curl --request POST \
  --url https://besimplo.com/api/v1/invoices \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "invoice": {
    "customer_id": "cus_01h455vb4pex5vsknk084sn02p",
    "line_items": [
      {
        "price_id": "price_01h455vb4pex5vsknk084sn02q",
        "quantity": 1
      }
    ],
    "discounts": [
      {
        "type": "percentage",
        "percentage": 10,
        "amount": 500,
        "description": "Desconto de fidelidade"
      }
    ],
    "external_code": "PEDIDO-123"
  }
}
'

import requests

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

payload = { "invoice": {
        "customer_id": "cus_01h455vb4pex5vsknk084sn02p",
        "line_items": [
            {
                "price_id": "price_01h455vb4pex5vsknk084sn02q",
                "quantity": 1
            }
        ],
        "discounts": [
            {
                "type": "percentage",
                "percentage": 10,
                "amount": 500,
                "description": "Desconto de fidelidade"
            }
        ],
        "external_code": "PEDIDO-123"
    } }
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({
    invoice: {
      customer_id: 'cus_01h455vb4pex5vsknk084sn02p',
      line_items: [{price_id: 'price_01h455vb4pex5vsknk084sn02q', quantity: 1}],
      discounts: [
        {
          type: 'percentage',
          percentage: 10,
          amount: 500,
          description: 'Desconto de fidelidade'
        }
      ],
      external_code: 'PEDIDO-123'
    }
  })
};

fetch('https://besimplo.com/api/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://besimplo.com/api/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([
    'invoice' => [
        'customer_id' => 'cus_01h455vb4pex5vsknk084sn02p',
        'line_items' => [
                [
                                'price_id' => 'price_01h455vb4pex5vsknk084sn02q',
                                'quantity' => 1
                ]
        ],
        'discounts' => [
                [
                                'type' => 'percentage',
                                'percentage' => 10,
                                'amount' => 500,
                                'description' => 'Desconto de fidelidade'
                ]
        ],
        'external_code' => 'PEDIDO-123'
    ]
  ]),
  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://besimplo.com/api/v1/invoices"

	payload := strings.NewReader("{\n  \"invoice\": {\n    \"customer_id\": \"cus_01h455vb4pex5vsknk084sn02p\",\n    \"line_items\": [\n      {\n        \"price_id\": \"price_01h455vb4pex5vsknk084sn02q\",\n        \"quantity\": 1\n      }\n    ],\n    \"discounts\": [\n      {\n        \"type\": \"percentage\",\n        \"percentage\": 10,\n        \"amount\": 500,\n        \"description\": \"Desconto de fidelidade\"\n      }\n    ],\n    \"external_code\": \"PEDIDO-123\"\n  }\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://besimplo.com/api/v1/invoices")
  .header("Authorization", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"invoice\": {\n    \"customer_id\": \"cus_01h455vb4pex5vsknk084sn02p\",\n    \"line_items\": [\n      {\n        \"price_id\": \"price_01h455vb4pex5vsknk084sn02q\",\n        \"quantity\": 1\n      }\n    ],\n    \"discounts\": [\n      {\n        \"type\": \"percentage\",\n        \"percentage\": 10,\n        \"amount\": 500,\n        \"description\": \"Desconto de fidelidade\"\n      }\n    ],\n    \"external_code\": \"PEDIDO-123\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

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

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  \"invoice\": {\n    \"customer_id\": \"cus_01h455vb4pex5vsknk084sn02p\",\n    \"line_items\": [\n      {\n        \"price_id\": \"price_01h455vb4pex5vsknk084sn02q\",\n        \"quantity\": 1\n      }\n    ],\n    \"discounts\": [\n      {\n        \"type\": \"percentage\",\n        \"percentage\": 10,\n        \"amount\": 500,\n        \"description\": \"Desconto de fidelidade\"\n      }\n    ],\n    \"external_code\": \"PEDIDO-123\"\n  }\n}"

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