curl --request GET \
  --url https://www.closient.com/agent/api/v1/products/{gtin} \
  --header 'X-API-Key: <api-key>'

import requests

url = "https://www.closient.com/agent/api/v1/products/{gtin}"

headers = {"X-API-Key": "<api-key>"}

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

print(response.text)

const options = {method: 'GET', headers: {'X-API-Key': '<api-key>'}};

fetch('https://www.closient.com/agent/api/v1/products/{gtin}', 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.closient.com/agent/api/v1/products/{gtin}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "X-API-Key: <api-key>"
  ],
]);

$response = curl_exec($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.closient.com/agent/api/v1/products/{gtin}"

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

	req.Header.Add("X-API-Key", "<api-key>")

	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.closient.com/agent/api/v1/products/{gtin}")
  .header("X-API-Key", "<api-key>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://www.closient.com/agent/api/v1/products/{gtin}")

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

request = Net::HTTP::Get.new(url)
request["X-API-Key"] = '<api-key>'

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

{
  "brand": "Acme Beverages",
  "category": "Food, Beverages & Tobacco > Beverages > Milk",
  "certifications": [
    {
      "issuing_body": "USDA",
      "label": "USDA Organic",
      "valid_from": "2024-01-01",
      "valid_until": "2026-01-01",
      "verification_status": "verified"
    }
  ],
  "claims": [
    {
      "label": "Vegan",
      "source": "THIRD_PARTY_VERIFIED",
      "valid": true
    }
  ],
  "country_of_origin": "US",
  "description": "Creamy organic almond milk, unsweetened.",
  "gtin": "00012345678905",
  "image_url": "https://cdn.closient.com/products/00012345678905/hero.jpg",
  "name": "Organic Almond Milk",
  "net_content": "500ml",
  "substances": [
    {
      "is_major_allergen": true,
      "may_contain": false,
      "name": "Almonds",
      "percentage": 15,
      "type": "FOOD_INGREDIENT"
    }
  ]
}

{
  "type": "https://closient.com/docs/errors/not_found",
  "title": "Not Found",
  "status": 404,
  "detail": "The requested resource was not found.",
  "error_code": "not_found",
  "retryable": false,
  "timestamp": "2026-03-31T12:00:00+00:00"
}

{
  "type": "https://closient.com/docs/errors/not_found",
  "title": "Not Found",
  "status": 404,
  "detail": "The requested resource was not found.",
  "error_code": "not_found",
  "retryable": false,
  "timestamp": "2026-03-31T12:00:00+00:00"
}

{
  "type": "https://closient.com/docs/errors/not_found",
  "title": "Not Found",
  "status": 404,
  "detail": "The requested resource was not found.",
  "error_code": "not_found",
  "retryable": false,
  "timestamp": "2026-03-31T12:00:00+00:00"
}

{
  "type": "https://closient.com/docs/errors/not_found",
  "title": "Not Found",
  "status": 404,
  "detail": "The requested resource was not found.",
  "error_code": "not_found",
  "retryable": false,
  "timestamp": "2026-03-31T12:00:00+00:00"
}

{
  "type": "https://closient.com/docs/errors/not_found",
  "title": "Not Found",
  "status": 404,
  "detail": "The requested resource was not found.",
  "error_code": "not_found",
  "retryable": false,
  "timestamp": "2026-03-31T12:00:00+00:00"
}