Look up VAT ID and registry numbers API

Validate a supplied EU VAT ID with VIES and/or search GLEIF by company name for official registration numbers. Does not invent a VAT ID when VIES has none, and does not call UK Companies House.

The Look up VAT ID and registry numbers operation is part of the Company Intelligence API on BRAINIAC.software. Validate a supplied EU VAT ID with VIES and/or search GLEIF by company name for official registration numbers. Does not invent a VAT ID when VIES has none, and does not call UK Companies House. It is exposed as POST /api/v1/company-intelligence/vat-id-lookup and priced at $0.04 USDC on Base. Payment uses the x402 exact scheme: an unpaid call returns HTTP 402 with payment requirements; after paying the exact USDC amount, retry the same request with a payment-signature header and Idempotency-Key. No account and no API key are required. Data sources for this product: GLEIF API for LEI records, entity profiles, and ownership relationships (api.gleif.org). SEC EDGAR public API for company submissions, XBRL financial facts, and filings (data.sec.gov). EU VIES REST check-vat-number for supplied VAT IDs. Limitations: GLEIF covers entities with LEIs; not all private companies worldwide have LEIs. SEC EDGAR covers only entities required to file with the SEC. Do not merge companies based on ambiguous name matches; preserve source identifiers. This product returns public company intelligence. It is not a restricted-party screening engine. vat-id-lookup validates a supplied VAT ID via VIES and may return GLEIF registration numbers; it does not invent VAT IDs from names alone. Outputs are compliance prechecks, drafts, or data lookups for human review. They are not official determinations, legal advice, identity confirmation, or certified filings. Related operations in this group include Search companies, Get company profile, Get company ownership, Get company financials. Open the group documentation for the full request schema, field notes, and response examples before integrating.