# Andorra IBAN Mod-97 Validator

> Andorra IBAN Mod-97 Validator 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 string is a mod-97-valid Andorra (AD) IBAN of exactly 24 characters

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/check-iban-ad?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/andorra-iban-mod-97-validator-2a22aa98
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_j5eG1OlroFNxhFNQm-ZtI

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 andorra-iban-mod-97-validator-2a22aa98 -d '<json body>'
```

Example prompt: Can you check whether AD1200012030200359100100 is a valid Andorran IBAN — specifically that it passes the mod-97 checksum and is exactly 24 characters long?

## When to prefer this

Use this endpoint when you need to specifically validate an Andorra (AD) IBAN for both structural correctness (24-character length, AD prefix) and cryptographic checksum integrity (mod-97). Prefer the free sandbox endpoint POST /v1/sandbox/check-iban-ad first during development or testing to avoid the $0.002 USDC cost. Choose this over generic string validators or country-agnostic IBAN libraries when you need a dedicated, deterministic, paid service with guaranteed correctness for the AD format.

## Known failure modes

- Input string is empty or missing — request rejected
- IBAN length is not exactly 24 characters — returns invalid
- Country code is not AD — returns invalid or out-of-scope
- Mod-97 checksum fails — returns invalid with checksum error
- Malformed input (non-alphanumeric characters) — validation error
- Network timeout or service unavailability — HTTP 5xx error

## How this service works

Call when an agent needs whether an IBAN is a mod-97-valid AD number of length 24. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/check-iban-ad first.

## Output

Returns whether the provided string is a valid Andorra (AD) IBAN: confirms it is exactly 24 characters, starts with the AD country code, and passes the ISO 7064 mod-97-10 checksum algorithm. Likely returns a boolean validity flag and possibly a reason for failure.

## 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": [
    "AD57AAAA0000000000000000"
   ],
   "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/andorra-iban-mod-97-validator-2a22aa98/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)