curl --request POST \
  --url https://api.xpaycheckout.com/setup-method/create \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "currency": "USD",
  "billingDetails": {
    "name": "John Doe",
    "email": "john.doe@example.com",
    "contactNumber": "+919123456789",
    "customerAddress": {
      "addressLine1": "123 Main St",
      "addressLine2": "Apt 1",
      "city": "New York",
      "state": "NY",
      "country": "US",
      "postalCode": "2424"
    }
  },
  "callbackUrl": "https://example.com/callback",
  "paymentMethods": [
    "CARD",
    "GOOGLE_PAY",
    "APPLE_PAY"
  ],
  "customerId": "cus_Tfd3Jq1tZxPjYVhRQW2r3",
  "storeFrontId": "sf_sK8d3Jq1tZxPjYVhRQW2rf",
  "metadata": {
    "orderId": "12345",
    "customerNote": "Setup for recurring payments"
  },
  "phoneNumberRequired": false
}
'

import requests

url = "https://api.xpaycheckout.com/setup-method/create"

payload = {
    "currency": "USD",
    "billingDetails": {
        "name": "John Doe",
        "email": "john.doe@example.com",
        "contactNumber": "+919123456789",
        "customerAddress": {
            "addressLine1": "123 Main St",
            "addressLine2": "Apt 1",
            "city": "New York",
            "state": "NY",
            "country": "US",
            "postalCode": "2424"
        }
    },
    "callbackUrl": "https://example.com/callback",
    "paymentMethods": ["CARD", "GOOGLE_PAY", "APPLE_PAY"],
    "customerId": "cus_Tfd3Jq1tZxPjYVhRQW2r3",
    "storeFrontId": "sf_sK8d3Jq1tZxPjYVhRQW2rf",
    "metadata": {
        "orderId": "12345",
        "customerNote": "Setup for recurring payments"
    },
    "phoneNumberRequired": False
}
headers = {
    "Authorization": "Basic <encoded-value>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Basic <encoded-value>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    currency: 'USD',
    billingDetails: {
      name: 'John Doe',
      email: 'john.doe@example.com',
      contactNumber: '+919123456789',
      customerAddress: {
        addressLine1: '123 Main St',
        addressLine2: 'Apt 1',
        city: 'New York',
        state: 'NY',
        country: 'US',
        postalCode: '2424'
      }
    },
    callbackUrl: 'https://example.com/callback',
    paymentMethods: ['CARD', 'GOOGLE_PAY', 'APPLE_PAY'],
    customerId: 'cus_Tfd3Jq1tZxPjYVhRQW2r3',
    storeFrontId: 'sf_sK8d3Jq1tZxPjYVhRQW2rf',
    metadata: {orderId: '12345', customerNote: 'Setup for recurring payments'},
    phoneNumberRequired: false
  })
};

fetch('https://api.xpaycheckout.com/setup-method/create', 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.xpaycheckout.com/setup-method/create",
  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([
    'currency' => 'USD',
    'billingDetails' => [
        'name' => 'John Doe',
        'email' => 'john.doe@example.com',
        'contactNumber' => '+919123456789',
        'customerAddress' => [
                'addressLine1' => '123 Main St',
                'addressLine2' => 'Apt 1',
                'city' => 'New York',
                'state' => 'NY',
                'country' => 'US',
                'postalCode' => '2424'
        ]
    ],
    'callbackUrl' => 'https://example.com/callback',
    'paymentMethods' => [
        'CARD',
        'GOOGLE_PAY',
        'APPLE_PAY'
    ],
    'customerId' => 'cus_Tfd3Jq1tZxPjYVhRQW2r3',
    'storeFrontId' => 'sf_sK8d3Jq1tZxPjYVhRQW2rf',
    'metadata' => [
        'orderId' => '12345',
        'customerNote' => 'Setup for recurring payments'
    ],
    'phoneNumberRequired' => false
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Basic <encoded-value>",
    "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.xpaycheckout.com/setup-method/create"

