curl --request GET \
  --url https://www.merchkit.com/api/v1/categories \
  --header 'Authorization: Bearer <token>'

import requests

url = "https://www.merchkit.com/api/v1/categories"

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

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

print(response.text)

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

fetch('https://www.merchkit.com/api/v1/categories', 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://www.merchkit.com/api/v1/categories",
  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://www.merchkit.com/api/v1/categories"

	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://www.merchkit.com/api/v1/categories")
  .header("Authorization", "Bearer <token>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://www.merchkit.com/api/v1/categories")

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

{
  "data": [
    {
      "id": "c41d09f3-2e85-47a6-b93c-d5f8e1a20c67",
      "type": "category",
      "label": "Dining Tables",
      "parent_id": null,
      "created_at": "2026-06-02T14:11:09Z",
      "updated_at": "2026-07-18T09:30:22Z",
      "attributes": {
        "category_name": "Dining Tables",
        "department": "Furniture"
      }
    }
  ],
  "pagination": {
    "total": 128,
    "limit": 50,
    "offset": 0,
    "has_more": true
  }
}

{
  "error": {
    "code": "validation_failed",
    "message": "Unknown attribute key(s): colour.",
    "documentation_url": "https://docs.merchkit.com/developers/errors#validation_failed",
    "is_retriable": false,
    "retry_after_seconds": null,
    "alternative_action": "List valid attribute keys via GET /v1/attributes?type=product.",
    "request_id": "req_01j9x2k8",
    "field_errors": [
      {
        "field": "colour",
        "issue": "not_a_defined_attribute"
      }
    ]
  }
}