# AgentShelf IBAN VA Validator

> AgentShelf IBAN VA Validator is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-02).

Validates whether a given IBAN is a mod-97-valid Virtual Account (VA) number of exactly 22 characters in length

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/check-iban-va?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-iban-va-validator-617e30a4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-Pw07LV2E4Surcz-4-UDu

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 agentshelf-iban-va-validator-617e30a4 -d '<json body>'
```

Example prompt: Can you check whether the IBAN 'GB29NWBK60161331926819' is a valid 22-character Virtual Account number that passes mod-97 validation?

## When to prefer this

Use this endpoint when you need a deterministic, rule-based check that a specific IBAN both conforms to the 22-character Virtual Account length constraint AND passes the standard mod-97 checksum — without needing a live bank lookup or registry verification. Prefer the free sandbox endpoint (/v1/sandbox/check-iban-va) for testing; use this paid endpoint in production flows where reliability matters.

## Known failure modes

- IBAN string shorter or longer than 22 characters returns invalid result
- Input string contains non-alphanumeric characters causing parse failure
- Mod-97 check fails for IBANs with incorrect check digits
- Empty or missing value field causes a request validation error
- Malformed JSON body may result in a 400 Bad Request

## How this service works

Call when an agent needs whether an IBAN is a mod-97-valid VA number of length 22. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/check-iban-va first.

## Output

Returns whether the submitted IBAN string is a valid Virtual Account number — specifically confirming it is exactly 22 characters long and passes the mod-97 checksum algorithm used in IBAN validation.

## 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": [
    "VA77AAAA00000000000000"
   ],
   "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/agentshelf-iban-va-validator-617e30a4/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)