curl --request GET \
  --url https://iris-api-sandbox.circle.com/v2/publicKeys

import requests

url = "https://iris-api-sandbox.circle.com/v2/publicKeys"

response = requests.get(url)

print(response.text)

const options = {method: 'GET'};

fetch('https://iris-api-sandbox.circle.com/v2/publicKeys', 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://iris-api-sandbox.circle.com/v2/publicKeys",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
]);

$response = curl_exec($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://iris-api-sandbox.circle.com/v2/publicKeys"

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

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://iris-api-sandbox.circle.com/v2/publicKeys")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://iris-api-sandbox.circle.com/v2/publicKeys")

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

request = Net::HTTP::Get.new(url)

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

{
  "publicKeys": [
    {
      "publicKey": "0x04fc192351b97838713efbc63351e3b71607cc7fc0a74fadaa12d39a693713529bf392c0eeaff62eff2f06b47a4c7cd5f83159e4145444f817d5e7f24e256c6278",
      "cctpVersion": 1
    }
  ]
}

{
  "code": 400,
  "message": "Bad request."
}