Validate an Argentine CUIT or CUIL tax id
Validate an Argentine CUIT or CUIL tax id: format and check-digit verification, normalized and formatted forms, declared type (CUIT or CUIL). Use this when an agent collects Argentine customer or supplier ids and must reject typos before invoicing or onboarding. Mathematical validation only: it does not confirm registration or ownership. JSON, no model inference. Free sample at /api/cuit-ar/sample.
Answeringour last check, 2026-10-20
1 of 1checks answered this week
1402 msmedian answer time
$0.001listed price per call
$0.001price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://tienda.textokit.store/api/cuit-ar
| Category | Commerce and shopping |
|---|---|
| Provider host | tienda.textokit.store |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 3 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-20 | valid payment request | 402 | $0.001 | 1402 ms |
Example input (from the provider)
{
"body": {
"identifier": "20-12345678-6",
"type": "CUIT"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"identifier": {
"description": "Once d\u00edgitos o formato XX-XXXXXXXX-X.",
"maxLength": 32,
"minLength": 1,
"type": "string"
},
"type": {
"description": "Tipo declarado; auto deja el tipo sin determinar.",
"enum": [
"auto",
"CUIT",
"CUIL"
],
"type": "string"
}
},
"required": [
"identifier"
],
"type": "object"
},
"bodyType": {
"const": "json",
"type": "string"
},
"method": {
"const": "POST",
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"body"
],
"type": "object"
},
"output": {
"properties": {
"calculatedCheckDigit": {
"type": "number"
},
"checksumValid": {
"type": "boolean"
},
"errors": {
"type": "array"
},
"formatValid": {
"type": "boolean"
},
"formatted": {
"type": "string"
},
"mathematicallyValid": {
"type": "boolean"
},
"normalized": {
"type": "string"
},
"providedCheckDigit": {
"type": "number"
},
"publicVerification": {
"type": "object"
},
"requestedType": {
"type": "string"
},
"scope": {
"type": "string"
},
"type": {
"type": "string"
},
"typeBasis": {
"type": "string"
},
"typeConfirmed": {
"type": "boolean"
}
},
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}