# VAT Number Validation

> VAT Number Validation is a paid API for AI agents from anibalb.duckdns.org, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-31).

Validates a VAT (Value Added Tax) number for a given country and returns the associated business name and validity status

## Facts

- Endpoint: GET https://anibalb.duckdns.org/x402/vat-check?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vat-number-validation-bcd7dd34
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VfYdG9pj4yF6W88GG6jTx

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 vat-number-validation-bcd7dd34
```

Example prompt: Can you check if the German VAT number DE123456789 is valid and tell me what company it belongs to?

## When to prefer this

Use this endpoint when you need a fast, pay-per-call VAT number validation without managing API keys or subscriptions. Ideal for agent workflows that need to verify EU or international VAT registrations on-demand, especially when integrating into invoicing, vendor onboarding, or tax compliance automation pipelines.

## Known failure modes

- Invalid or malformed VAT number format returns valid: false
- Unsupported country code may return an error or null result
- VAT lookup service unavailability causes request failure
- VAT number exists but is deregistered or expired returns valid: false
- Missing required query parameters (country or vat) results in a 400-level error
- Payment failure via x402 prevents the request from completing

## How this service works

Public data and utility APIs paid per call in USDC on Base (x402). No accounts, no API keys. 174 routes: crypto/equity data, onchain reads, DNS/email/security intel, geo/weather, x402 payment diagnostics, dev utilities and more.

## Output

Returns a JSON object with a 'valid' boolean indicating whether the VAT number is registered and active, and a 'name' string containing the registered business name associated with the VAT number.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "country",
      "vat"
     ],
     "properties": {
      "vat": {
       "type": "string"
      },
      "country": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "name": "Example GmbH",
  "valid": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vat-number-validation-bcd7dd34/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from anibalb.duckdns.org](https://www.zero.xyz/host/anibalb.duckdns.org/llms.txt)