The VAT Validation API checks whether an EU VAT number is valid. Send the number with its two-letter country prefix, get back true or false.
Use it before you invoice. A wrong VAT number on a B2B invoice means the reverse charge does not apply, and the tax becomes your problem rather than your customer's. Checking at signup costs one call. Finding out at audit costs considerably more.
It fits three places in most products. On the signup or checkout form, when a business customer enters their VAT number. On supplier onboarding, before the first payment goes out. And as a periodic job over stored records, because VAT registrations get cancelled and nobody tells you.
Need more than a yes or no? The VAT Company Lookup API returns the registered company name and address behind the number, which is what you need when the invoice has to carry the legal entity. Checking a list rather than one number? The Validate EU VAT Batch API takes up to 10 per request.
Validate a VAT number by sending it in a simple JSON body.
curl -X POST "https://api.eu.apyhub.com/apyhub/validate-vat-number" \
-H "apy-token: $APY_TOKEN" \
-H "Content-Type: application/json" \
-d '{"vat":"NL862735944B01"}'Returns a JSON object with a data boolean field — true when the VAT number is valid, false otherwise.
{
"data": true
}Loading your default key…Validates a VAT number submitted in the request body and returns a boolean result indicating whether it is valid.
| Parameter | Type | Mandatory | Description |
|---|---|---|---|
| vat | String | Yes | VAT number including a 2-letter country code prefix. |
Returns a JSON object with a data boolean field — true when the VAT number is valid, false otherwise.
| Parameter | Type | Mandatory | Description |
|---|---|---|---|
| data | Boolean | Yes | Validation result for the submitted VAT number. |
bad_requestRequired parameter missing or malformed body.
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