# Kuwaiti IBAN (KW) Mod-97 Validator

> Kuwaiti IBAN (KW) Mod-97 Validator is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-29).

Validates whether a given string is a mod-97-valid Kuwaiti IBAN (KW) of exactly 30 characters

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/check-iban-kw?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/kuwaiti-iban-kw-mod-97-validator-8f3b5c22
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_THXI275MN4SHaex06bHn7

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 kuwaiti-iban-kw-mod-97-validator-8f3b5c22 -d '<json body>'
```

Example prompt: Can you check whether KW81CBKU0000000000001234560101 is a valid Kuwaiti IBAN — does it pass the mod-97 check and is it exactly 30 characters long?

## When to prefer this

Use this endpoint when you specifically need to validate a Kuwaiti (KW) IBAN and require mod-97 checksum verification along with length-30 format enforcement. Prefer the free sandbox endpoint POST /v1/sandbox/check-iban-kw for testing before using this paid endpoint. Choose country-specific sibling endpoints (LT, LU, LV, MK, MR, PK, PS) when validating IBANs from those respective countries.

## Known failure modes

- Input string missing or empty — validation error returned
- IBAN fails mod-97 checksum — returns invalid result
- IBAN is not exactly 30 characters — length mismatch failure
- IBAN does not start with KW country code — format rejection
- Payment of $0.001 USDC not attached — 402 Payment Required response
- Malformed request body — 400 Bad Request

## How this service works

Call when an agent needs whether an IBAN is a mod-97-valid KW number of length 30. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/check-iban-kw first.

## Output

Returns a boolean or structured result indicating whether the provided string is a valid Kuwaiti IBAN: it must start with 'KW', be exactly 30 characters long, and pass the ISO 7064 mod-97 checksum algorithm.

## 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": [
    "KW64AAAA0000000000000000000000"
   ],
   "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/kuwaiti-iban-kw-mod-97-validator-8f3b5c22/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)