# Macedonian IBAN Validator (MK, length 19)

> Macedonian IBAN Validator (MK, length 19) is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.008/call, status unknown (last checked 2026-10-02).

Validates whether a given string is a correctly formatted, mod-97-valid Macedonian (MK) IBAN of exactly 19 characters

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/check-iban-mk?utm_source=zero.xyz
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/macedonian-iban-validator-mk-length-19-18635273
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_u4Q2XR8eFrWJp35mkeUTE

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 macedonian-iban-validator-mk-length-19-18635273 -d '<json body>'
```

Example prompt: Can you check whether MK07300000000042425 is a valid Macedonian IBAN — make sure it passes the mod-97 checksum and is the right 19-character MK format?

## When to prefer this

Use this endpoint specifically when you need to validate a Macedonian (MK) IBAN with a required length of 19 characters and mod-97 checksum verification. Prefer the free sandbox endpoint /v1/sandbox/check-iban-mk first for testing. Use sibling endpoints for other country codes (NL, LB, MC, etc.).

## Known failure modes

- IBAN string missing or empty — input validation error
- IBAN length not exactly 19 characters — fails format check
- Country code not MK — wrong endpoint used
- Mod-97 checksum fails — invalid IBAN returned
- Malformed request body — HTTP 400
- Payment not provided — HTTP 402 payment required

## How this service works

Call when an agent needs whether an IBAN is a mod-97-valid MK number of length 19. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/check-iban-mk first.

## Output

A boolean or structured response indicating whether the submitted string is a valid mod-97 Macedonian IBAN of the required 19-character length, along with any relevant validation details or error reasons.

## 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": [
    "MK63AAAA00000000000"
   ],
   "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/macedonian-iban-validator-mk-length-19-18635273/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)