EU VAT Number Validation (VIES Registry)

omnial/x402-vat-validate

Given an EU VAT number with its country prefix, validates it against the EU's official VIES registry and returns whether it is currently valid, plus the registered company name and address on file when the number resolves. Results are cache-backed, so a repeated lookup can come back instantly and the response says whether it did.

activeper callv3

Price

Up to $0.0325 per call; you pay what the call used

You pay the price shown. If a call turns out to cost more than its quote, you pay the actual price, capped at twice the quote. No monthly minimum. Top-ups start at $5.00.

Data source

VIES

Data from VIES.

Use it

Your AI assistant does the work: it finds this tool, shows you the price first, runs it, and you are charged when the run finishes. There is nothing to set up for this tool in particular.

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For developers: the calls your assistant makes

agent

// 1. search: find the tool
omnial_search({ query: "what you need" })

// 2. inspect: price and input schema
omnial_inspect({ tool: "omnial/x402-vat-validate" })

// 3. learn: read the usage guide at runtime
omnial_learn({ tool: "omnial/x402-vat-validate" })

// 4. run: price the exact call first, then run it
omnial_execute({ tool: "omnial/x402-vat-validate", input: { /* see input_schema */ }, dry_run: true })
omnial_execute({ tool: "omnial/x402-vat-validate", input: { /* ... */ } })

// 5. settle: the call is charged when it finishes, nothing to do

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Pricing

Every charge this tool can incur.

Charge	Price
Per call	$0.0325

Updated: Nov 6, 2026

Input and output schemas

Input schema

input_schema.json

{
  "type": "object",
  "required": [
    "vat_number"
  ],
  "properties": {
    "vat_number": {
      "type": "string",
      "description": "EU VAT number including country prefix (e.g. SE556703748501)"
    }
  },
  "additionalProperties": false
}

Output schema

output_schema.json

{
  "type": "object",
  "properties": {
    "valid": {
      "type": "boolean",
      "description": "Whether VIES currently reports this VAT number as valid."
    },
    "cache_hit": {
      "type": "boolean",
      "description": "Present only when this exact lookup was served from cache rather than a fresh VIES call -- absent on a fresh lookup, so treat it as optional, not guaranteed present on every response."
    },
    "cached_at": {
      "type": "string",
      "description": "ISO 8601 timestamp of when the cached result was originally fetched. Present only alongside `cache_hit`; absent on a fresh lookup."
    },
    "vat_number": {
      "type": "string",
      "description": "The VAT number exactly as submitted, echoed back."
    },
    "company_name": {
      "type": "string",
      "description": "The registered company name on file with VIES. Observed as an empty string on a VAT number VIES rejects as invalid."
    },
    "country_code": {
      "type": "string",
      "description": "Two-letter EU country code parsed from the submitted VAT number."
    },
    "request_date": {
      "type": "string",
      "description": "The date VIES processed this request, with UTC offset (e.g. '2026-09-19+02:00')."
    },
    "cache_age_hours": {
      "type": "number",
      "description": "How many hours old the cached result is. Present only alongside `cache_hit`, on the same cache-backed responses; absent on a fresh lookup."
    },
    "company_address": {
      "type": "string",
      "description": "The registered company address on file with VIES, as a single multi-line string. Observed as an empty string on a VAT number VIES rejects as invalid."
    }
  },
  "description": "The VAT validation result.",
  "additionalProperties": true
}