What is Zefix Search?
Zefix Search is an unofficial MCP server for zefix.ch – the Switzerland Central Business Name Index. It allows AI assistants to search for companies incorporated in Switzerland by name or UID, with optional filters by canton, legal form, location, and more, and provides full company details including history, capital, and legal representatives.
How to use Zefix Search?
Install the .mcpb file on Claude Desktop or add the npx command to your MCP host config. Once configured, invoke the get_companies tool with parameters such as name_or_uid, cantons, legalForms, exactSearch, and phoneticSearch. The server runs over stdio and requires no authentication.
Key features of Zefix Search
- Search Swiss companies by name or UID (CHE-nnn.nnn.nnn)
- Filter by canton, legal form, location, and former names
- Get full company details including purpose, address, capital, and auditors
- Supports phonetic and substring/wildcard search
- Results returned in Markdown with detail level based on result count
- Capped at 100 results per query
Use cases of Zefix Search
- Look up a company's registered address and legal representatives
- Discover all active companies in a specific canton and industry
- Research company history, mergers, and name changes for due diligence
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