# KZ IBAN Validator (mod-97)

> KZ IBAN Validator (mod-97) is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-29).

Validates whether a given IBAN is a structurally correct, mod-97-valid Kazakhstan (KZ) bank account number of exactly 20 characters.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/check-iban-kz?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/kz-iban-validator-mod-97-907e1bec
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3nyLYPzDIcDcgmR8oZac8

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 kz-iban-validator-mod-97-907e1bec -d '<json body>'
```

Example prompt: Can you check whether KZ75125KZT0000000001 is a valid Kazakhstan IBAN — I need to confirm it passes the mod-97 checksum before I send a wire transfer.

## When to prefer this

Use this endpoint when you specifically need to validate a Kazakhstan (KZ) IBAN and require mod-97 checksum verification. Prefer the free sandbox endpoint POST /v1/sandbox/check-iban-kz first during development. For IBANs from other countries (LT, LU, LV, MK, MR, PK, PS), use the sibling country-specific endpoints on the same host.

## Known failure modes

- Input string is not 20 characters — validation returns false
- Country code is not 'KZ' — fails country-specific check
- Mod-97 remainder is not 1 — checksum failure returned
- Empty or missing value field — likely 400 bad request
- Non-alphanumeric characters in IBAN — fails structural check
- Payment of $0.002 USDC not attached — 402 Payment Required response

## How this service works

Call when an agent needs whether an IBAN is a mod-97-valid KZ number of length 20. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-iban-kz first.

## Output

Returns a boolean validity result indicating whether the submitted string is a properly structured Kazakhstan (KZ) IBAN of exactly 20 characters that passes 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": [
    "KZ06AAAA000000000000"
   ],
   "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/kz-iban-validator-mod-97-907e1bec/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)