# x402.orthogonal.com VAT Validation

> x402.orthogonal.com VAT Validation is a paid API for AI agents from x402.orthogonal.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).

Validates a VAT number and returns associated company details such as name and address.

## Facts

- Endpoint: GET https://x402.orthogonal.com/vat-validation/v1/validate
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-orthogonal-com-vat-validation-cfe4a0b6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CXT0_sTtU1dgpkJLNw-dc

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 x402-orthogonal-com-vat-validation-cfe4a0b6
```

Example prompt: Can you check if the VAT number DE345789012 is valid and tell me what company it belongs to?

## When to prefer this

Use this endpoint when you need to validate EU or UK VAT numbers for compliance, invoicing, or supplier/customer onboarding purposes. It combines validity checking with company detail enrichment in a single call, making it ideal for automated accounts payable, KYB flows, or tax compliance automation pipelines.

## Known failure modes

- Invalid or malformed VAT number format returns a validation failure response
- VAT number not found in the EU VIES or national database returns not-registered status
- Network or upstream registry timeout may produce an error or unavailable status
- Missing vat_number query parameter returns a 400 bad request

## How this service works

Validate a VAT number and get company details associated with it.

## Output

Returns whether the VAT number is valid, along with associated company details including the registered business name, address, and country code derived from the VAT prefix.

## 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"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "vat_number": {
       "type": "string",
       "description": "The VAT number to validate"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-orthogonal-com-vat-validation-cfe4a0b6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.orthogonal.com](https://www.zero.xyz/host/x402.orthogonal.com/llms.txt)