Check a Dutch company by API: KVK and the CIR

Handelsregister (KVK) and Centraal Insolventieregister · partly covered · checked 11 November 2026

The official route

A Dutch company check needs two registers.

The trade register (Handelsregister) is kept by KVK. It has an API on subscription. As we recorded it on 2026-11-09: EUR 6.40 a month plus EUR 0.02 per profile call, and search is free. That gets you status, legal form, addresses and officers for your own use. KVK also has open datasets under CC BY 4.0. We have not built on those.

Insolvency is in the Centraal Insolventieregister (CIR) of the Rechtspraak, at insolventies.rechtspraak.nl. It has a public search for legal persons, for which the FAQ allows at most 10 requests per second. It also has a webservice under a free subscription. The subscription terms (checked 2026-11-08) allow passing data on to third parties, also edited, and limit the use to informing trade parties about insolvency.

Where it gets hard

KVK's terms of use say "Doorgifte is niet toegestaan": on a plain subscription you may not pass the data on. That takes the status of recognised KVK partner ("erkend KVK-partner"), and pure resale is excluded there too.
KVK's API agreement says test requests are billed as well.
The CIR webservice asks for one request at a time, and data has to be deleted within six months after a case ends.
Our new CIR account did not work at once. After the subscription was granted, the webservice refused the login ("user does not exist in the usertable") on 2026-11-08 and accepted it on 2026-11-09.
The Dutch beneficial-owner register is closed to the public.

One call

{"query": "Atlas Technologies B.V.", "country": "NL"}

That body goes to POST https://api.boscolabs.dev/v1/counterparty-check. Atlas Technologies B.V. is the company behind Lightyear, and the CIR returned 2 publications for it on 2026-11-09.

Check	Source for this country
Register status	The LEI record (GLEIF); KVK is not read
Insolvency	CIR, by the KvK number in the LEI record, else an exact name match
People on sanctions lists	Not checked: no open source for officers
Recent accounts	ESEF annual reports, listed companies only
VAT number	VIES
Company on sanctions lists	OFAC, UN, UK, EU and US export lists
IBAN	ISO 13616 check digits; no bank is contacted

$0.05 per company checked, empty and failed calls are free.

What we do not cover

Anything from KVK: the real register status, legal form, addresses and officers. We have not applied for partner status yet.
The status we give repeats what the company told its LEI issuer at the last yearly renewal. A Dutch company without an LEI is not found.
Natural persons are never searched in the CIR.

Sources

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