curl --request POST \
  --url https://api.iso8583sim.com/generate \
  --header 'Content-Type: application/json' \
  --data '
{
  "amount_minor_units": 1000,
  "currency": "840",
  "description": "<string>",
  "message_type": "auth",
  "model": "<string>",
  "pan": "<string>",
  "provider": "<string>",
  "stan": "123456"
}
'

import requests

url = "https://api.iso8583sim.com/generate"

payload = {
    "amount_minor_units": 1000,
    "currency": "840",
    "description": "<string>",
    "message_type": "auth",
    "model": "<string>",
    "pan": "<string>",
    "provider": "<string>",
    "stan": "123456"
}
headers = {"Content-Type": "application/json"}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    amount_minor_units: 1000,
    currency: '840',
    description: '<string>',
    message_type: 'auth',
    model: '<string>',
    pan: '<string>',
    provider: '<string>',
    stan: '123456'
  })
};

fetch('https://api.iso8583sim.com/generate', 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.iso8583sim.com/generate",
  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([
    'amount_minor_units' => 1000,
    'currency' => '840',
    'description' => '<string>',
    'message_type' => 'auth',
    'model' => '<string>',
    'pan' => '<string>',
    'provider' => '<string>',
    'stan' => '123456'
  ]),
  CURLOPT_HTTPHEADER => [
    "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.iso8583sim.com/generate"

	payload := strings.NewReader("{\n  \"amount_minor_units\": 1000,\n  \"currency\": \"840\",\n  \"description\": \"<string>\",\n  \"message_type\": \"auth\",\n  \"model\": \"<string>\",\n  \"pan\": \"<string>\",\n  \"provider\": \"<string>\",\n  \"stan\": \"123456\"\n}")

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

	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.iso8583sim.com/generate")
  .header("Content-Type", "application/json")
  .body("{\n  \"amount_minor_units\": 1000,\n  \"currency\": \"840\",\n  \"description\": \"<string>\",\n  \"message_type\": \"auth\",\n  \"model\": \"<string>\",\n  \"pan\": \"<string>\",\n  \"provider\": \"<string>\",\n  \"stan\": \"123456\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.iso8583sim.com/generate")

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

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"amount_minor_units\": 1000,\n  \"currency\": \"840\",\n  \"description\": \"<string>\",\n  \"message_type\": \"auth\",\n  \"model\": \"<string>\",\n  \"pan\": \"<string>\",\n  \"provider\": \"<string>\",\n  \"stan\": \"123456\"\n}"

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

{
  "fields": [
    {
      "name": "<string>",
      "number": 123,
      "value": "<string>"
    }
  ],
  "message": "<string>",
  "mti": "<string>",
  "network": "VISA",
  "source": "<string>"
}

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>",
      "ctx": {},
      "input": "<unknown>"
    }
  ]
}