402utils Supplier Vetting Check

x402

402utils Supplier Vetting Check is a paid API for AI agents from 402utils.com, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-09).

Validates a supplier's legitimacy by checking VAT (VIES), IBAN structure (mod-97), domain status (RDAP), and LEI record (GLEIF) in parallel in a single paid API call.

Price / call$0.006

Seller volume →—

Success—

StatusUnknown

How this service works

Micro API utilities for AI agents, priced per call and paid in USDC over the x402 protocol. PDF, screenshot, OG-image and more — no signup, no keys.

Output

Returns per-field validation results for each provided identifier (VAT validity and company name via VIES, IBAN structural validity via mod-97+BBAN, domain registration status via RDAP, LEI legal name/status/parent via GLEIF), plus a country field and a summary.allProvidedValid boolean that is true only when every provided check passed. If attest=1, includes an Ed25519-signed attestation of the result. Returns 503 (no charge) if all checks fail technically.

Example use cases

Vendor onboarding compliance check

“I need to add a new vendor to our approved list. Can you validate their VAT number DE289123456, IBAN DE89370400440532013000, and domain vendor-example.de to make sure they're legitimate before we set up the contract?”

Invoice payment due diligence

“This invoice came in from an existing supplier with a different IBAN than usual. Can you quickly verify the VAT number FR23334175221, check if the IBAN FR1420041010050500013M02606 is valid, and confirm their domain is still active at supplier-fr.fr?”

Audit-ready supplier verification

“Our auditors want proof that we vetted this new partner. Can you check their LEI 5493001KJTIIGC8K1012, VAT ES27123456789, IBAN ES9121000418450200051332, and domain partner-spain.es — and include a signed attestation I can attach to our audit file?”

Technical details

Endpoint

POSThttps://402utils.com/v1/supplier-check?utm_source=zero.xyz

When to prefer

Use this endpoint when you need to vet a business supplier by cross-checking multiple identity signals (VAT, IBAN, domain, LEI) in a single call rather than hitting each registry separately. Ideal for KYB (Know Your Business) workflows, vendor onboarding, invoice validation, or audit-required procurement processes where a signed attestation (attest=1) is needed. Prefer over building individual checks when you want a unified allProvidedValid summary and per-field breakdown in one round trip.

Side effects

503 returned with no charge when all checks fail technically (e.g. upstream VIES/GLEIF/RDAP unavailable)
Per-field status may indicate invalid even if format is correct (e.g. VAT deregistered)
IBAN validation is structural only (mod-97 + BBAN format), not account existence
Domain check reflects RDAP registration status, not operational status
summary.allProvidedValid is false if any single provided field fails its check
Invalid or malformed LEI returns an error status for that field only

Input

Schema · Request body

Field	Type	Description
lei	string	20-char LEI to resolve via GLEIF, e.g. 529900D6BF99LW9R2E68.
vat	string	Full EU VAT number, e.g. IE6388047V.
iban	string	IBAN to validate structurally.
attest	string	Set to 1 for an Ed25519-signed attestation of the result (audit trail).
domain	string	Domain to look up via RDAP, e.g. example.com.

Output

Schema · Response

{
  "type": "json",
  "example": {
    "vat": {
      "name": "GOOGLE IRELAND LIMITED",
      "valid": true,
      "status": "ok",
      "vatNumber": "6388047V",
      "countryCode": "IE"
    },
    "iban": {
      "valid": true,
      "status": "ok",
      "country": "IE"
    },
    "domain": {
      "status": "ok",
      "registrar": "MarkMonitor Inc.",
      "supported": true,
      "registered": true
    },
    "country": {
      "name": "Ireland",
      "alpha2": "IE",
      "status": "ok"
    },
    "summary": {
      "checkedAt": "2026-07-05T12:00:00.000Z",
      "allProvidedValid": true
    }
  }
}

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