# IBAN MT Mod-97 Validity Checker

> IBAN MT Mod-97 Validity Checker is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.009/call, status unknown (last checked 2026-10-02).

Validates whether a given string is a mod-97-valid IBAN of the Maltese (MT) format with a length of 31 characters

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/check-iban-mt?utm_source=zero.xyz
- Price: $0.009/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/iban-mt-mod-97-validity-checker-7f789183
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4nxqnG8E-sHGlMyexGoAK

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 iban-mt-mod-97-validity-checker-7f789183 -d '<json body>'
```

Example prompt: Can you check whether the IBAN MT84MALT011000012345MTLCAST001S is a valid Maltese IBAN — specifically that it passes mod-97 and is exactly 31 characters long?

## When to prefer this

Use this endpoint when you specifically need to validate a Maltese (MT) IBAN against the mod-97 algorithm and length constraint of 31 characters. Prefer this over generic IBAN validators when you need a deterministic, no-LLM, no-network computation with guaranteed accuracy. Try the free POST /v1/sandbox/check-iban-mt endpoint first for testing before incurring the $0.009 USDC charge.

## Known failure modes

- Input string is empty or missing — returns validation error
- IBAN is not exactly 31 characters — fails length check
- IBAN country code is not MT — may reject as out of scope
- Mod-97 checksum fails — returns invalid
- Malformed input with non-alphanumeric characters — parse error
- Payment of $0.009 USDC not provided — returns 402 Payment Required

## How this service works

Call when an agent needs whether an IBAN is a mod-97-valid MT number of length 31. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/check-iban-mt first.

## Output

Returns whether the provided string is a valid Maltese (MT) IBAN: passes mod-97 checksum algorithm and is exactly 31 characters in length. Likely returns a boolean or status field indicating validity, plus potentially an error or reason field if invalid.

## 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": [
    "MT02AAAA00000000000000000000000"
   ],
   "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/iban-mt-mod-97-validity-checker-7f789183/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)