English Français العربية

io.github.matematicsolutions/ch-eli-mcp

Official registry Other

MCP server for Swiss federal legislation via Fedlex (native ELI), verifiable citations.

Source code Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

PYPI package ch-eli-mcp
Claude Code 
claude mcp add ch-eli-mcp -- uvx ch-eli-mcp==0.3.3
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "ch-eli-mcp": {
            "command": "uvx",
            "args": [
                "ch-eli-mcp==0.3.3"
            ]
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. ch-eli-mcp
  2. What this is not
  3. Tools
  4. Install
  5. Configuration
  6. License

ch-eli-mcp

MCP server for Swiss federal legislation via Fedlex, the Federal Chancellery's official publication platform. Fedlex is genuinely ELI-native (European Legislation Identifier) even though Switzerland is not an EU member. Multilingual: German, French, Italian, English.

What this is not

This connector returns metadata (title, SR number) via SPARQL - not the operative text of the law. source_url points to the public Fedlex page where the full text lives.

Tools

ToolPurpose
ch_search_actsFull-text search over act titles, in one of four languages
ch_get_actFull detail for one act by its Fedlex ELI URI
ch_coverageDeclare what this connector covers, when each family was captured, and - explicitly - what it does NOT cover. Every gap carries a fallback.

Every response carries lex_uri (the native ELI URI - not invented, taken directly from Fedlex), source_url (the public HTML page), and human_readable_citation (e.g. "Bundesverfassung der Schweizerischen Eidgenossenschaft (SR 101)" - the SR number is Switzerland's own Systematische Sammlung / Classified Compilation citation convention).

Install

pip install ch-eli-mcp
Windows 11 with Smart App Control

Smart App Control blocks unsigned executables, which covers uvx.exe, pip.exe and the ch-eli-mcp.exe launcher that pip writes at install time. The python.exe and py.exe from the python.org installer are signed by the Python Software Foundation, so running the module through the interpreter works:

python -m pip install ch-eli-mcp
python -m ch_eli_mcp

pip.exe is blocked for the same reason, so install with python -m pip, not pip install. If python is not on PATH, use the Windows launcher: py -3 -m ch_eli_mcp.

{ "mcpServers": { "ch-eli-mcp": { "command": "python", "args": ["-m", "ch_eli_mcp"] } } }

Do not turn Smart App Control off to work around this - it cannot be re-enabled without reinstalling Windows.

Configuration

Env varDefault
CH_ELI_CACHE_DIR~/.matematic/cache/ch-eli
CH_ELI_AUDIT_DIR~/.matematic/audit
CH_ELI_BASE_URLhttps://fedlex.data.admin.ch/sparqlendpoint

License

Apache-2.0 (code). Fedlex content is official Swiss federal publication material (see SOURCES.md).

Frequently asked questions

What is io.github.matematicsolutions/ch-eli-mcp?

MCP server for Swiss federal legislation via Fedlex (native ELI), verifiable citations.

How do I install io.github.matematicsolutions/ch-eli-mcp?

It runs on your machine. In Claude Code: claude mcp add ch-eli-mcp -- uvx ch-eli-mcp==0.3.3. For other clients, paste the JSON configuration from this page into their MCP settings.

Does io.github.matematicsolutions/ch-eli-mcp need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is io.github.matematicsolutions/ch-eli-mcp open source?

Yes. Its code is on GitHub under the Apache-2.0 license.

Who maintains io.github.matematicsolutions/ch-eli-mcp?

It is published by matematicsolutions. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.