curl --request GET \
--url https://www.closient.com/products/api/v1/products/{gtin}/lots/{lot_id}/pti-case-label/ \
--header 'X-API-Key: <api-key>'import requests
url = "https://www.closient.com/products/api/v1/products/{gtin}/lots/{lot_id}/pti-case-label/"
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/products/api/v1/products/{gtin}/lots/{lot_id}/pti-case-label/', 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/products/api/v1/products/{gtin}/lots/{lot_id}/pti-case-label/",
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/products/api/v1/products/{gtin}/lots/{lot_id}/pti-case-label/"
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/products/api/v1/products/{gtin}/lots/{lot_id}/pti-case-label/")
.header("X-API-Key", "<api-key>")
.asString();require 'uri'
require 'net/http'
url = URI("https://www.closient.com/products/api/v1/products/{gtin}/lots/{lot_id}/pti-case-label/")
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"<string>"{
"detail": "The requested resource was not found.",
"error_code": "not_found",
"retryable": false,
"status": 404,
"timestamp": "2026-03-31T12:00:00+00:00",
"title": "Not Found",
"type": "https://closient.com/docs/errors/not_found"
}{
"detail": "The requested resource was not found.",
"error_code": "not_found",
"retryable": false,
"status": 404,
"timestamp": "2026-03-31T12:00:00+00:00",
"title": "Not Found",
"type": "https://closient.com/docs/errors/not_found"
}{
"detail": "The requested resource was not found.",
"error_code": "not_found",
"retryable": false,
"status": 404,
"timestamp": "2026-03-31T12:00:00+00:00",
"title": "Not Found",
"type": "https://closient.com/docs/errors/not_found"
}{
"detail": "The requested resource was not found.",
"error_code": "not_found",
"retryable": false,
"status": 404,
"timestamp": "2026-03-31T12:00:00+00:00",
"title": "Not Found",
"type": "https://closient.com/docs/errors/not_found"
}{
"detail": "The requested resource was not found.",
"error_code": "not_found",
"retryable": false,
"status": 404,
"timestamp": "2026-03-31T12:00:00+00:00",
"title": "Not Found",
"type": "https://closient.com/docs/errors/not_found"
}{
"detail": "The requested resource was not found.",
"error_code": "not_found",
"retryable": false,
"status": 404,
"timestamp": "2026-03-31T12:00:00+00:00",
"title": "Not Found",
"type": "https://closient.com/docs/errors/not_found"
}{
"detail": "The requested resource was not found.",
"error_code": "not_found",
"retryable": false,
"status": 404,
"timestamp": "2026-03-31T12:00:00+00:00",
"title": "Not Found",
"type": "https://closient.com/docs/errors/not_found"
}Generate a PTI-compliant case label
Render a Produce Traceability Initiative (PTI) case label for a product + lot: a GS1-128 barcode encoding at minimum GTIN (AI 01) and Batch/Lot Number (AI 10) — the only two AIs PTI itself mandates — plus production date (AI 11) and a single shelf-life date (best-before AI 15 or use-by AI 17, never both) when the lot carries them. GTIN and Lot are also rendered as human-readable text beneath the bars. Returns image bytes (image/svg+xml, image/png, application/postscript, or application/pdf).
Caching: responses are deterministic given the product/lot state. The endpoint sets Cache-Control: public, max-age=2592000 (30 days) and a strong ETag. Clients sending If-None-Match with a matching ETag get 304 Not Modified.
curl --request GET \
--url https://www.closient.com/products/api/v1/products/{gtin}/lots/{lot_id}/pti-case-label/ \
--header 'X-API-Key: <api-key>'import requests
url = "https://www.closient.com/products/api/v1/products/{gtin}/lots/{lot_id}/pti-case-label/"
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/products/api/v1/products/{gtin}/lots/{lot_id}/pti-case-label/', 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/products/api/v1/products/{gtin}/lots/{lot_id}/pti-case-label/",
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/products/api/v1/products/{gtin}/lots/{lot_id}/pti-case-label/"
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/products/api/v1/products/{gtin}/lots/{lot_id}/pti-case-label/")
.header("X-API-Key", "<api-key>")
.asString();require 'uri'
require 'net/http'
url = URI("https://www.closient.com/products/api/v1/products/{gtin}/lots/{lot_id}/pti-case-label/")
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"<string>"{
"detail": "The requested resource was not found.",
"error_code": "not_found",
"retryable": false,
"status": 404,
"timestamp": "2026-03-31T12:00:00+00:00",
"title": "Not Found",
"type": "https://closient.com/docs/errors/not_found"
}{
"detail": "The requested resource was not found.",
"error_code": "not_found",
"retryable": false,
"status": 404,
"timestamp": "2026-03-31T12:00:00+00:00",
"title": "Not Found",
"type": "https://closient.com/docs/errors/not_found"
}{
"detail": "The requested resource was not found.",
"error_code": "not_found",
"retryable": false,
"status": 404,
"timestamp": "2026-03-31T12:00:00+00:00",
"title": "Not Found",
"type": "https://closient.com/docs/errors/not_found"
}{
"detail": "The requested resource was not found.",
"error_code": "not_found",
"retryable": false,
"status": 404,
"timestamp": "2026-03-31T12:00:00+00:00",
"title": "Not Found",
"type": "https://closient.com/docs/errors/not_found"
}{
"detail": "The requested resource was not found.",
"error_code": "not_found",
"retryable": false,
"status": 404,
"timestamp": "2026-03-31T12:00:00+00:00",
"title": "Not Found",
"type": "https://closient.com/docs/errors/not_found"
}{
"detail": "The requested resource was not found.",
"error_code": "not_found",
"retryable": false,
"status": 404,
"timestamp": "2026-03-31T12:00:00+00:00",
"title": "Not Found",
"type": "https://closient.com/docs/errors/not_found"
}{
"detail": "The requested resource was not found.",
"error_code": "not_found",
"retryable": false,
"status": 404,
"timestamp": "2026-03-31T12:00:00+00:00",
"title": "Not Found",
"type": "https://closient.com/docs/errors/not_found"
}Authorizations
Path Parameters
GTIN-14 of the product.
Lot id (UUID or 22-char shortuuid).
Query Parameters
Output image format.
svg, png, eps, pdf Response
OK
The response is of type file.