curl --request GET \
  --url {protocol}://{host}/wp-json/cocart/v2/products/attributes

import requests

url = "{protocol}://{host}/wp-json/cocart/v2/products/attributes"

response = requests.get(url)

print(response.text)

const options = {method: 'GET'};

fetch('{protocol}://{host}/wp-json/cocart/v2/products/attributes', 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 => "{protocol}://{host}/wp-json/cocart/v2/products/attributes",
  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 := "{protocol}://{host}/wp-json/cocart/v2/products/attributes"

	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("{protocol}://{host}/wp-json/cocart/v2/products/attributes")
  .asString();

require 'uri'
require 'net/http'

url = URI("{protocol}://{host}/wp-json/cocart/v2/products/attributes")

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

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

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

[
  {
    "id": 1,
    "name": "Size",
    "position": 0,
    "visible": true,
    "variation": true,
    "options": [
      "Small",
      "Medium",
      "Large",
      "X-Large",
      "2X-Large"
    ]
  },
  {
    "id": 2,
    "name": "Color",
    "position": 1,
    "visible": true,
    "variation": true,
    "options": [
      "Red",
      "Blue",
      "Green",
      "Black",
      "White",
      "Navy Blue",
      "Gray"
    ]
  },
  {
    "id": 3,
    "name": "Material",
    "position": 2,
    "visible": true,
    "variation": false,
    "options": [
      "Cotton",
      "Polyester",
      "Wool",
      "Silk"
    ]
  }
]

{
  "code": "cocart_invalid_parameter",
  "message": "Invalid parameter provided.",
  "data": {
    "status": 400
  }
}