Fedlex Connector

Name: Fedlex Connector
Author: JayTheSkier

by JayTheSkierversion 1.0.0i★ 8iRuns in the cloud

Registry namech.fedlex-connector/fedlex-connector

How to install

What it does

Search Swiss federal legislation: laws, articles, amendments via the Fedlex SPARQL endpoint.

Connects Runs in the cloud
Account or key No key needed
Category Law & government data

Install

Pick the AI app you use, then copy the settings.

Passed 5/5 checks · What you ask goes through the maker’s server (mcp.fedlex-connector.ch)

First: which AI do you use?

ClaudeWeb · app · phoneChatGPTWebClaude CodeTerminalCursorCode editorVS CodeCode editorOtherOther apps

Pick your app and the steps appear below.

Works with Claude · about 2 min

No key, nothing to install · Set it up once on claude.ai or the desktop app, then use it in chat · free accounts can add 1 · on Team/Enterprise an Owner adds it

Open Claude’s Connectors page
CustomizeConnectors
Done
Click “+ Add” → “Add custom connector” and fill in these 2 fields
Copy each value into the field with the same name in Claude, then click Continue
Name · NameFedlex Connector
Remote MCP server URL · Addresshttps://mcp.fedlex-connector.ch/
Leave Authentication as Claude detected it, then click Add
Done
Turn it on in a chat
+ConnectorsFedlex Connector
Done
Try it
Use Fedlex Connector and tell me what you can do for me, then show me one thing
✓ If Claude says it is using Fedlex Connector or shows a Fedlex Connector tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with ChatGPT on business plans only

ChatGPT Business, Enterprise or Edu on the web, added by a workspace admin or owner · On Free, Plus or Pro: your ChatGPT plan cannot connect MCP yet

Open ChatGPT’s add-MCP page on the web
Plugins+Add custom MCP server
Done
Fill in the name and address
Enter a name, paste the address under Connection, tick the risk warning and click Create as a plugin
Name · NameFedlex Connector
Connection · Addresshttps://mcp.fedlex-connector.ch/
Done
Pick Fedlex Connector in a chat
Start a new chat and pick Fedlex Connector from your plugins before typing
Done
Try it
Use Fedlex Connector and tell me what you can do for me, then show me one thing
✓ If ChatGPT says it is using Fedlex Connector or shows a Fedlex Connector tool in the answer, you are connected

Menu names checked against OpenAI’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Claude Code · about 2 min

No key, nothing to install

Open Terminal
Mac: press Command+Space and type Terminal · Windows: open PowerShell
Done

Paste this command and press Enter

claude mcp add --transport http --scope user fedlex-connector https://mcp.fedlex-connector.ch/

Done

Type /mcp in Claude Code
You should see Fedlex Connector listed as connected
Done
Try it
Use Fedlex Connector and tell me what you can do for me, then show me one thing
✓ If Claude Code says it is using Fedlex Connector or shows a Fedlex Connector tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Cursor · about 2 min

No key, nothing to install

Click this button to open Cursor
Open in Cursor
Cursor asks you to confirm; click Install
Done
Open the AI chat in Cursor in Agent mode
Done
Try it
Use Fedlex Connector and tell me what you can do for me, then show me one thing
✓ If Cursor says it is using Fedlex Connector or shows a Fedlex Connector tool in the answer, you are connected

Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with VS Code · about 2 min

No key, nothing to install

Click this button to open VS Code
Open in VS Code
VS Code asks you to confirm; click Install
Done
Open the AI chat in VS Code in Agent mode
Done
Try it
Use Fedlex Connector and tell me what you can do for me, then show me one thing
✓ If VS Code says it is using Fedlex Connector or shows a Fedlex Connector tool in the answer, you are connected

Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.

