curl --request POST \
  --url https://crypto.westminister.tech/api/v1/mpesa/c2b/validation \
  --header 'Content-Type: application/json' \
  --data '
{
  "TransactionType": "Pay Bill",
  "TransID": "QGH12345678",
  "TransTime": "20260601120000",
  "TransAmount": "5000.00",
  "BusinessShortCode": "174379",
  "BillRefNumber": "MERCHANT-ACME-001",
  "MSISDN": "254712345678",
  "FirstName": "John",
  "LastName": "Doe"
}
'

import requests

url = "https://crypto.westminister.tech/api/v1/mpesa/c2b/validation"

payload = {
    "TransactionType": "Pay Bill",
    "TransID": "QGH12345678",
    "TransTime": "20260601120000",
    "TransAmount": "5000.00",
    "BusinessShortCode": "174379",
    "BillRefNumber": "MERCHANT-ACME-001",
    "MSISDN": "254712345678",
    "FirstName": "John",
    "LastName": "Doe"
}
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({
    TransactionType: 'Pay Bill',
    TransID: 'QGH12345678',
    TransTime: '20260601120000',
    TransAmount: '5000.00',
    BusinessShortCode: '174379',
    BillRefNumber: 'MERCHANT-ACME-001',
    MSISDN: '254712345678',
    FirstName: 'John',
    LastName: 'Doe'
  })
};

fetch('https://crypto.westminister.tech/api/v1/mpesa/c2b/validation', 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://crypto.westminister.tech/api/v1/mpesa/c2b/validation",
  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([
    'TransactionType' => 'Pay Bill',
    'TransID' => 'QGH12345678',
    'TransTime' => '20260601120000',
    'TransAmount' => '5000.00',
    'BusinessShortCode' => '174379',
    'BillRefNumber' => 'MERCHANT-ACME-001',
    'MSISDN' => '254712345678',
    'FirstName' => 'John',
    'LastName' => 'Doe'
  ]),
  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://crypto.westminister.tech/api/v1/mpesa/c2b/validation"

	payload := strings.NewReader("{\n  \"TransactionType\": \"Pay Bill\",\n  \"TransID\": \"QGH12345678\",\n  \"TransTime\": \"20260601120000\",\n  \"TransAmount\": \"5000.00\",\n  \"BusinessShortCode\": \"174379\",\n  \"BillRefNumber\": \"MERCHANT-ACME-001\",\n  \"MSISDN\": \"254712345678\",\n  \"FirstName\": \"John\",\n  \"LastName\": \"Doe\"\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://crypto.westminister.tech/api/v1/mpesa/c2b/validation")
  .header("Content-Type", "application/json")
  .body("{\n  \"TransactionType\": \"Pay Bill\",\n  \"TransID\": \"QGH12345678\",\n  \"TransTime\": \"20260601120000\",\n  \"TransAmount\": \"5000.00\",\n  \"BusinessShortCode\": \"174379\",\n  \"BillRefNumber\": \"MERCHANT-ACME-001\",\n  \"MSISDN\": \"254712345678\",\n  \"FirstName\": \"John\",\n  \"LastName\": \"Doe\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://crypto.westminister.tech/api/v1/mpesa/c2b/validation")

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  \"TransactionType\": \"Pay Bill\",\n  \"TransID\": \"QGH12345678\",\n  \"TransTime\": \"20260601120000\",\n  \"TransAmount\": \"5000.00\",\n  \"BusinessShortCode\": \"174379\",\n  \"BillRefNumber\": \"MERCHANT-ACME-001\",\n  \"MSISDN\": \"254712345678\",\n  \"FirstName\": \"John\",\n  \"LastName\": \"Doe\"\n}"

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