curl --request POST \
  --url https://cloudapi.mailercloud.com/v1/segment/search \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "limit": 10,
  "page": 1
}
'

import requests

url = "https://cloudapi.mailercloud.com/v1/segment/search"

payload = {
    "limit": 10,
    "page": 1
}
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({limit: 10, page: 1})
};

fetch('https://cloudapi.mailercloud.com/v1/segment/search', 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://cloudapi.mailercloud.com/v1/segment/search",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'limit' => 10,
    'page' => 1
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <api-key>",
    "Content-Type: application/json"
  ],
]);

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

curl_close($curl);

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

package main

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

func main() {

	url := "https://cloudapi.mailercloud.com/v1/segment/search"

	payload := strings.NewReader("{\n  \"limit\": 10,\n  \"page\": 1\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

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

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

	fmt.Println(string(body))

}

{
  "count": 2,
  "data": [
    {
      "active_count": 8690337,
      "id": "KyGa",
      "list": "Default List,Sending list,sending list 2,Auto Test 3,Auto Test 0,Auto Test 1,Auto list New,List bounce,Multy domain,lowww,List10lac1,LIST10lac2,List10lac3,List10lac4,List10Lac6,Fineecho copy paste,List auto test -1,List auto test -2,Vinmail Open,list vinmail,Tb live test-Multydomain,Api test",
      "name": "Sending list-1"
    },
    {
      "active_count": 8408779,
      "id": "Kxwf",
      "list": "Default List,Sending list,sending list 2,Auto Test 3,Auto Test 0,Auto Test 1,Auto list New,List bounce,Multy domain,lowww,List10lac1,LIST10lac2,List10lac3,List10lac4,List10Lac6,Fineecho copy paste,List auto test -1,List auto test -2,Vinmail Open",
      "name": "ryth"
    }
  ]
}

{
  "error_code": 123,
  "message": "<string>"
}