# Italian IBAN Validator (IT, length 27)

> Italian IBAN Validator (IT, length 27) is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-29).

Validates whether a given string is a mod-97-valid Italian IBAN of exactly 27 characters.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/check-iban-it?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/italian-iban-validator-it-length-27-08727920
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PcDmRqbEhcAfxm4rmv11o

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 italian-iban-validator-it-length-27-08727920 -d '<json body>'
```

Example prompt: Can you check if 'IT60X0542811101000000123456' is a valid Italian IBAN — make sure it passes the mod-97 checksum and is exactly 27 characters long?

## When to prefer this

Use this endpoint when you specifically need to validate an Italian (IT) IBAN of exactly 27 characters using the mod-97 algorithm. Prefer the free sandbox endpoint POST /v1/sandbox/check-iban-it first for testing. Choose country-specific sibling endpoints (LT, LU, LV, MK, MR, PK, PS) when validating IBANs from those nations instead.

## Known failure modes

- IBAN is wrong length (not 27 characters) — validation fails
- IBAN does not start with 'IT' country code — validation fails
- Mod-97 checksum does not pass — validation fails
- Empty or missing input value — request error
- Input exceeds maxLength or is malformed JSON — request rejected
- Payment not included or insufficient USDC — HTTP 402 response

## How this service works

Call when an agent needs whether an IBAN is a mod-97-valid IT number of length 27. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/check-iban-it first.

## Output

Returns a boolean or structured result indicating whether the submitted string is a valid Italian (IT) IBAN: passes mod-97 checksum validation, starts with 'IT', and is exactly 27 characters in length. Invalid IBANs return a failure/false result.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "data": {
   "description": "JSON value for schema-check SKUs. Omit it on string checks such as email or IBAN."
  },
  "value": {
   "type": "string",
   "examples": [
    "IT64AAAA0000000000000000000"
   ],
   "maxLength": 20000,
   "minLength": 1,
   "description": "Value to check. The route description names the format: email, phone, IBAN, postal code, VAT, national id, or similar."
  },
  "schema": {
   "description": "JSON Schema document for schema-check SKUs. Omit it on string checks."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/italian-iban-validator-it-length-27-08727920/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentshelf.syntexa.ch](https://www.zero.xyz/host/agentshelf.syntexa.ch/llms.txt)