curl --request GET \
--url https://www.closient.com/resolver/api/v1/public/gs1/placementimport requests
url = "https://www.closient.com/resolver/api/v1/public/gs1/placement"
response = requests.get(url)
print(response.text)const options = {method: 'GET'};
fetch('https://www.closient.com/resolver/api/v1/public/gs1/placement', 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/resolver/api/v1/public/gs1/placement",
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 := "https://www.closient.com/resolver/api/v1/public/gs1/placement"
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("https://www.closient.com/resolver/api/v1/public/gs1/placement")
.asString();require 'uri'
require 'net/http'
url = URI("https://www.closient.com/resolver/api/v1/public/gs1/placement")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
response = http.request(request)
puts response.read_body{
"principle": "Anything that must produce a decision without a network connection goes on the pack. Everything else is a pointer.",
"rows": [
{
"ai": "01",
"context": "retail_pos",
"grammar_forced": true,
"grammar_position": "path_key",
"placement": "on_pack_required",
"rationale": "The GTIN is the primary key of the Digital Link; the grammar requires it."
}
]
}{
"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"
}Which Application Identifiers belong on the pack, per scan context
Anything that must produce a decision without a network connection goes on the pack. Everything else is a pointer.
Each row classifies one AI for one scan context (consumer scan, retail POS, supply chain AIDC) as on_pack_required, on_pack_recommended or server_side_eligible, with a rationale. Supply chain AIDC is its own context because a receiving dock running a recall check on a pallet with no signal needs the lot on the pack, where a consumer scan does not.
Placement is advisory: the URI grammar decides where an AI sits and which qualifiers are mandatory, and following a recommendation never yields a non-conformant URI. AIs the standard forbids in a Digital Link are omitted.
Keyless — no API key, no signup. IP-throttled at 300 requests/minute and cached at the edge for 24h, so repeat calls for the same input do not reach origin. Over-rate callers get a 429 with a Retry-After header and a retry_after field — it never silently degrades or returns a wrong answer under load.
curl --request GET \
--url https://www.closient.com/resolver/api/v1/public/gs1/placementimport requests
url = "https://www.closient.com/resolver/api/v1/public/gs1/placement"
response = requests.get(url)
print(response.text)const options = {method: 'GET'};
fetch('https://www.closient.com/resolver/api/v1/public/gs1/placement', 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/resolver/api/v1/public/gs1/placement",
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 := "https://www.closient.com/resolver/api/v1/public/gs1/placement"
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("https://www.closient.com/resolver/api/v1/public/gs1/placement")
.asString();require 'uri'
require 'net/http'
url = URI("https://www.closient.com/resolver/api/v1/public/gs1/placement")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
response = http.request(request)
puts response.read_body{
"principle": "Anything that must produce a decision without a network connection goes on the pack. Everything else is a pointer.",
"rows": [
{
"ai": "01",
"context": "retail_pos",
"grammar_forced": true,
"grammar_position": "path_key",
"placement": "on_pack_required",
"rationale": "The GTIN is the primary key of the Digital Link; the grammar requires it."
}
]
}{
"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"
}Query Parameters
Only this Application Identifier, e.g. 10.
8^[^\x00]{0,8}$Only this scan context.
consumer_scan, retail_pos, supply_chain_aidc