curl --request POST \
  --url https://sandbox.users.niobi.co/api/stk-deposit \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "amount": "integer",
  "country_id": "integer",
  "correspondent": "MTN_MOMO_NGA",
  "currency": "string",
  "mobile": "254647647649",
  "callback_url": "string"
}
'

import requests

url = "https://sandbox.users.niobi.co/api/stk-deposit"

payload = {
    "amount": "integer",
    "country_id": "integer",
    "correspondent": "MTN_MOMO_NGA",
    "currency": "string",
    "mobile": "254647647649",
    "callback_url": "string"
}
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    amount: 'integer',
    country_id: 'integer',
    correspondent: 'MTN_MOMO_NGA',
    currency: 'string',
    mobile: '254647647649',
    callback_url: 'string'
  })
};

fetch('https://sandbox.users.niobi.co/api/stk-deposit', 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.users.niobi.co/api/stk-deposit",
  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' => 'integer',
    'country_id' => 'integer',
    'correspondent' => 'MTN_MOMO_NGA',
    'currency' => 'string',
    'mobile' => '254647647649',
    'callback_url' => 'string'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <api-key>",
    "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://sandbox.users.niobi.co/api/stk-deposit"

	payload := strings.NewReader("{\n  \"amount\": \"integer\",\n  \"country_id\": \"integer\",\n  \"correspondent\": \"MTN_MOMO_NGA\",\n  \"currency\": \"string\",\n  \"mobile\": \"254647647649\",\n  \"callback_url\": \"string\"\n}")

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

	req.Header.Add("Authorization", "<api-key>")
	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://sandbox.users.niobi.co/api/stk-deposit")
  .header("Authorization", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"amount\": \"integer\",\n  \"country_id\": \"integer\",\n  \"correspondent\": \"MTN_MOMO_NGA\",\n  \"currency\": \"string\",\n  \"mobile\": \"254647647649\",\n  \"callback_url\": \"string\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://sandbox.users.niobi.co/api/stk-deposit")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"amount\": \"integer\",\n  \"country_id\": \"integer\",\n  \"correspondent\": \"MTN_MOMO_NGA\",\n  \"currency\": \"string\",\n  \"mobile\": \"254647647649\",\n  \"callback_url\": \"string\"\n}"

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

{
  "success": "true",
  "message": "Verification token was sent to your mobile number. Kindly verify to proceed with payment",
  "data": {
    "MerchantRequestID": "1234-123456789-1",
    "CheckoutRequestID": "ab_XY_*******************",
    "ResponseCode": "0",
    "ResponseDescription": "Success. Request accepted for processing",
    "CustomerMessage": "Success. Request accepted for processing"
  }
}