curl --request POST \
  --url https://api.fintoc.com/v2/invoices/{id}/finalize \
  --header 'Authorization: <api-key>'

import requests

url = "https://api.fintoc.com/v2/invoices/{id}/finalize"

headers = {"Authorization": "<api-key>"}

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

print(response.text)

const options = {method: 'POST', headers: {Authorization: '<api-key>'}};

fetch('https://api.fintoc.com/v2/invoices/{id}/finalize', 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.fintoc.com/v2/invoices/{id}/finalize",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_HTTPHEADER => [
    "Authorization: <api-key>"
  ],
]);

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

curl_close($curl);

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

package main

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

func main() {

	url := "https://api.fintoc.com/v2/invoices/{id}/finalize"

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

	req.Header.Add("Authorization", "<api-key>")

	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.fintoc.com/v2/invoices/{id}/finalize")
  .header("Authorization", "<api-key>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.fintoc.com/v2/invoices/{id}/finalize")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = '<api-key>'

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

{
  "id": "inv_2bVdWxLpzXq8RkNcM3JtUv9AhTe",
  "object": "invoice",
  "created_at": "2026-05-01T12:00:00Z",
  "currency": "CLP",
  "customer": "cus_2bVdWyTnGq4PfLs7DkXjRm0CwIo",
  "hosted_invoice_url": "https://acme.billing.fintoc.com/invoices/inv_2bVdWxLpzXq8RkNcM3JtUv9AhTe",
  "lines": [
    {
      "id": "il_2bVdX0PqJs6RhNu9FmZlTo2EyKq",
      "object": "line_item",
      "name": "Design",
      "description": "Design work",
      "amount": 30000,
      "currency": "CLP",
      "period_end": null,
      "period_start": null,
      "quantity": 1
    }
  ],
  "metadata": null,
  "mode": "live",
  "payments": [],
  "status": "open",
  "subscription": null,
  "total": 30000
}

{
  "error": {
    "type": "authentication_error",
    "code": "invalid_api_key",
    "message": "Invalid API Key: invalid-*oken"
  }
}

{
  "error": {
    "type": "invalid_request_error",
    "code": "missing_resource",
    "param": "id",
    "message": "No such invoicing/invoice: inv_fake_id",
    "doc_url": "https://docs.fintoc.com/reference/errors"
  }
}

{
  "error": {
    "type": "invalid_request_error",
    "code": "invoice_not_finalizable",
    "message": "Invoice cannot be finalized because it is in status: void",
    "doc_url": "https://docs.fintoc.com/reference/errors"
  }
}