KVKBase

Data API, 2025

KVKBase delivers Dutch company data through one API and a widget: KVK data, addresses, VAT numbers and VIES validation in a single call.

Visit kvkbase.nl Discuss a similar problem
Role
Design and build
Stack
Astro, serverless API, edge cache
Status
Live
Type
Product
Request KVK number or name API cached at the edge One response KVK data Address VAT number VIES valid Every hour Harvester Stored data Or through the widget: one script tag
Schematic with sample data

The problem

Looking up and maintaining company data costs time and money per request, and the sources enforce strict limits.

Approach

One REST API and a widget added with one script tag, with caching at the network edge. An hourly harvester keeps stored data current.

Public company pages also make the data findable in search engines. Since November 2026 there is Belgian data and a French site as well.

Result

KVKBase is live at kvkbase.nl in Dutch, English and French and is under active development.

Worth noting

More for KVKBase

The kvkbase.nl home page

WebsiteWebsite

KVKBase

The KVKBase site: built in Astro, in three languages, with documentation and public company pages that make the data findable.

Facing something similar?

Describe briefly what is done by hand today. You get an honest answer, even if the answer is that it does not pay off.

Get in touch WhatsApp