# IBANTEST

> IBANTEST is a free IBAN/BIC validation and calculation service for SEPA and international bank accounts, with a REST API and an MCP server for programmatic and AI-agent access. The site is bilingual (German `/de/`, English `/en/`); German is the primary market.

IBANTEST validates IBANs (syntax, check digit, and — where national registries provide the data — bank/account-number checks), calculates IBANs from a bank code and account number, looks up BIC/SWIFT codes, and exposes this functionality through a REST API and a Model Context Protocol (MCP) server intended for AI agents and IDE assistants (Cursor, Claude Desktop, custom agents).

## Core tools

- [IBAN prüfen (Validator)](https://www.ibantest.com/de/): validate an IBAN's syntax, check digit, and (for supported countries) bank data.
- [IBAN-Rechner](https://www.ibantest.com/de/iban-rechner): calculate an IBAN from a national bank code and account number.
- [BIC Suche](https://www.ibantest.com/de/bic-suche): look up a bank's BIC/SWIFT code by bank name or country.
- [IBAN-Länder / Service-Abdeckung](https://www.ibantest.com/de/iban-laender): list of supported countries and per-country IBAN structure pages (format, length, check-digit method).

## API & MCP for AI agents

- [REST API documentation](https://api.ibantest.com/index.html): full REST API reference for IBAN validation, calculation, and bank lookups. Requires a free account and API token, see [Preise](https://www.ibantest.com/de/preise).
- [MCP-Schnittstelle](https://www.ibantest.com/de/ki-mcp-schnittstelle): how to connect an MCP-capable client (Cursor, Claude Desktop, custom HTTP client) to the IBANTEST MCP server at `https://api.ibantest.com/mcp`. Lists all available tools (`iban_validate`, `iban_calculate_de`/`_at`/`_be`/`_cz`/`_es`/`_it`/`_li`/`_lu`/`_mc`/`_nl`, `bank_validate_bic`, `bank_find`, `account_get_credits`) with their parameters. Every tool call requires a `token` parameter obtained via free [Registrierung](https://www.ibantest.com/de/registrieren).
- [Entwickler-Übersicht](https://www.ibantest.com/de/entwickler): overview of integration options (REST API, PHP client, WordPress/WooCommerce plugin).
- [WordPress/WooCommerce-Plugin](https://www.ibantest.com/de/wordpress-woocommerce): SEPA direct debit + IBAN validation plugin for WooCommerce checkout.

## Guides & reference

- [Was ist eine IBAN?](https://www.ibantest.com/de/was-ist-eine-iban): explanation of the IBAN standard.
- [Wie ist eine IBAN aufgebaut?](https://www.ibantest.com/de/iban-pruefziffer): IBAN structure and check-digit calculation.
- [Was ist der BIC?](https://www.ibantest.com/de/bic): explanation of the BIC/SWIFT code.
- [Wie kann man sich seine IBAN merken?](https://www.ibantest.com/de/wie-iban-merken): tips for remembering an IBAN.

## Company

- [Preise](https://www.ibantest.com/de/preise): pricing for the paid API/credits tiers (free tier available).
- [Kontakt](https://www.ibantest.com/de/kontakt): contact form.
- [Impressum](https://www.ibantest.com/de/impressum): legal notice (German law requirement).

## Notes

- Every page above is also available in English under the `/en/` path (e.g. `https://www.ibantest.com/en/` for the homepage); use `hreflang` alternates on each page to find the matching locale.
- Full URL list: [sitemap](https://www.ibantest.com/sitemap.xml).