# Norwegian IBAN Validator (NO, Length 15)

> Norwegian IBAN Validator (NO, Length 15) is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-02).

Validates whether a given string is a mod-97-valid Norwegian IBAN (country code NO, exactly 15 characters long).

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/check-iban-no?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/norwegian-iban-validator-no-length-15-d7bed55e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iGtHTh2NXMZ1h8tU6Kljb

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 norwegian-iban-validator-no-length-15-d7bed55e -d '<json body>'
```

Example prompt: Can you check if this Norwegian IBAN is valid: NO9386011117947?

## When to prefer this

Use this endpoint specifically when you need to validate a Norwegian (NO) IBAN that should be exactly 15 characters long, using the official mod-97 checksum algorithm. Prefer the free sandbox endpoint POST /v1/sandbox/check-iban-no first during development or testing. Choose this over a generic IBAN library when you need a lightweight, stateless, remote validation call that returns a definitive result without requiring local dependencies. Use sibling endpoints for other country IBANs (GI, HR, HU, etc.).

## Known failure modes

- IBAN too short or too long (not exactly 15 characters) returns invalid
- Country code is not NO — returns invalid or error
- Non-numeric characters in account number portion fail mod-97 check
- Empty or missing value field returns a 400-level error
- Malformed JSON input returns a parsing error
- Network timeout returns a 5xx error

## How this service works

Call when an agent needs whether an IBAN is a mod-97-valid NO number of length 15. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-iban-no first.

## Output

Returns a boolean or structured result indicating whether the submitted string is a mod-97-valid Norwegian IBAN of exactly 15 characters (country code NO), along with any relevant validation details such as length conformance and checksum pass/fail.

## 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": [
    "NO27AAAA0000000"
   ],
   "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/norwegian-iban-validator-no-length-15-d7bed55e/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)