Ministry of Justice, Administration and Digital Transformation of the Republic of Croatia

Croatian Court Register (Sudski registar)

Sudski registar is Croatia's court register of business entities — companies and other legal persons entered by the commercial courts. Its public API returns registry data as JSON once you authenticate with OAuth2.

Official source Croatia OAuth2 key (free) REST/JSON
GET sudreg-data.gov.hr/api/javni/detalji_subjekta?tip_identifikatora=oib&identifikator={oib}

Verified 2026-09

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About this API

Sudski registar (the Croatian court register) holds data on companies and other entities entered by Croatia's commercial courts. The public v3 API exposes individual tables (e.g. /subjekti, /tvrtke, /sjedista, /temeljni_kapitali, /pretezite_djelatnosti, /gfi, /statusni_postupci, /promjene) and code lists (/pravni_oblici, /sudovi, /drzave), plus an aggregate /detalji_subjekta resource that returns the full record for one entity looked up by MBS or OIB. Responses are JSON (XML optional), and historical states are retrieved through a snapshot mechanism (/snapshots and the snapshot_id parameter). Access requires OAuth2 authentication (client credentials); without a valid token the endpoints return 401.

Frequently asked questions

Do I need an API key?

Yes. The API is free but requires registering a client in the Sudski registar portal — after your account is verified you receive a client_id and client_secret, which you exchange for a bearer token (OAuth2, client credentials). A request without a valid token returns 401.

What data does this API return?

Registry data on entities entered in the Croatian court register: full and short business names, registered seat and addresses, legal form, capital, business objects and principal activity, statuses and proceedings, branches, and annual financial statements (GFI). The /detalji_subjekta resource returns all of this for a single entity looked up by MBS (register number) or OIB (personal identification number).

Can this API be called directly from a browser?

Not in practice. The endpoints require a bearer token obtained from a client_id/client_secret pair, and those credentials must stay on the server, so the API is called from your backend rather than front-end code. That is why there is no live in-browser 'Try it' button here.

Who runs this API?

The Ministry of Justice, Administration and Digital Transformation of the Republic of Croatia. The register itself is kept by Croatia's commercial courts, with technical and IT operation provided by FINA (the Financial Agency).

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