Frequently asked questions
Validate eu vat number vies?
You get whether the number is registered for VAT on the day of the check, the step before a reverse-charge invoice. Call check_vat_number with country and vatNumber, adding requesterCountry and requesterVatNumber for a consultation number.
The result is valid only for the day it is run. The check covers EU member states and Northern Ireland (XI), not GB. A name appears only for legal entities, and Germany and Spain publish no name. A prefix naming another country is refused. It gives no VAT rates and does not work out the reverse charge. Tool: check_vat_number on https://eubusiness.openkrill.app/mcp.
Find or look up a company lei?
You get each matching entity's LEI, legal name, status, legal form code, country, city, registration number and renewal dates. Call find_company_lei with the company name, a country code to narrow it, or the 20-character LEI.
Sole proprietors are left out, and companies without an LEI, which includes most small businesses, will not appear. Results show the LEI record, not financial or credit information. Check the status field to see whether an LEI is still active. Tool: find_company_lei on https://eubusiness.openkrill.app/mcp.
Look up french or norwegian company in business register?
You get the legal name, registration number, legal form, status, registration date, address, activity code and, where published, size. Call lookup_company_registry with country FR or NO and a company name or registration number (SIREN or organisation number).
Only France (Sirene) and Norway (Enhetsregisteret) are covered. The SIREN on a Kbis extract finds the register record, not the extract itself. Sole proprietors are left out, and a register can lag behind a change by days, so check important details on the register. Tool: lookup_company_registry on https://eubusiness.openkrill.app/mcp.
Which company is behind this domain?
You get the legal name, country, registration number, size band and company age, each with a source link, the date read and a confidence level. Call company_from_domain with the domain, such as stripe.com.
Facts it could not find are listed under unknown with the reason. Free mail providers and free subdomains give no company, and no person is named. Outside France and Norway, size and age may be unknown. Tool: company_from_domain on https://eubusiness.openkrill.app/mcp.
Run it yourself
This page does not return live data. A call to check_vat_number was posted to the live server on 2026-10-17, and the install pages show it. Call the tool on the server for current data. The server is EU Business & VAT Checker at https://eubusiness.openkrill.app/mcp, with no key. Install steps: ChatGPT, Claude, Cursor, VS Code, Pi. The full tool list is in the install guides.