curl --request POST \
  --url https://nxt-ulm-pdt.m1amdocs.io/oidc/devicecode

import requests

url = "https://nxt-ulm-pdt.m1amdocs.io/oidc/devicecode"

response = requests.post(url)

print(response.text)

const options = {method: 'POST'};

fetch('https://nxt-ulm-pdt.m1amdocs.io/oidc/devicecode', 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://nxt-ulm-pdt.m1amdocs.io/oidc/devicecode",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
]);

$response = curl_exec($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://nxt-ulm-pdt.m1amdocs.io/oidc/devicecode"

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

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://nxt-ulm-pdt.m1amdocs.io/oidc/devicecode")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://nxt-ulm-pdt.m1amdocs.io/oidc/devicecode")

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

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

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

{
  "device_code": "b8152b4e-941a-47e5-b1c3-3a84b597b057",
  "user_code": "VV75TT",
  "verification_uri": "https://some.telco.io/oidc/device",
  "verification_uri_complete": "<string>",
  "expires_in": 300,
  "interval": 10,
  "ulm_details": null
}

{
  "error": "invalid_client",
  "error_description": "Invalid client"
}