# IBAN Validator with BBAN Decomposition and BIC Check

> IBAN Validator with BBAN Decomposition and BIC Check is a paid API for AI agents from tools.halowerk.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).

Validates an IBAN against ISO 13616/ISO 7064 with mod 97-10 checksum verification across 74 countries, decomposes BBAN into sort code and account number for 11 countries, reports SEPA membership, and optionally validates an accompanying BIC for format and country consistency.

## Facts

- Endpoint: POST https://tools.halowerk.com/v1/iban/check
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/iban-validator-with-bban-decomposition-and-bic-check-d1817dbe
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_72JMUxbDABux1RPNPWKuM

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-validator-with-bban-decomposition-and-bic-check-d1817dbe -d '<json body>'
```

Example prompt: Can you validate this IBAN for me — DE89370400440532013000 — and also check whether BIC COBADEFFXXX matches it, and tell me if it's part of SEPA?

## When to prefer this

Choose this endpoint when you need ISO-compliant structural IBAN validation with checksum verification, SEPA status, and optional BIC cross-checking in a single call. Prefer it over simple regex checks when you need authoritative mod 97-10 verification across 74 country formats and BBAN decomposition for downstream payment system field mapping. Note it does not confirm account existence or solvency.

## Known failure modes

- Invalid IBAN format — wrong length for the country code or non-alphanumeric characters
- Checksum failure — mod 97-10 does not equal 1
- Unknown country prefix — not in the 74-country table
- BIC country mismatch — BIC country code differs from IBAN country code
- BIC format invalid — does not conform to the standard 8 or 11 character BIC structure
- BBAN decomposition not available — country is not among the 11 supported for breakdown

## How this service works

Prueft die IBAN nach ISO 13616 und ISO 7064 mit Pruefsumme mod 97-10 gegen die Laengentabelle von 74 Laendern, zerlegt die BBAN fuer elf Laender in Bankleitzahl und Kontonummer, meldet SEPA-Zugehoerigkeit und prueft eine mitgegebene BIC auf Format und Landesgleichheit. Trifft keine Aussage zu Existenz oder Deckung.

## Output

Returns whether the IBAN is valid according to ISO 13616 and ISO 7064 mod 97-10 checksum rules, the matched country from the 74-country length table, SEPA membership status, decomposed BBAN fields (bank sort code and account number) for supported countries, and if a BIC was supplied, its format validity and whether its country code matches the IBAN. Does not verify account existence or available funds.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "bic": {
   "type": "string",
   "description": "BIC zum Abgleich, optional"
  },
  "iban": {
   "type": "string",
   "description": "IBAN mit oder ohne Leerzeichen"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/iban-validator-with-bban-decomposition-and-bic-check-d1817dbe/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tools.halowerk.com](https://www.zero.xyz/host/tools.halowerk.com/llms.txt)