swissco-mcp

An MCP server for Swiss company data. Nine tools that look a company up by UID, search 790,000 of them by name or by statutory purpose, trace what changed in the commercial register, browse public tenders, check a bank licence, resolve a UID to an LEI and its group parent, and find federally funded research a company took part in.

claude mcp add swissco -- uvx swissco-mcp

All data comes from six open-data sources, none of which needs a credential: Zefix on LINDAS for the commercial register, the Amtsblattportal for the Swiss Official Gazette of Commerce, simap.ch for public procurement, FINMA for authorised banks and securities firms, GLEIF for the Legal Entity Identifier and group structure, and ARAMIS for federally funded research.

Built and maintained by Prospex, a Swiss B2B sales intelligence platform.

Install

The server runs over stdio and needs Python 3.14 or newer.

uvx swissco-mcp              # run it without installing
pip install swissco-mcp      # or install it

Registering it depends on the host. Claude Code takes one command:

claude mcp add swissco -- uvx swissco-mcp

Anything that reads a JSON config takes the equivalent block:

{
  "mcpServers": {
    "swissco": {
      "command": "uvx",
      "args": ["swissco-mcp"]
    }
  }
}

Tools

Every tool returns the same envelope: rows, a count, and notes.

What the notes carry

Each source covers a slice of Swiss economic life, and a company's absence from one of them usually means it sits outside that slice. notes says which:

• FINMA's list covers banks and securities firms. Insurers, portfolio managers and fund management companies hold their authorisations on other lists, so a company missing here may still be supervised.
• About 28,000 Swiss entities hold an LEI, against roughly 790,000 in the commercial register. An absent LEI is the normal case.
• ARAMIS searches project titles, abstracts and a free-text contractor field, and indexes the structured participant list under none of them. A company named only as a structured partner cannot be found through it.
• LINDAS publishes the active commercial register. A deleted company can be missing from it while its gazette publications remain.

notes also reports what a call did with a request it had to trim, and how many requests a wide date range is about to cost.

Configuration

Every tool works with no configuration at all. Four environment variables change what it does:

Rate limiting

Requests are paced at half a second apart, and each source that asks for something slower gets it: FINMA is paced at a second. These are small public services run by federal offices, and SWISSCO_INTERVAL can raise that floor but never lower it.

The command line

The same data is available as a shell command, from the same repository:

uvx swissco lookup CHE-444.420.929

See swissco on PyPI and its documentation.

Documentation

Full reference for every tool, its arguments and its caveats: swissco-mcp.readthedocs.io.

Licence

MIT. The data belongs to its publishers, and each source's own terms apply; the access and terms section lists them.