Company Registries

Look up any company in official registers from Claude: LEI, status, address, directors and group structure.

Searches GLEIF's global LEI index and the official business registers of France (SIRENE/RNE), Norway (Brønnøysund), Finland (PRH/YTJ) and Estonia, plus UK Companies House with your own free API key. Every result is normalised to the same fields (name, registration number, status, legal form, address, incorporation date, activity code) with a link back to the register. Directors are passed through from the register on request and never stored.

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What you can ask

Find Danone's SIREN, legal form, headcount band and current directorsWho is the ultimate parent of LEI 635400MVFAF2XIJSLW11 and what other subsidiaries does it have?Check whether the Norwegian supplier 923609016 is active and who sits on its board

Tools and prices

4 tools

Tool	What it does	Per call
companies_search	Search by name or number in GLEIF or a national register (FR, NO, FI, EE, GB)	€0.01
companies_get	Full record for an LEI or a national registration number	€0.01
companies_lei_relationships	Direct and ultimate parent plus subsidiaries from GLEIF	€0.01
companies_officers	Directors, board and auditors as published in France, Norway and the UK	€0.01

Charged only when the call succeeds. Listing the tools is free.

How to connect

Add it to Claude

Create a OpenJack account and copy your connection key from your account.

In Claude, open Settings → Connectors → Add custom connector and paste https://company-registry.openjack.dev/mcp.

Click Connect. On the connect page enter your connection key and your GLEIF and national business registers credentials. They are checked live and stored encrypted.

Requirements

An OpenJack account with credits
Optional: a free Companies House REST API key for UK companies

FAQ

Which countries are covered?

Worldwide through GLEIF for any entity with an LEI. National registers: France, Norway, Finland and Estonia without any key, and the UK when you add a free Companies House API key. Other countries are searched through GLEIF.

Do I need an API key?

Only for UK Companies House data. Leave the field empty and everything else works; UK tools then tell you how to add the key.

Can I use the data commercially?

Yes. GLEIF data is CC0, French SIRENE data is Licence Ouverte 2.0, Norway's is NLOD 2.0, Finland's and Estonia's are CC BY 4.0 and Companies House data is under the Open Government Licence. Attribute the register when you republish.

What about personal data of directors?

Officer names and roles are fetched from the register only when you ask, passed straight to Claude and never logged or stored. Birth dates are shortened to year and month.

Why is the Estonian search limited to 10 results?

The Estonian register's public search service returns at most 10 matches. Use a more specific name or the 8-digit registry code.

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