	payload := strings.NewReader("{\n  \"currency\": \"USD\",\n  \"billingDetails\": {\n    \"name\": \"John Doe\",\n    \"email\": \"john.doe@example.com\",\n    \"contactNumber\": \"+919123456789\",\n    \"customerAddress\": {\n      \"addressLine1\": \"123 Main St\",\n      \"addressLine2\": \"Apt 1\",\n      \"city\": \"New York\",\n      \"state\": \"NY\",\n      \"country\": \"US\",\n      \"postalCode\": \"2424\"\n    }\n  },\n  \"callbackUrl\": \"https://example.com/callback\",\n  \"paymentMethods\": [\n    \"CARD\",\n    \"GOOGLE_PAY\",\n    \"APPLE_PAY\"\n  ],\n  \"customerId\": \"cus_Tfd3Jq1tZxPjYVhRQW2r3\",\n  \"storeFrontId\": \"sf_sK8d3Jq1tZxPjYVhRQW2rf\",\n  \"metadata\": {\n    \"orderId\": \"12345\",\n    \"customerNote\": \"Setup for recurring payments\"\n  },\n  \"phoneNumberRequired\": false\n}")

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

	req.Header.Add("Authorization", "Basic <encoded-value>")
	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.xpaycheckout.com/setup-method/create")
  .header("Authorization", "Basic <encoded-value>")
  .header("Content-Type", "application/json")
  .body("{\n  \"currency\": \"USD\",\n  \"billingDetails\": {\n    \"name\": \"John Doe\",\n    \"email\": \"john.doe@example.com\",\n    \"contactNumber\": \"+919123456789\",\n    \"customerAddress\": {\n      \"addressLine1\": \"123 Main St\",\n      \"addressLine2\": \"Apt 1\",\n      \"city\": \"New York\",\n      \"state\": \"NY\",\n      \"country\": \"US\",\n      \"postalCode\": \"2424\"\n    }\n  },\n  \"callbackUrl\": \"https://example.com/callback\",\n  \"paymentMethods\": [\n    \"CARD\",\n    \"GOOGLE_PAY\",\n    \"APPLE_PAY\"\n  ],\n  \"customerId\": \"cus_Tfd3Jq1tZxPjYVhRQW2r3\",\n  \"storeFrontId\": \"sf_sK8d3Jq1tZxPjYVhRQW2rf\",\n  \"metadata\": {\n    \"orderId\": \"12345\",\n    \"customerNote\": \"Setup for recurring payments\"\n  },\n  \"phoneNumberRequired\": false\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.xpaycheckout.com/setup-method/create")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Basic <encoded-value>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"currency\": \"USD\",\n  \"billingDetails\": {\n    \"name\": \"John Doe\",\n    \"email\": \"john.doe@example.com\",\n    \"contactNumber\": \"+919123456789\",\n    \"customerAddress\": {\n      \"addressLine1\": \"123 Main St\",\n      \"addressLine2\": \"Apt 1\",\n      \"city\": \"New York\",\n      \"state\": \"NY\",\n      \"country\": \"US\",\n      \"postalCode\": \"2424\"\n    }\n  },\n  \"callbackUrl\": \"https://example.com/callback\",\n  \"paymentMethods\": [\n    \"CARD\",\n    \"GOOGLE_PAY\",\n    \"APPLE_PAY\"\n  ],\n  \"customerId\": \"cus_Tfd3Jq1tZxPjYVhRQW2r3\",\n  \"storeFrontId\": \"sf_sK8d3Jq1tZxPjYVhRQW2rf\",\n  \"metadata\": {\n    \"orderId\": \"12345\",\n    \"customerNote\": \"Setup for recurring payments\"\n  },\n  \"phoneNumberRequired\": false\n}"

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

{
  "setupMethodId": "sm_sK8d3Jq1tZxPjYVhRQW2rf",
  "fwdUrl": "https://pay.xpaycheckout.com/setup-method?id=sm_sK8d3Jq1tZxPjYVhRQW2rf&secret=4b5PyxKSOuunnnFruohoiF"
}

{
  "errorCode": "bad_request",
  "errorDescription": "Failed to read request"
}