbol": "okex_BTC-USDC",
        "basisUSD": 301.3,
        "apr": 36.92
      },
      {
        "timestamp": "1704074400000",
        "symbol": "okex_BTC-USDT",
        "basisUSD": 298.3,
        "apr": 36.55
      }
    ]
  }
}

{}