Check CUIT in Corpus
curl --request GET \
--url http://api.gu1.ai/integration-services/ar_gueno_holder_intelligence_service/cuits/:cuit/exists \
--header 'Authorization: Bearer <token>'import requests
url = "http://api.gu1.ai/integration-services/ar_gueno_holder_intelligence_service/cuits/:cuit/exists"
headers = {"Authorization": "Bearer <token>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};
fetch('http://api.gu1.ai/integration-services/ar_gueno_holder_intelligence_service/cuits/:cuit/exists', 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 => "http://api.gu1.ai/integration-services/ar_gueno_holder_intelligence_service/cuits/:cuit/exists",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>"
],
]);
$response = curl_exec($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 := "http://api.gu1.ai/integration-services/ar_gueno_holder_intelligence_service/cuits/:cuit/exists"
req, _ := http.NewRequest("GET", url, nil)
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.get("http://api.gu1.ai/integration-services/ar_gueno_holder_intelligence_service/cuits/:cuit/exists")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("http://api.gu1.ai/integration-services/ar_gueno_holder_intelligence_service/cuits/:cuit/exists")
http = Net::HTTP.new(url.host, url.port)
request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'
response = http.request(request)
puts response.read_body{
"success": true,
"data.integrationCode": "<string>",
"data.cuit": "<string>",
"data.found": true,
"data.snapshotDate": {}
}API Reference
Check CUIT in Corpus
Check whether an Argentina CUIT exists in the gu1 holder intelligence corpus β returns found true or false with HTTP 200. Free, no billing.
GET
/
integration-services
/
ar_gueno_holder_intelligence_service
/
cuits
/
:cuit
/
exists
Check CUIT in Corpus
curl --request GET \
--url http://api.gu1.ai/integration-services/ar_gueno_holder_intelligence_service/cuits/:cuit/exists \
--header 'Authorization: Bearer <token>'import requests
url = "http://api.gu1.ai/integration-services/ar_gueno_holder_intelligence_service/cuits/:cuit/exists"
headers = {"Authorization": "Bearer <token>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};
fetch('http://api.gu1.ai/integration-services/ar_gueno_holder_intelligence_service/cuits/:cuit/exists', 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 => "http://api.gu1.ai/integration-services/ar_gueno_holder_intelligence_service/cuits/:cuit/exists",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>"
],
]);
$response = curl_exec($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 := "http://api.gu1.ai/integration-services/ar_gueno_holder_intelligence_service/cuits/:cuit/exists"
req, _ := http.NewRequest("GET", url, nil)
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.get("http://api.gu1.ai/integration-services/ar_gueno_holder_intelligence_service/cuits/:cuit/exists")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("http://api.gu1.ai/integration-services/ar_gueno_holder_intelligence_service/cuits/:cuit/exists")
http = Net::HTTP.new(url.host, url.port)
request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'
response = http.request(request)
puts response.read_body{
"success": true,
"data.integrationCode": "<string>",
"data.cuit": "<string>",
"data.found": true,
"data.snapshotDate": {}
}Overview
Checks whether a CUIT (11 digits) appears in the processed holder corpus. Returnsfound: false with HTTP 200 when the CUIT is absent (not an error). No billing.
Endpoint
GET https://api.gu1.ai/api/integration-services/ar_gueno_holder_intelligence_service/cuits/{cuit}/exists
Path parameters
string
required
Argentina CUIT/CUIL β 11 digits, no dashes.
Response
boolean
true on HTTP 200.string
ar_gueno_holder_intelligence_servicestring
Echo of the requested CUIT.
boolean
true if the holder exists in corpus; false otherwise.string | null
Snapshot date (
YYYY-MM-DD); null when found is false.Errors
| HTTP | error.code | When |
|---|---|---|
| 503 | SERVICE_UNAVAILABLE | Holder backend unavailable |
| 500 | INTERNAL_ERROR | Unexpected error |
Examples
Found
curl -s \
-H "Authorization: Bearer YOUR_API_KEY" \
"https://api.gu1.ai/api/integration-services/ar_gueno_holder_intelligence_service/cuits/20384648798/exists"
{
"success": true,
"data": {
"integrationCode": "ar_gueno_holder_intelligence_service",
"cuit": "20384648798",
"found": true,
"snapshotDate": "2026-06-24"
}
}
Not found (still HTTP 200)
{
"success": true,
"data": {
"integrationCode": "ar_gueno_holder_intelligence_service",
"cuit": "20999999999",
"found": false,
"snapshotDate": null
}
}
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