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handel.halowerk.com VAT Resolve
x402
handel.halowerk.com VAT Resolve is a paid API for AI agents from handel.halowerk.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).
Validates a VAT number against VIES and determines the correct VAT treatment (domestic, intra-community reverse charge, B2C distance, or export) for a given supplier-customer transaction in a single call.
Price / call$0.002
Success—
StatusUnknown
How this service works
Two answers in one call. Validation: the number is checked against the VIES service of the member state that issued it, with the consultation date returned. Treatment: given the supplier country, the customer country and whether the customer is a business, it states whether the supply is domestic with the local rate, an intra-community B2B supply where the reverse charge shifts the liability to the customer, a B2C supply taxed where the customer sits, or an export outside the EU.
Output
Returns two sets of results: (1) VAT validation — whether the number is currently registered in VIES, the member state that issued it, and the consultation timestamp; (2) VAT treatment — one of domestic (local rate applies), intra-community B2B (reverse charge, liability shifts to customer), B2C distance supply (taxed at customer location), or export outside the EU (zero-rated). The treatment is determined from the supplier country, customer country, and business status.
Example use cases
Pre-invoice VAT check for EU B2B sale
“Before I issue this invoice, validate VAT number NL856787894B01 and tell me the correct tax treatment for a Dutch supplier selling to an Italian business customer — do I apply reverse charge or charge Dutch VAT?”
B2C cross-border VAT treatment for e-commerce
“I'm a Spanish e-commerce seller shipping to a French consumer — they are not a business. Can you validate their situation and tell me whether I charge Spanish VAT, French VAT, or something else?”
Export outside EU — confirm zero-rating
“We're a Polish company selling to a UK business post-Brexit. Check VAT number GB123456789 and confirm whether this is an EU export that should be zero-rated and what the correct VAT treatment is.”
Technical details
Endpoint
POSThttps://handel.halowerk.com/v1/vat-resolveWhen to prefer
Use this endpoint when you need both VAT number validation and VAT treatment determination in a single API call for EU cross-border transactions. It is the right choice for automating invoice generation, quoting workflows, or compliance checks where you need to know both whether a customer's VAT number is legitimate and which tax regime applies. Prefer it over separate VIES lookups combined with manual treatment logic, especially when handling B2B, B2C, and export scenarios programmatically.
Side effects
- VIES service temporarily unavailable — member state's registry may be offline at the time of consultation
- Invalid VAT number format — returns validation error before querying VIES
- Unknown or unsupported country code — treatment logic cannot be applied
- VAT number not found in VIES — returns invalid status with consultation date
- Network timeout if VIES member state is slow to respond
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| vat_number | string | VAT number with country prefix, e.g. DE811907980. |
| supply_type | string | What is being supplied. |
| supplier_country | string | ISO country code of the supplier, for the treatment question. |
| customer_is_business | boolean | Whether the customer is a business (B2B) or a consumer (B2C). |
Tags
x402
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