registry-mcp Tool Lets Claude Verify UK and Norwegian Companies via Official Registers
A developer tool called registry-mcp enables AI assistants like Claude to look up company details directly from the UK's Companies House and Norway's Brønnøysundregistrene using a single unified interface. The tool returns standardised JSON data including company status, legal form, registration date, and filing deadlines, while clearly indicating which fields each national register does or does not publish. For UK companies, it also surfaces filing due dates exactly as Companies House records them, including overdue ones shown as negative day counts rather than rolling them forward. Norway's register additionally provides VAT registration status and employee counts, data that the UK register does not publish at all. The tool includes a validation utility that normalises company number formats and supports error messages with built-in hints, though it currently covers only GB and NO country codes.
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