# /vat — Open Data Proxy

Use GET /vat?value=… to validate a VAT number against the EU VIES service. Responses are cached for 24h.

## Purpose

Use GET /vat?value=… to validate a VAT number against the EU VIES service. Responses are cached for 24h.

Price: $0.01 USDC

## Request

```
GET /vat?value=NL852378361B01
```

## Input

- `value` — example: `NL852378361B01`

## Response

```json
{
  "valid": true,
  "input": "NL852378361B01",
  "registeredName": "Example B.V.",
  "country": "NL",
  "vatNumber": "852378361B01",
  "requestDate": "2026-01-01T00:00:00Z"
}
```

## Payment

No API key. Call once to receive `402 Payment Required` with the x402
terms, pay $0.01 USDC on Base Mainnet via https://x402.thesoulnetwork.eu, then send the 1-hour ticket as
`Authorization: Bearer <ticket>`.