# EU VAT Check

> EU VAT Check is a paid API for AI agents from 402.com.tr, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Validates an EU VAT number offline against country prefix rules, national format patterns, and check-digit algorithms for 8 countries, distinguishing format-only validation from checksum-verified results.

## Facts

- Endpoint: GET https://402.com.tr/api/x402/vat-check
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/eu-vat-check-6cf5686c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DcwKJSmR6aW696V0tf8XU

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-vat-check-6cf5686c
```

Example prompt: Can you check whether the VAT number DE811252615 is correctly formatted and passes the German check-digit algorithm?

## When to prefer this

Use this endpoint when you need a fast, cheap, offline validation of an EU VAT number's format and check digit before making an expensive live VIES API call. It is ideal for pre-screening VAT numbers during onboarding, invoice processing, or form validation workflows. Prefer it when you only need to know if the number is structurally valid — not whether it is currently registered — and when you want the checksumChecked flag to distinguish strong from weak validation.

## Known failure modes

- Invalid or unrecognized country prefix returns format error
- VAT number fails national format regex — returns invalid format
- Check digit mismatch for supported countries (BE, DE, FR, IT, LU, NL, PL, PT) — returns failed checksum
- Missing or empty vat query parameter returns bad request
- Countries without a published check-digit algorithm return format-only result with checksumChecked=false

## How this service works

Validate an EU VAT number offline: country prefix, national format, and the published check-digit algorithm for the 8 countries that have one (BE, DE, FR, IT, LU, NL, PL, PT). The response says which of the two you got — checksumChecked distinguishes a verified number from a format-only pass, because they are not the same strength of answer. Registration is deliberately NOT claimed: only VIES can say whether a number is registered, and this endpoint does not call it.

## Output

Returns a validation result indicating whether the VAT number is valid according to format rules and, where applicable, the published check-digit algorithm. The checksumChecked flag distinguishes a checksum-verified result from a format-only pass, making clear the strength of the validation. Notably, this endpoint does not check VIES registration status — it only validates structure and check digits offline.

## 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"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "vat"
     ],
     "properties": {
      "vat": {
       "type": "string",
       "description": "VAT number"
      }
     }
    }
   },
   "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-vat-check-6cf5686c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 402.com.tr](https://www.zero.xyz/host/402.com.tr/llms.txt)