agosint EU VAT Number Validation via VIES

x402

agosint EU VAT Number Validation via VIES is a paid API for AI agents from agosint.shveik.dev, paid per call via x402, $0.015/call, status unknown (last checked 2026-10-14).

Validates an EU VAT number against the official VIES service, returning registration status, registered company name, address, and optional name-match result.

Price / call$0.015

Seller volume →—

Success—

StatusUnknown

How this service works

Company and domain due diligence for AI agents: official registers, sanctions lists and domain records, signed. Pay per call in stablecoins, no account.

Output

Returns a JSON object with: validity boolean, registered company name, registered address, country code, VAT number, source (VIES), timestamp of check, name_match result ('match', 'mismatch', or 'unknown') when expected_name is provided, attribution note, and a payment receipt.

Example use cases

Supplier onboarding VAT check

“Before we add this new Czech supplier to our system, can you verify their VAT number CZ45274649 against VIES and check if the registered name matches 'ČEZ, a.s.'?”

Invoice compliance verification

“We just received an invoice from a company claiming VAT number DE123456789 — can you validate it in VIES and tell me if it's active and what name is registered to it?”

Automated KYB for new business partner

“As part of our know-your-business checks, please validate VAT number FR82542065479 and confirm whether the registered address and name match 'Société Générale'.”

Technical details

Endpoint

POSThttps://agosint.shveik.dev/v1/x402/vat?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need authoritative, cryptographically signed VAT validation direct from the EU VIES system, especially in automated KYB/KYC pipelines, invoice processing workflows, or supplier onboarding where you need no-account, pay-per-call verification without managing API subscriptions.

Side effects

VIES service temporarily unavailable — returns error with source details
Invalid VAT format — returns error before querying VIES
VAT number not found in VIES — returns valid: false
Name mismatch — returns name_match: 'mismatch' when expected_name doesn't match registered name
Payment failure — x402 payment not confirmed, request rejected

Input

Schema · Request body

Field	Type	Description
vat	string
expect_name	string
requester_vat	string

Output

Schema · Response

{
  "type": "json",
  "example": {
    "name": "ČEZ, a.…",
    "note": "The resu…",
    "valid": true,
    "number": "45274649",
    "schema": "agosint.…",
    "source": "vies",
    "address": "Duhová 1…",
    "country": "CZ",
    "receipt": {},
    "checked_at": "2026-10-…",
    "name_match": "match",
    "attribution": "Result o…"
  }
}

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