> ## Documentation Index
> Fetch the complete documentation index at: https://docs.gu1.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Verificar CUIT no corpus

> Verifica se um CUIT existe no corpus — found true/false com HTTP 200. Sem cobrança.

## Endpoint

```
GET https://api.gu1.ai/api/integration-services/ar_gueno_holder_intelligence_service/cuits/{cuit}/exists
```

<ParamField path="cuit" type="string" required>
  CUIT/CUIL Argentina — **11 dígitos**, sem hífens.
</ParamField>

## Resposta

<ResponseField name="data.found" type="boolean">
  `true` se o titular existe; `false` se não (sempre HTTP 200).
</ResponseField>

## Erros

| HTTP | `error.code`          |
| ---- | --------------------- |
| 503  | `SERVICE_UNAVAILABLE` |
| 500  | `INTERNAL_ERROR`      |