curl --request GET \
  --url https://api.{tenant}.getomneo.com/api/v3/appointment-definitions

import requests

url = "https://api.{tenant}.getomneo.com/api/v3/appointment-definitions"

response = requests.get(url)

print(response.text)

const options = {method: 'GET'};

fetch('https://api.{tenant}.getomneo.com/api/v3/appointment-definitions', 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.{tenant}.getomneo.com/api/v3/appointment-definitions",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
]);

$response = curl_exec($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.{tenant}.getomneo.com/api/v3/appointment-definitions"

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

	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.{tenant}.getomneo.com/api/v3/appointment-definitions")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.{tenant}.getomneo.com/api/v3/appointment-definitions")

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

request = Net::HTTP::Get.new(url)

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

{
  "data": [
    {
      "id": 123,
      "handle": "<string>",
      "name": "<string>",
      "description": "<string>",
      "short_description": "<string>",
      "long_description": "<string>",
      "icon": "<string>",
      "image_url": "<string>",
      "terms_conditions": "<string>",
      "internal_notes": "<string>",
      "visibility_condition": [
        "<unknown>"
      ],
      "is_published": true,
      "is_archived": true,
      "duration_minutes": 123,
      "buffer_before_minutes": 123,
      "buffer_after_minutes": 123,
      "min_lead_minutes": 123,
      "max_advance_days": 123,
      "slot_interval_minutes": 123,
      "booking_type": "<string>",
      "allow_customer_booking": true,
      "allow_walk_in": true,
      "requires_staff": true,
      "customer_must_select_staff": true,
      "use_staff_from_location": true,
      "max_concurrent_bookings": 123,
      "allow_waitlist": true,
      "allow_queue": true,
      "meta": [
        "<unknown>"
      ],
      "created_target_id": 123,
      "confirmed_target_id": 123,
      "cancelled_target_id": 123,
      "rejected_target_id": 123,
      "reminder_target_id": 123,
      "completed_target_id": 123,
      "notify_created_offset_days": 123,
      "notify_created_offset_hours": 123,
      "notify_confirmed_offset_days": 123,
      "notify_confirmed_offset_hours": 123,
      "notify_cancelled_offset_days": 123,
      "notify_cancelled_offset_hours": 123,
      "notify_rejected_offset_days": 123,
      "notify_rejected_offset_hours": 123,
      "notify_reminder_offset_days": 123,
      "notify_reminder_offset_hours": 123,
      "notify_completed_offset_days": 123,
      "notify_completed_offset_hours": 123,
      "has_booking_questionnaire": true,
      "created_at": "<string>",
      "updated_at": "<string>",
      "normal_hours": [
        {
          "id": 123,
          "appointment_definition_id": 123,
          "day_of_week": "<string>",
          "available_from": "<string>",
          "available_until": "<string>",
          "is_closed": "<string>",
          "created_at": "<string>",
          "updated_at": "<string>"
        }
      ],
      "special_hours": [
        {
          "id": 123,
          "appointment_definition_id": 123,
          "name": "<string>",
          "is_repeating": true,
          "available_from": "<string>",
          "available_until": "<string>",
          "start_at": "<string>",
          "end_at": "<string>",
          "is_closed": "<string>",
          "created_at": "<string>",
          "updated_at": "<string>"
        }
      ],
      "locations": [
        "<unknown>"
      ],
      "staff": [
        {
          "id": 123,
          "appointment_definition_id": 123,
          "staff_id": "<string>",
          "is_active": true,
          "staff": {
            "id": "<string>",
            "first_name": "<string>",
            "last_name": "<string>",
            "email": "<string>",
            "mobile_phone": "<string>",
            "normal_hours": [
              {
                "id": "<string>",
                "day_of_week": "<string>",
                "available_from": "<string>",
                "available_until": "<string>",
                "is_closed": "<string>"
              }
            ],
            "special_hours": [
              {
                "id": "<string>",
                "name": "<string>",
                "is_repeating": "<string>",
                "available_from": "<string>",
                "available_until": "<string>",
                "start_at": "<string>",
                "end_at": "<string>"
              }
            ]
          },
          "created_at": "<string>",
          "updated_at": "<string>"
        }
      ],
      "booking_questionnaire": {
        "id": "<string>",
        "name": "<string>",
        "purpose": "<string>",
        "is_active": "<string>",
        "pages": "<string>"
      }
    }
  ]
}

{
  "message": "<string>"
}

{
  "message": "<string>"
}