USt-IdNr Validator FAQs

Question 1

Why is 'Qualified Confirmation' important for German businesses?

Accepted Answer

For German businesses, qualified confirmation (qualifizierte Bestätigung) is the legally required proof under §6a Abs. 4 UStG. It provides 'Vertrauensschutz' (trust protection) when claiming zero-rate VAT on EU cross-border deliveries, protecting against fraud liability.

Question 2

How does this tool integrate with AI assistants like Claude?

Accepted Answer

The USt-IdNr Validator functions as an MCP (Model-Context-Protocol) server. This allows you to integrate it seamlessly with AI assistants like Claude, enabling you to validate VAT IDs, perform qualified confirmations, and process batches using natural language commands.

Question 3

Is an API key required to use the USt-IdNr Validator?

Accepted Answer

No, an API key is not required. The USt-IdNr Validator leverages the BZSt eVatR API, which is a free public government service, making it accessible without additional credentials.

Question 4

What is the USt-IdNr Validator?

Accepted Answer

The USt-IdNr Validator is a software tool designed for validating EU VAT IDs. It uses the official German BZSt eVatR REST API to offer features like qualified confirmation, batch processing, and support for all 27 EU countries.

Question 5

Can I validate multiple VAT IDs simultaneously?

Accepted Answer

Yes, the USt-IdNr Validator supports batch validation, allowing you to process up to 100 EU VAT IDs in parallel. This feature significantly streamlines the verification process for large customer lists or transactions.

USt-IdNr Validator

USt-IdNr Validator

主な機能

ユースケース

主な機能

ユースケース