curl --request GET \
  --url https://api.teamfollowup.ai/api/billing/usage \
  --header 'Authorization: Bearer YOUR_API_KEY'

import requests

url = "https://api.teamfollowup.ai/api/billing/usage"

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

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

print(response.text)

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

fetch('https://api.teamfollowup.ai/api/billing/usage', 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.teamfollowup.ai/api/billing/usage",
  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.teamfollowup.ai/api/billing/usage"

	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.teamfollowup.ai/api/billing/usage")
  .header("Authorization", "Bearer <token>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.teamfollowup.ai/api/billing/usage")

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

{
  "success": true,
  "data": {
    "window": {
      "from": "2026-08-16",
      "to": "2026-09-14",
      "days": 30
    },
    "groupBy": "sub_account",
    "totals": {
      "calls": 2610,
      "minutes": 4702.3,
      "callCostUSD": 1598.78,
      "billedToClientsUSD": 1841.2,
      "phoneNumbersUSD": 8,
      "coAuthorUSD": 6.5,
      "totalCostUSD": 1613.28
    },
    "subAccounts": [
      {
        "subAccount": {
          "locationId": "rrHDPw5RIR5ULeUlfSAR",
          "name": "Bright Dental"
        },
        "calls": 1540,
        "minutes": 2890.1,
        "callCostUSD": 982.63,
        "billedToClientsUSD": 1300.55
      },
      {
        "subAccount": {
          "locationId": "q8LmVt2ZzYQ4pWnKdRb1",
          "name": "Harbour Roofing"
        },
        "calls": 1070,
        "minutes": 1812.2,
        "callCostUSD": 616.15,
        "billedToClientsUSD": 540.65
      }
    ]
  }
}

{
  "success": false,
  "error": "BadRequest",
  "message": "The window can cover at most 366 days"
}

{
  "success": false,
  "error": "Unauthorized"
}

{
  "success": false,
  "error": "InsufficientScope",
  "message": "This API key does not have the required scope.",
  "requiredScope": "billing:read"
}

{
  "success": false,
  "error": "TooManyRequests"
}

{
  "success": false,
  "error": "InternalError",
  "message": "Could not load billing usage."
}