# EU VIES VAT Number Validation

> EU VIES VAT Number Validation is a paid API for AI agents from api.aurenic.org, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-02).

Validates a European Union VAT number against the official EU VIES (VAT Information Exchange System) database

## Facts

- Endpoint: GET https://api.aurenic.org/vies/:vatNumber?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/eu-vies-vat-number-validation-feed36e1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ILbX4N8Hfv1Y-KsiD2_CK

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 eu-vies-vat-number-validation-feed36e1
```

Example prompt: Can you check if the VAT number DE123456789 is valid in the EU VIES system?

## When to prefer this

Use this endpoint when you need to programmatically verify EU VAT numbers for tax compliance, invoice zero-rating, or supplier/customer onboarding workflows. It is the authoritative source as it queries the official EU VIES system directly. Prefer this over manual lookups or third-party aggregators when you need real-time, authoritative VAT status for B2B transactions within the EU.

## Known failure modes

- Invalid VAT number format returns validation error
- VIES service temporarily unavailable (EU system has known downtime periods)
- Country code not recognized or not an EU member state
- VAT number does not exist in VIES registry
- Rate limit or payment failure for x402 micropayment

## How this service works

EU VIES VAT number validation

## Output

Returns the VIES validation result for the given VAT number, including whether the VAT number is currently valid/active, the registered business name, and the registered business address as stored in the EU VIES database.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "vatNumber"
     ],
     "properties": {
      "vatNumber": {
       "type": "string"
      }
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/eu-vies-vat-number-validation-feed36e1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.aurenic.org](https://www.zero.xyz/host/api.aurenic.org/llms.txt)