# Argentine CBU/CVU Bank Account Validator

> Argentine CBU/CVU Bank Account Validator is a paid API for AI agents from landingen24h.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-27).

Validates an Argentine CBU or CVU bank account number offline by checking both check digits, returning account type, entity/branch codes, bank name, and formatted value.

## Facts

- Endpoint: POST https://landingen24h.com/api/x402/ar/cbu?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/argentine-cbu-cvu-bank-account-validator-493c05b6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zqF9Kn58CbXSJvq8HuavS

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability argentine-cbu-cvu-bank-account-validator-493c05b6 -d '<json body>'
```

Example prompt: Can you check whether this Argentine bank account number is valid: 0070999003000412345671 — and tell me which bank it belongs to and what type of account it is?

## When to prefer this

Use this endpoint when you need fast, offline, zero-latency validation of Argentine CBU or CVU numbers without sending data to a bank — ideal for pre-validating user input before storing or transacting, since no data is retained and results are instant. Prefer this over live bank API lookups when you only need format/check-digit correctness and basic bank identification, not account existence or balance confirmation.

## Known failure modes

- Input CBU/CVU shorter or longer than 22 digits returns invalid result
- Non-numeric characters in input may cause parsing failure
- Unknown or smaller banks may not return a bank_name despite valid check digits
- CVU accounts may have limited bank name resolution since they belong to non-bank PSPs
- Network or service downtime returns HTTP error rather than validation result

## How this service works

Landing page para tu negocio en 24 horas: textos, diseño para celular y botón de WhatsApp. Boceto gratis: ves la primera versión antes de pagar. USD 39 de lanzamiento.

## Output

Returns a JSON object indicating whether the CBU/CVU is valid, whether each of the two check digit blocks passed, the account type (CBU or CVU), the 3-digit entity code, the 4-digit branch code, the bank name for major Argentine banks, the original input normalized to 22 digits, and a human-readable formatted version split into the two standard blocks. Also includes a note clarifying this is offline check-digit validation only and does not confirm account existence or ownership.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "cbu": {
   "type": "string",
   "maxLength": 60,
   "description": "22-digit CBU or CVU"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "note": "Check-digit validation only (offline); does not confirm the account exists or its owner.",
  "type": "CBU",
  "input": "0070999003000412345671",
  "valid": true,
  "bank_name": "Banco de Galicia",
  "block1_ok": true,
  "block2_ok": true,
  "formatted": "00709990 03000412345671",
  "normalized": "0070999003000412345671",
  "branch_code": "0999",
  "entity_code": "007"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/argentine-cbu-cvu-bank-account-validator-493c05b6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from landingen24h.com](https://www.zero.xyz/host/landingen24h.com/llms.txt)