Swiss Federal Law MCP Server (Fedlex)

An MCP server that gives AI agents the in-force text of Swiss federal law, from the Federal Chancellery's Fedlex data. It searches the Classified Compilation (SR) and returns an article in German, French, Italian or English (where a translation exists). USD 0.01 per answered tool call. A call that finds nothing is free. Apify also bills the server's Standby usage. Works with MCP clients such as Claude, ChatGPT, Cursor and n8n.

Tool call	What comes back
search_law("MWSTG")	SR 641.20, the Value Added Tax Act, in force
search_law("OR")	SR 220, the Code of Obligations, as the first hit
get_article("641.20", "1", "en")	Art. 1 "Subject and principles", version 2025-03-31, with footnotes
get_article("641.20", "10", "de")	the German text of Art. 10 in force, with the version date
search_law("<nonsense>")	a free error result: nothing found

The calls come from the live smoke test against Fedlex (03.11.2026). The full answer is under Example.

Who uses it

• Legal and tax assistants for Swiss users: quote the exact article instead of the model's memory.
• Compliance agents: look up the data-protection act (DSG), the VAT act (MWSTG) or the Code of Obligations (OR).
• Developers of Swiss legal products: one MCP endpoint instead of a SPARQL and XML parser of their own.

What it does not do

• Federal law only: no cantonal law, no case law.
• The main text only: no transitional provisions, no annexes.
• The English text is a translation without legal force. This is not legal advice.
• It is independent: not affiliated with or endorsed by the Swiss Federal Chancellery.

Tools

Two tools:

Tool	What it does
search_law(query, language?, includeRepealed?)	Find acts by words of the title, the abbreviation (MWSTG, OR, DSG, StGB) or the SR number (641.20, also written SR 641.20). Up to 20 acts with SR number, title, abbreviation, in-force status and a link. All words must match; an exact abbreviation or SR number ("OR") comes first; in-force acts only unless includeRepealed.
get_article(srNumber, article, language?)	The text of one article - 641.20 + 10, 220 + 41, 101 + 8, also 10a, 10bis, 663bbis - with the version date and the footnotes (the amendment history: "Fassung gemäss Ziff. I des BG vom ..., in Kraft seit ..."). Main text only: transitional provisions and annexes are not supported.

Connect

The actor runs in Apify's Standby mode; the MCP endpoint (Streamable HTTP) is https://darikami--swiss-federal-law-mcp.apify.actor/mcp, authenticated with your Apify API token as a bearer token:

{
  "mcpServers": {
    "swiss-federal-law": {
      "url": "https://darikami--swiss-federal-law-mcp.apify.actor/mcp",
      "headers": { "Authorization": "Bearer <your Apify token>" }
    }
  }
}

Input (optional): defaultLanguage - de (default), fr, it, en - used when a call does not name a language.

Example

get_article with { "srNumber": "641.20", "article": "1", "language": "en" } returns, abridged:

{
  "srNumber": "641.20",
  "language": "en",
  "title": "Federal Act of 12 June 2009 on Value Added Tax (Value Added Tax Act, VAT Act)",
  "shortTitle": "VAT Act",
  "versionDate": "2025-03-31",
  "article": { "number": "Art. 1", "heading": "Subject and principles", "text": "Art. 1 Subject and principles\n1 The Confederation shall levy a general consumption tax ...", "footnotes": ["..."], "truncated": false },
  "url": "https://www.fedlex.admin.ch/eli/cc/2009/615",
  "source": "Fedlex, Swiss Federal Chancellery (fedlex.admin.ch) - Classified Compilation of Federal Legislation (SR)",
  "notice": "Only the texts published by the Confederation in the Official Compilation are legally binding; ..."
}

Pricing (pay per event)

Event	Price	When
tool-call	USD 0.01	one answered call of either tool

Calls that find nothing (unknown act, unknown article, no English version), calls with bad input and calls the source fails are free: they return an error result with the reason. Apify also bills the platform usage of the Standby run, in addition to the tool-call price. We do not set that charge. That usage runs while the server waits for requests, until the idle timeout stops it. Apify's documents describe a maximum cost per run for standard runs, not for a Standby call.

Data source and terms

• Source: the Federal Chancellery's Fedlex linked data - SPARQL https://fedlex.data.admin.ch/sparqlendpoint for search and for the version that applies today, and the consolidated text as the Akoma Ntoso XML file that Fedlex publishes for each version (https://www.fedlex.admin.ch/filestore/...). Each answer names its source and the act's page on fedlex.admin.ch.
• Terms (read 03.11.2026): acts, ordinances and official decisions of the Confederation are not protected by copyright (Art. 5 URG).
• Only the official publication is legally binding. The text served is Fedlex's consolidated version - a convenience copy; the English version is a translation without legal force. The answer says so (notice). This is not legal advice.
• When more calls arrive than the actor reads at once, the surplus gets a free "busy" error result.
• The text comes as Fedlex publishes it, without warranty.

More official-data actors by darikami: Swiss UID & VAT validator · Swiss electricity tariffs · SEC company fundamentals · German public tenders.