Zefix (Szwajcaria)

Zefix — Swiss central business index

Switzerland's official central business index (Zefix), linking the cantonal commercial registers. The PublicREST API returns data by IDE/UID number or name. Requires a free account.

Official source Switzerland registration REST/JSON
GET www.zefix.admin.ch/ZefixPublicREST/api/v1/company/uid/{uid}

Verified 2026-08

See documentation →

About this API

Zefix (Zentraler Firmenindex) is Switzerland's central business index, aggregating the cantonal commercial registers. The public PublicREST API returns company data by identification number (IDE/UID) or name. Access requires a free account with Basic authentication.

Frequently asked questions

Do I need an API key?

Yes — it requires a free account (Basic username/password authentication).

What data does this API return?

A Swiss company's data by IDE/UID number or name — name, registered seat (canton), legal form and status.

Can this API be called directly from a browser?

Not easily — key/registration-based authentication requires a server-side call and is not suitable for frontend code visible to visitors (which is why there is no live "Try it" button here).

Who runs this API?

Zefix (Swiss Federal Office of Justice). Documentation: zefix.admin.ch.

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