curl --request POST \
  --url https://cdn.tailoredd.com/apiV2/admin/merchants/{merchantId}/custom-attributes \
  --header 'Content-Type: application/json' \
  --data '
{
  "label": "Size",
  "type": "select",
  "options": [
    "Small",
    "Medium",
    "Large",
    "XL"
  ],
  "required": false,
  "enabled": true,
  "displayOrder": 0
}
'

import requests

url = "https://cdn.tailoredd.com/apiV2/admin/merchants/{merchantId}/custom-attributes"

payload = {
    "label": "Size",
    "type": "select",
    "options": ["Small", "Medium", "Large", "XL"],
    "required": False,
    "enabled": True,
    "displayOrder": 0
}
headers = {"Content-Type": "application/json"}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    label: 'Size',
    type: 'select',
    options: ['Small', 'Medium', 'Large', 'XL'],
    required: false,
    enabled: true,
    displayOrder: 0
  })
};

fetch('https://cdn.tailoredd.com/apiV2/admin/merchants/{merchantId}/custom-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 => "https://cdn.tailoredd.com/apiV2/admin/merchants/{merchantId}/custom-attributes",
  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([
    'label' => 'Size',
    'type' => 'select',
    'options' => [
        'Small',
        'Medium',
        'Large',
        'XL'
    ],
    'required' => false,
    'enabled' => true,
    'displayOrder' => 0
  ]),
  CURLOPT_HTTPHEADER => [
    "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://cdn.tailoredd.com/apiV2/admin/merchants/{merchantId}/custom-attributes"

	payload := strings.NewReader("{\n  \"label\": \"Size\",\n  \"type\": \"select\",\n  \"options\": [\n    \"Small\",\n    \"Medium\",\n    \"Large\",\n    \"XL\"\n  ],\n  \"required\": false,\n  \"enabled\": true,\n  \"displayOrder\": 0\n}")

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

	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://cdn.tailoredd.com/apiV2/admin/merchants/{merchantId}/custom-attributes")
  .header("Content-Type", "application/json")
  .body("{\n  \"label\": \"Size\",\n  \"type\": \"select\",\n  \"options\": [\n    \"Small\",\n    \"Medium\",\n    \"Large\",\n    \"XL\"\n  ],\n  \"required\": false,\n  \"enabled\": true,\n  \"displayOrder\": 0\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://cdn.tailoredd.com/apiV2/admin/merchants/{merchantId}/custom-attributes")

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

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"label\": \"Size\",\n  \"type\": \"select\",\n  \"options\": [\n    \"Small\",\n    \"Medium\",\n    \"Large\",\n    \"XL\"\n  ],\n  \"required\": false,\n  \"enabled\": true,\n  \"displayOrder\": 0\n}"

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

{
  "success": true,
  "data": {}
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Rating must be between 1 and 5"
  }
}