curl --request POST \
  --url https://api.superx.so/v1/contact-lists/{id}/members/bulk \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "x_user_ids": [
    "944883311",
    "44196397",
    "1234567890"
  ]
}
'

import requests

url = "https://api.superx.so/v1/contact-lists/{id}/members/bulk"

payload = { "x_user_ids": ["944883311", "44196397", "1234567890"] }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({x_user_ids: ['944883311', '44196397', '1234567890']})
};

fetch('https://api.superx.so/v1/contact-lists/{id}/members/bulk', 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.superx.so/v1/contact-lists/{id}/members/bulk",
  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([
    'x_user_ids' => [
        '944883311',
        '44196397',
        '1234567890'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "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://api.superx.so/v1/contact-lists/{id}/members/bulk"

	payload := strings.NewReader("{\n  \"x_user_ids\": [\n    \"944883311\",\n    \"44196397\",\n    \"1234567890\"\n  ]\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	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))

}

HttpResponse<String> response = Unirest.post("https://api.superx.so/v1/contact-lists/{id}/members/bulk")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"x_user_ids\": [\n    \"944883311\",\n    \"44196397\",\n    \"1234567890\"\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.superx.so/v1/contact-lists/{id}/members/bulk")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"x_user_ids\": [\n    \"944883311\",\n    \"44196397\",\n    \"1234567890\"\n  ]\n}"

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

{
  "data": {
    "added": 2,
    "duplicates": 0,
    "failed": 0,
    "not_found": [
      "1234567890"
    ],
    "total_in_list_after": 44
  }
}

{
  "error": {
    "code": "system_list_read_only",
    "message": "System lists are managed automatically and can't be edited."
  }
}

{
  "error": {
    "code": "invalid_api_key",
    "message": "Unknown or revoked API key"
  }
}

{
  "error": {
    "code": "insufficient_scope",
    "message": "This API key is read-only. Create a key with the write scope to use this endpoint."
  }
}

{
  "error": {
    "code": "list_not_found",
    "message": "No contact list with that id belongs to this account."
  }
}

{
  "error": {
    "code": "rate_limited",
    "message": "Rate limit exceeded for the Pro plan (30 requests/min). Upgrade for higher limits.",
    "retry_after": 42
  }
}

{
  "error": {
    "code": "upstream_error",
    "message": "Failed to fetch scheduled posts. Try again shortly."
  }
}

{
  "error": {
    "code": "upstream_unavailable",
    "message": "The scheduling service is temporarily unavailable. Retry with the same Idempotency-Key."
  }
}