curl --request POST \
  --url https://api.paycashless.com/v1/invoices \
  --header 'Content-Type: application/json' \
  --header 'Request-Signature: <request-signature>' \
  --header 'Request-Timestamp: <request-timestamp>' \
  --data '
{
  "reference": "<string>",
  "description": "<string>",
  "customer": {
    "email": "[email protected]",
    "name": "<string>",
    "address": "<string>"
  },
  "items": [
    {
      "name": "<string>",
      "quantity": 123,
      "description": "<string>",
      "price": 100000
    }
  ],
  "daysUntilDue": 30,
  "acceptPartialPayments": false,
  "sendEmail": false,
  "autoFinalize": true,
  "callbackUrl": "https://example.com/callback",
  "returnUrl": "https://example.com/return",
  "taxRateIds": [
    "txr_1"
  ],
  "maxInstallments": 3,
  "metadata": {
    "customer_id": "123",
    "order_id": "456"
  }
}
'

import requests

url = "https://api.paycashless.com/v1/invoices"

payload = {
    "reference": "<string>",
    "description": "<string>",
    "customer": {
        "email": "[email protected]",
        "name": "<string>",
        "address": "<string>"
    },
    "items": [
        {
            "name": "<string>",
            "quantity": 123,
            "description": "<string>",
            "price": 100000
        }
    ],
    "daysUntilDue": 30,
    "acceptPartialPayments": False,
    "sendEmail": False,
    "autoFinalize": True,
    "callbackUrl": "https://example.com/callback",
    "returnUrl": "https://example.com/return",
    "taxRateIds": ["txr_1"],
    "maxInstallments": 3,
    "metadata": {
        "customer_id": "123",
        "order_id": "456"
    }
}
headers = {
    "Request-Signature": "<request-signature>",
    "Request-Timestamp": "<request-timestamp>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'Request-Signature': '<request-signature>',
    'Request-Timestamp': '<request-timestamp>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    reference: '<string>',
    description: '<string>',
    customer: {email: '[email protected]', name: '<string>', address: '<string>'},
    items: [{name: '<string>', quantity: 123, description: '<string>', price: 100000}],
    daysUntilDue: 30,
    acceptPartialPayments: false,
    sendEmail: false,
    autoFinalize: true,
    callbackUrl: 'https://example.com/callback',
    returnUrl: 'https://example.com/return',
    taxRateIds: ['txr_1'],
    maxInstallments: 3,
    metadata: {customer_id: '123', order_id: '456'}
  })
};

fetch('https://api.paycashless.com/v1/invoices', 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.paycashless.com/v1/invoices",
  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([
    'reference' => '<string>',
    'description' => '<string>',
    'customer' => [
        'email' => '[email protected]',
        'name' => '<string>',
        'address' => '<string>'
    ],
    'items' => [
        [
                'name' => '<string>',
                'quantity' => 123,
                'description' => '<string>',
                'price' => 100000
        ]
    ],
    'daysUntilDue' => 30,
    'acceptPartialPayments' => false,
    'sendEmail' => false,
    'autoFinalize' => true,
    'callbackUrl' => 'https://example.com/callback',
    'returnUrl' => 'https://example.com/return',
    'taxRateIds' => [
        'txr_1'
    ],
    'maxInstallments' => 3,
    'metadata' => [
        'customer_id' => '123',
        'order_id' => '456'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "Request-Signature: <request-signature>",
    "Request-Timestamp: <request-timestamp>"
  ],
]);

$response = curl_exec($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.paycashless.com/v1/invoices"

	payload := strings.NewReader("{\n  \"reference\": \"<string>\",\n  \"description\": \"<string>\",\n  \"customer\": {\n    \"email\": \"[email protected]\",\n    \"name\": \"<string>\",\n    \"address\": \"<string>\"\n  },\n  \"items\": [\n    {\n      \"name\": \"<string>\",\n      \"quantity\": 123,\n      \"description\": \"<string>\",\n      \"price\": 100000\n    }\n  ],\n  \"daysUntilDue\": 30,\n  \"acceptPartialPayments\": false,\n  \"sendEmail\": false,\n  \"autoFinalize\": true,\n  \"callbackUrl\": \"https://example.com/callback\",\n  \"returnUrl\": \"https://example.com/return\",\n  \"taxRateIds\": [\n    \"txr_1\"\n  ],\n  \"maxInstallments\": 3,\n  \"metadata\": {\n    \"customer_id\": \"123\",\n    \"order_id\": \"456\"\n  }\n}")

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

	req.Header.Add("Request-Signature", "<request-signature>")
	req.Header.Add("Request-Timestamp", "<request-timestamp>")
	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.paycashless.com/v1/invoices")
  .header("Request-Signature", "<request-signature>")
  .header("Request-Timestamp", "<request-timestamp>")
  .header("Content-Type", "application/json")
  .body("{\n  \"reference\": \"<string>\",\n  \"description\": \"<string>\",\n  \"customer\": {\n    \"email\": \"[email protected]\",\n    \"name\": \"<string>\",\n    \"address\": \"<string>\"\n  },\n  \"items\": [\n    {\n      \"name\": \"<string>\",\n      \"quantity\": 123,\n      \"description\": \"<string>\",\n      \"price\": 100000\n    }\n  ],\n  \"daysUntilDue\": 30,\n  \"acceptPartialPayments\": false,\n  \"sendEmail\": false,\n  \"autoFinalize\": true,\n  \"callbackUrl\": \"https://example.com/callback\",\n  \"returnUrl\": \"https://example.com/return\",\n  \"taxRateIds\": [\n    \"txr_1\"\n  ],\n  \"maxInstallments\": 3,\n  \"metadata\": {\n    \"customer_id\": \"123\",\n    \"order_id\": \"456\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.paycashless.com/v1/invoices")

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

request = Net::HTTP::Post.new(url)
request["Request-Signature"] = '<request-signature>'
request["Request-Timestamp"] = '<request-timestamp>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"reference\": \"<string>\",\n  \"description\": \"<string>\",\n  \"customer\": {\n    \"email\": \"[email protected]\",\n    \"name\": \"<string>\",\n    \"address\": \"<string>\"\n  },\n  \"items\": [\n    {\n      \"name\": \"<string>\",\n      \"quantity\": 123,\n      \"description\": \"<string>\",\n      \"price\": 100000\n    }\n  ],\n  \"daysUntilDue\": 30,\n  \"acceptPartialPayments\": false,\n  \"sendEmail\": false,\n  \"autoFinalize\": true,\n  \"callbackUrl\": \"https://example.com/callback\",\n  \"returnUrl\": \"https://example.com/return\",\n  \"taxRateIds\": [\n    \"txr_1\"\n  ],\n  \"maxInstallments\": 3,\n  \"metadata\": {\n    \"customer_id\": \"123\",\n    \"order_id\": \"456\"\n  }\n}"

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

{
  "id": "<string>",
  "customerId": "<string>",
  "description": "<string>",
  "reference": "<string>",
  "sendEmail": true,
  "dueDate": "2023-11-07T05:31:56Z",
  "liveMode": true,
  "number": "0001",
  "amountDue": 100000,
  "amountPaid": 100000,
  "totalInclusiveTaxAmount": 10000,
  "totalExclusiveTaxAmount": 10000,
  "taxRateIds": [
    "tax_rate_1"
  ],
  "items": [
    {
      "id": "<string>",
      "name": "<string>",
      "quantity": 123,
      "price": 1000
    }
  ],
  "hostedInvoiceUrl": "https://invoicing.paycashless.com/inv_123",
  "maxInstallments": 3
}