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

import requests

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

response = requests.get(url)

print(response.text)

const options = {method: 'GET'};

fetch('https://api.{tenant}.getomneo.com/api/v3/lists/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/lists/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/lists/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/lists/definitions")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.{tenant}.getomneo.com/api/v3/lists/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,
      "name": "<string>",
      "handle": "<string>",
      "type": "<string>",
      "icon": "<string>",
      "cover": "<string>",
      "short_description": "<string>",
      "description": "<string>",
      "allow_share": true,
      "allow_quantity": true,
      "allow_reserve": true,
      "allow_custom_product": true,
      "timezone": "<string>",
      "reservation_period": 123,
      "reservation_period_type": "<string>",
      "reservation_absolute_expiry": "<string>",
      "reservation_reserved_target_id": 123,
      "reservation_notify_reserved_offset_days": 123,
      "reservation_notify_reserved_offset_hours": 123,
      "reservation_expiry_target_id": 123,
      "reservation_remind_target_id": 123,
      "reservation_notify_remind_offset_days": 123,
      "reservation_notify_remind_offset_hours": 123,
      "meta": [
        "<unknown>"
      ],
      "is_published": true,
      "is_active": true,
      "allow_edit": true,
      "allow_new": true,
      "allow_delete": true,
      "tags": [
        "<string>"
      ],
      "organisation": {
        "id": 123,
        "name": "<string>",
        "handle": "<string>",
        "description": "<string>",
        "short_description": "<string>",
        "icon": "<string>",
        "image_url": "<string>",
        "notes": "<string>",
        "type": "<string>",
        "status": "<string>",
        "is_tenant": 123,
        "is_active": 123,
        "phone": "<string>",
        "email": "<string>",
        "secondary_phone": "<string>",
        "domain": "<string>",
        "authorised_domains": [
          "<unknown>"
        ],
        "meta": [
          "<unknown>"
        ],
        "locations": [
          {
            "id": 123,
            "type": "<string>",
            "name": "<string>",
            "handle": "<string>",
            "description": "<string>",
            "phone": "<string>",
            "email": "<string>",
            "timezone": "<string>",
            "external_id": "<string>",
            "external_code": "<string>",
            "is_published": true,
            "is_permanently_closed": true,
            "address": {
              "id": 123,
              "address_line_1": "<string>",
              "address_line_2": "<string>",
              "address_line_3": "<string>",
              "company": "<string>",
              "latitude": 123,
              "longitude": 123,
              "city": "<string>",
              "postcode": "<string>",
              "state": "<string>",
              "country": "<string>",
              "notes": "<string>",
              "external_id": "<string>",
              "is_default": true,
              "created_at": "<string>",
              "updated_at": "<string>",
              "meta": [
                "<unknown>"
              ],
              "name": "<string>",
              "type": "<string>",
              "phone": "<string>",
              "iso": "<string>",
              "iso_state": "<string>",
              "profile_id": "<string>",
              "custom_fields": {}
            },
            "normal_hours": [
              [
                "<unknown>"
              ]
            ],
            "special_hours": [
              [
                "<unknown>"
              ]
            ],
            "tags": [
              "<string>"
            ],
            "custom_fields": {},
            "icon": "<string>",
            "country_iso_3": "<string>",
            "image_url": "<string>",
            "created_at": "<string>",
            "updated_at": "<string>",
            "departments": [
              {
                "id": 123,
                "name": "<string>",
                "handle": "<string>",
                "external_id": "<string>",
                "external_code": "<string>",
                "description": "<string>",
                "short_description": "<string>",
                "url": "<string>",
                "image_url": "<string>",
                "internal_note": "<string>",
                "meta": [
                  "<unknown>"
                ],
                "brand_id": 123,
                "location_id": 123,
                "brand": {
                  "name": "<string>",
                  "handle": "<string>"
                },
                "created_at": "<string>",
                "updated_at": "<string>"
              }
            ]
          }
        ],
        "address": {
          "id": 123,
          "address_line_1": "<string>",
          "address_line_2": "<string>",
          "address_line_3": "<string>",
          "company": "<string>",
          "latitude": 123,
          "longitude": 123,
          "city": "<string>",
          "postcode": "<string>",
          "state": "<string>",
          "country": "<string>",
          "notes": "<string>",
          "external_id": "<string>",
          "is_default": true,
          "created_at": "<string>",
          "updated_at": "<string>",
          "meta": [
            "<unknown>"
          ],
          "name": "<string>",
          "type": "<string>",
          "phone": "<string>",
          "iso": "<string>",
          "iso_state": "<string>",
          "profile_id": "<string>",
          "custom_fields": {}
        },
        "custom_fields": {},
        "created_at": "<string>",
        "updated_at": "<string>"
      }
    }
  ]
}

{
  "message": "<string>"
}

{
  "message": "<string>"
}