A website to VAT number API for developers
The same matching engine behind website2vat is available as an API, so you can turn a website into a VAT number automatically inside your own tools instead of using the browser form each time.
It’s a plain REST API alongside an MCP server, so both conventional backends and AI agents can send a domain or list of domains and get back company and VAT data in return.
- Send a domain or listPost a website, or a batch of websites, to the API — or connect an MCP client directly to the MCP server.
- The API resolves itEach domain is matched to a registered company and its VAT or registration number, the same lookup used on this site.
- Use the data in your systemPull the response into your own CRM, billing, or compliance workflow — no scraping or manual entry required.
What you get
REST and MCP access
A documented OpenAPI schema and an MCP server, so both code and AI agents can call the same lookup.
No scraping required
You get structured company and VAT fields directly — no need to crawl sites or parse registry pages yourself.
Same data as the manual tool
The API uses the identical BuiltWith VAT lookup as the website form, so results stay consistent either way.
Frequently asked questions
Is there a free way to try the company VAT number API?
Yes — the API documentation and OpenAPI schema are open to read, and small lists can be previewed for free through the web form first.
Can an AI agent use this instead of a person?
Yes, an MCP server is available for that purpose, alongside the plain REST API for conventional integrations.
Where do I find the technical details?
Full endpoint documentation is at /docs/api, with a machine-readable schema at /openapi.json.