curl --request POST \
  --url https://{brand_domain}/api/v1/payments \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "amount": "500.00",
  "currency": "BDT",
  "callback_url": "https://my-store.com/webhooks/pycer",
  "redirect_url": "https://my-store.com/checkout/success",
  "cancel_url": "https://my-store.com/checkout/cancel",
  "customer_email": "customer@example.com",
  "customer_name": "John Doe",
  "customer_phone": "+8801700000000",
  "reference": "INV-10029",
  "gateway": "bkash-merchant",
  "metadata": {
    "store_id": "dhaka-branch",
    "item_categories": [
      "electronics",
      "peripherals"
    ]
  }
}
'

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://{brand_domain}/api/v1/payments",
  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' => '500.00',
    'currency' => 'BDT',
    'callback_url' => 'https://my-store.com/webhooks/pycer',
    'redirect_url' => 'https://my-store.com/checkout/success',
    'cancel_url' => 'https://my-store.com/checkout/cancel',
    'customer_email' => 'customer@example.com',
    'customer_name' => 'John Doe',
    'customer_phone' => '+8801700000000',
    'reference' => 'INV-10029',
    'gateway' => 'bkash-merchant',
    'metadata' => [
        'store_id' => 'dhaka-branch',
        'item_categories' => [
                'electronics',
                'peripherals'
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

import requests

url = "https://{brand_domain}/api/v1/payments"

payload = {
    "amount": "500.00",
    "currency": "BDT",
    "callback_url": "https://my-store.com/webhooks/pycer",
    "redirect_url": "https://my-store.com/checkout/success",
    "cancel_url": "https://my-store.com/checkout/cancel",
    "customer_email": "customer@example.com",
    "customer_name": "John Doe",
    "customer_phone": "+8801700000000",
    "reference": "INV-10029",
    "gateway": "bkash-merchant",
    "metadata": {
        "store_id": "dhaka-branch",
        "item_categories": ["electronics", "peripherals"]
    }
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    amount: '500.00',
    currency: 'BDT',
    callback_url: 'https://my-store.com/webhooks/pycer',
    redirect_url: 'https://my-store.com/checkout/success',
    cancel_url: 'https://my-store.com/checkout/cancel',
    customer_email: 'customer@example.com',
    customer_name: 'John Doe',
    customer_phone: '+8801700000000',
    reference: 'INV-10029',
    gateway: 'bkash-merchant',
    metadata: {store_id: 'dhaka-branch', item_categories: ['electronics', 'peripherals']}
  })
};

fetch('https://{brand_domain}/api/v1/payments', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://{brand_domain}/api/v1/payments"

	payload := strings.NewReader("{\n  \"amount\": \"500.00\",\n  \"currency\": \"BDT\",\n  \"callback_url\": \"https://my-store.com/webhooks/pycer\",\n  \"redirect_url\": \"https://my-store.com/checkout/success\",\n  \"cancel_url\": \"https://my-store.com/checkout/cancel\",\n  \"customer_email\": \"customer@example.com\",\n  \"customer_name\": \"John Doe\",\n  \"customer_phone\": \"+8801700000000\",\n  \"reference\": \"INV-10029\",\n  \"gateway\": \"bkash-merchant\",\n  \"metadata\": {\n    \"store_id\": \"dhaka-branch\",\n    \"item_categories\": [\n      \"electronics\",\n      \"peripherals\"\n    ]\n  }\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	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://{brand_domain}/api/v1/payments")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"amount\": \"500.00\",\n  \"currency\": \"BDT\",\n  \"callback_url\": \"https://my-store.com/webhooks/pycer\",\n  \"redirect_url\": \"https://my-store.com/checkout/success\",\n  \"cancel_url\": \"https://my-store.com/checkout/cancel\",\n  \"customer_email\": \"customer@example.com\",\n  \"customer_name\": \"John Doe\",\n  \"customer_phone\": \"+8801700000000\",\n  \"reference\": \"INV-10029\",\n  \"gateway\": \"bkash-merchant\",\n  \"metadata\": {\n    \"store_id\": \"dhaka-branch\",\n    \"item_categories\": [\n      \"electronics\",\n      \"peripherals\"\n    ]\n  }\n}")
  .asString();

const url = 'https://{brand_domain}/api/v1/payments';
const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    amount: '500.00',
    currency: 'BDT',
    callback_url: 'https://my-store.com/webhooks/pycer',
    redirect_url: 'https://my-store.com/checkout/success',
    cancel_url: 'https://my-store.com/checkout/cancel',
    customer_email: 'customer@example.com',
    customer_name: 'John Doe',
    customer_phone: '+8801700000000',
    reference: 'INV-10029',
    gateway: 'bkash-merchant',
    metadata: {store_id: 'dhaka-branch', item_categories: ['electronics', 'peripherals']}
  })
};

fetch(url, options)
  .then(res => res.json())
  .then(json => console.log(json))
  .catch(err => console.error(err));

{
  "success": true,
  "data": {
    "payment_id": "a810b445-564a-4e20-80a5-f1261d7b328a",
    "token": "tok_4821a8f902bd3f46",
    "checkout_url": "https://pycer.quantivogroup.com/checkout/tok_4821a8f902bd3f46",
    "status": "created"
  }
}

{
  "success": false,
  "error": "amount must be a positive number",
  "errors": [
    {
      "code": "INVALID_AMOUNT",
      "message": "amount must be a positive number",
      "field": "amount"
    }
  ],
  "request_id": "8f5a2e9b0c7d4e5f"
}

{
  "success": false,
  "error": "Payment not found",
  "errors": [
    {
      "code": "PAYMENT_NOT_FOUND",
      "message": "Payment not found",
      "field": null
    }
  ],
  "request_id": "8f5a2e9b0c7d4e5f"
}