curl --request GET \
  --url https://api.getlago.com/api/v1/subscriptions/{external_id}/fixed_charges \
  --header 'Authorization: Bearer <token>'

import requests

url = "https://api.getlago.com/api/v1/subscriptions/{external_id}/fixed_charges"

headers = {"Authorization": "Bearer <token>"}

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

print(response.text)

const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

fetch('https://api.getlago.com/api/v1/subscriptions/{external_id}/fixed_charges', 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.getlago.com/api/v1/subscriptions/{external_id}/fixed_charges",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>"
  ],
]);

$response = curl_exec($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.getlago.com/api/v1/subscriptions/{external_id}/fixed_charges"

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

	req.Header.Add("Authorization", "Bearer <token>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://api.getlago.com/api/v1/subscriptions/{external_id}/fixed_charges")
  .header("Authorization", "Bearer <token>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.getlago.com/api/v1/subscriptions/{external_id}/fixed_charges")

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

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'

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

{
  "fixed_charges": [
    {
      "lago_id": "1a901a90-1a90-1a90-1a90-1a901a901a90",
      "lago_add_on_id": "1a901a90-1a90-1a90-1a90-1a901a901a90",
      "invoice_display_name": "Setup fee",
      "add_on_code": "setup_fee",
      "created_at": "2023-06-27T19:43:42Z",
      "code": "setup_fee",
      "charge_model": "standard",
      "pay_in_advance": false,
      "prorated": false,
      "properties": {
        "amount": "30",
        "graduated_ranges": [
          {
            "from_value": 0,
            "to_value": 10,
            "flat_amount": "10",
            "per_unit_amount": "0.5"
          }
        ],
        "volume_ranges": [
          {
            "from_value": 0,
            "to_value": 10,
            "flat_amount": "10",
            "per_unit_amount": "0.5"
          }
        ]
      },
      "units": 1,
      "lago_parent_id": "1a901a90-1a90-1a90-1a90-1a901a901a90",
      "taxes": [
        {
          "lago_id": "1a901a90-1a90-1a90-1a90-1a901a901a90",
          "name": "TVA",
          "code": "french_standard_vat",
          "rate": 20,
          "applied_to_organization": true,
          "created_at": "2023-07-06T14:35:58Z",
          "description": "French standard VAT"
        }
      ]
    }
  ],
  "meta": {
    "current_page": 2,
    "total_pages": 4,
    "total_count": 70,
    "next_page": 3,
    "prev_page": 1
  }
}

{
  "status": 401,
  "error": "Unauthorized"
}

{
  "status": 404,
  "error": "Not Found",
  "code": "object_not_found"
}