curl --request POST \
  --url https://api.cal.com/v2/insights/bookings/average-duration \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "scope": "user",
  "timeZone": "America/New_York",
  "selectedTeamId": 12,
  "columnFilters": [
    {
      "id": "createdAt",
      "value": {
        "type": "dr",
        "data": {
          "startDate": "2024-01-01",
          "endDate": "2024-01-31",
          "preset": "custom"
        }
      }
    }
  ]
}
'

import requests

url = "https://api.cal.com/v2/insights/bookings/average-duration"

payload = {
    "scope": "user",
    "timeZone": "America/New_York",
    "selectedTeamId": 12,
    "columnFilters": [
        {
            "id": "createdAt",
            "value": {
                "type": "dr",
                "data": {
                    "startDate": "2024-01-01",
                    "endDate": "2024-01-31",
                    "preset": "custom"
                }
            }
        }
    ]
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    scope: 'user',
    timeZone: 'America/New_York',
    selectedTeamId: 12,
    columnFilters: [
      {
        id: 'createdAt',
        value: {
          type: 'dr',
          data: {startDate: '2024-01-01', endDate: '2024-01-31', preset: 'custom'}
        }
      }
    ]
  })
};

fetch('https://api.cal.com/v2/insights/bookings/average-duration', 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.cal.com/v2/insights/bookings/average-duration",
  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([
    'scope' => 'user',
    'timeZone' => 'America/New_York',
    'selectedTeamId' => 12,
    'columnFilters' => [
        [
                'id' => 'createdAt',
                'value' => [
                                'type' => 'dr',
                                'data' => [
                                                                'startDate' => '2024-01-01',
                                                                'endDate' => '2024-01-31',
                                                                'preset' => 'custom'
                                ]
                ]
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "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://api.cal.com/v2/insights/bookings/average-duration"

	payload := strings.NewReader("{\n  \"scope\": \"user\",\n  \"timeZone\": \"America/New_York\",\n  \"selectedTeamId\": 12,\n  \"columnFilters\": [\n    {\n      \"id\": \"createdAt\",\n      \"value\": {\n        \"type\": \"dr\",\n        \"data\": {\n          \"startDate\": \"2024-01-01\",\n          \"endDate\": \"2024-01-31\",\n          \"preset\": \"custom\"\n        }\n      }\n    }\n  ]\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	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.cal.com/v2/insights/bookings/average-duration")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"scope\": \"user\",\n  \"timeZone\": \"America/New_York\",\n  \"selectedTeamId\": 12,\n  \"columnFilters\": [\n    {\n      \"id\": \"createdAt\",\n      \"value\": {\n        \"type\": \"dr\",\n        \"data\": {\n          \"startDate\": \"2024-01-01\",\n          \"endDate\": \"2024-01-31\",\n          \"preset\": \"custom\"\n        }\n      }\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.cal.com/v2/insights/bookings/average-duration")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"scope\": \"user\",\n  \"timeZone\": \"America/New_York\",\n  \"selectedTeamId\": 12,\n  \"columnFilters\": [\n    {\n      \"id\": \"createdAt\",\n      \"value\": {\n        \"type\": \"dr\",\n        \"data\": {\n          \"startDate\": \"2024-01-01\",\n          \"endDate\": \"2024-01-31\",\n          \"preset\": \"custom\"\n        }\n      }\n    }\n  ]\n}"

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

{
  "status": "success",
  "data": [
    {
      "Date": "Jan 1",
      "formattedDateFull": "Jan 1, 2024",
      "isToday": false,
      "Average": 30
    }
  ]
}