curl --request POST \
  --url https://sandbox-biller-b2b.singapay.id/api/v2/prepaid/get-parameter-game-topup \
  --header 'Accept: <accept>' \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: <content-type>' \
  --header 'X-PARTNER-ID: <x-partner-id>' \
  --data '
{
  "command": "get-parameter-game-topup",
  "data": {
    "category_code": "topupg"
  }
}
'

import requests

url = "https://sandbox-biller-b2b.singapay.id/api/v2/prepaid/get-parameter-game-topup"

payload = {
    "command": "get-parameter-game-topup",
    "data": { "category_code": "topupg" }
}
headers = {
    "X-PARTNER-ID": "<x-partner-id>",
    "Accept": "<accept>",
    "Content-Type": "<content-type>",
    "Authorization": "Bearer <token>"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'X-PARTNER-ID': '<x-partner-id>',
    Accept: '<accept>',
    'Content-Type': '<content-type>',
    Authorization: 'Bearer <token>'
  },
  body: JSON.stringify({command: 'get-parameter-game-topup', data: {category_code: 'topupg'}})
};

fetch('https://sandbox-biller-b2b.singapay.id/api/v2/prepaid/get-parameter-game-topup', 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://sandbox-biller-b2b.singapay.id/api/v2/prepaid/get-parameter-game-topup",
  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([
    'command' => 'get-parameter-game-topup',
    'data' => [
        'category_code' => 'topupg'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Accept: <accept>",
    "Authorization: Bearer <token>",
    "Content-Type: <content-type>",
    "X-PARTNER-ID: <x-partner-id>"
  ],
]);

$response = curl_exec($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://sandbox-biller-b2b.singapay.id/api/v2/prepaid/get-parameter-game-topup"

	payload := strings.NewReader("{\n  \"command\": \"get-parameter-game-topup\",\n  \"data\": {\n    \"category_code\": \"topupg\"\n  }\n}")

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

	req.Header.Add("X-PARTNER-ID", "<x-partner-id>")
	req.Header.Add("Accept", "<accept>")
	req.Header.Add("Content-Type", "<content-type>")
	req.Header.Add("Authorization", "Bearer <token>")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://sandbox-biller-b2b.singapay.id/api/v2/prepaid/get-parameter-game-topup")
  .header("X-PARTNER-ID", "<x-partner-id>")
  .header("Accept", "<accept>")
  .header("Content-Type", "<content-type>")
  .header("Authorization", "Bearer <token>")
  .body("{\n  \"command\": \"get-parameter-game-topup\",\n  \"data\": {\n    \"category_code\": \"topupg\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://sandbox-biller-b2b.singapay.id/api/v2/prepaid/get-parameter-game-topup")

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

request = Net::HTTP::Post.new(url)
request["X-PARTNER-ID"] = '<x-partner-id>'
request["Accept"] = '<accept>'
request["Content-Type"] = '<content-type>'
request["Authorization"] = 'Bearer <token>'
request.body = "{\n  \"command\": \"get-parameter-game-topup\",\n  \"data\": {\n    \"category_code\": \"topupg\"\n  }\n}"

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

{
  "command": "get-parameter-game-topup",
  "response_code": "00",
  "response_text": "Operation completed successfully",
  "data": {}
}

{
  "status": 401,
  "success": false,
  "error": {
    "code": 401,
    "message": "Unauthorized merchant, please sign in"
  }
}

{
  "command": "detail-bill-transaction",
  "response_code": "04",
  "response_text": "Rejected Format Error",
  "data": {
    "data": "The data field is required.",
    "data.transaction_id": "The data.transaction id field is required."
  }
}