See every app that uses MCP →

Address for apps that connect over the web

Addresshttps://mcp.fedlex-connector.ch/

JSON settings are under “For developers” below

Stuck? Ask people who use Fedlex Connector💬 Discussion →

For developers: Terminal commands and JSON settings

Over the web

Claude Code

claude mcp add --transport http --scope user fedlex-connector https://mcp.fedlex-connector.ch/

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "fedlex-connector": {
      "url": "https://mcp.fedlex-connector.ch/"
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "fedlex-connector": {
      "type": "http",
      "url": "https://mcp.fedlex-connector.ch/"
    }
  }
}

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

At a glance

GitHub stars i: 8
Downloads per weeki: Not on npm/PyPI
Verified domain: ✓ fedlex-connector.ch
Licence i: MIT
Connection: Runs in the cloud
Transport: streamable-http
Latest versioni: 1.0.0
Categoryi: Law & government data
Published to registryi: Apr 10, 2026
Code last changedi: Oct 28, 2026
Maker: JayTheSkier
Repo: JayTheSkier/fedlex-connector
Website: fedlex-connector.ch
Registry status: Active

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Connect over the internet in

Claude ChatGPT Goose LM Studio Msty Studio Cherry Studio Cursor VS Code + GitHub Copilot Visual Studio Windsurf (Devin Desktop)Zed Kiro Cline Continue JetBrains AI Assistant Claude Code Codex CLI Gemini CLI OpenCode nodecode Warp LibreChat Open WebUI Raycast

All apps, with pros and cons →

What it can do

Tool names and descriptions exactly as the server reported them on Nov 12, 2026. The maker wrote them, not us; we show them as plain text.

search_by_title
Search Swiss federal legislation titles in the Classified Compilation (RS/SR) on Fedlex. Use to find the RS number of a law when you know its name but not its number. Searches titles only, not article content. Returns only acts currently in force.
get_article
Retrieve a single article when you already know the EXACT article number (e.g. from a cross-reference). Do NOT call this tool repeatedly to search for provisions — use get_law_text instead to fetch the full act or a section and locate relevant articles in the text.
get_law_text
Retrieve the official consolidated text of a Swiss federal act (or a specific title/chapter) directly from Fedlex (fedlex.admin.ch). This is the PRIMARY tool for answering Swiss law questions — always start here. Fetch the full act or a specific section, then locate relevant prov
list_amendments
List consolidation version dates for a Swiss federal act. Returns the dates each consolidated version took effect.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 12, 2026

✓ Pass
Maker matches the repo
The registry name was verified against the domain fedlex-connector.ch (the registry checks domain ownership)
✓ Pass
Still maintained
Code last changed 15 days ago
✓ Pass
Has a licence
Uses MIT
✓ Pass
Endpoint responds
Responded in 209 ms (HTTP 200)
– Not applicable
Sign-in with OAuth
No sign-in needed
✓ Pass
No hidden instructions in tool descriptions
Read 4 tool descriptions and found no hidden instructions to the AI

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

No posts yet. Be the first to ask or share.

Posts here are written by users, not the PopNx team.

User reviews

No reviews yet

Compared with others in Law & government datai

More stars than 97% of the other 1815 servers in this category
Published to the registry more recently than 4% of the other 1815 servers in this category
Basic checks equal to or better than 100% of the other 1815 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Fedlex Connector safe?

It passed 5 of 5 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed 15 days ago, and the latest version (1.0.0) reached the registry 7 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT Business and above.

What can I use instead?

In the same category: Korean Law MCP, Global law, Tw Legal Rag

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

Fedlex Connector

Access Swiss Federal Law from Claude

A connector that gives Claude direct access to the official text of Swiss federal legislation on Fedlex, built on the Model Context Protocol (MCP). Covers all acts in the Classified Compilation (SR, RS) in German, French, and Italian.

Why This Exists

Swiss federal law is published exclusively on Fedlex, but the frontend is a JavaScript single-page application that Claude's built-in web tools cannot render. However, Fedlex exposes two machine-readable interfaces that work without JavaScript:

A SPARQL endpoint (fedlex.data.admin.ch/sparqlendpoint) for metadata queries
A static HTML filestore (fedlex.admin.ch/filestore/...) serving consolidated legislation

This MCP server bridges the gap: it queries SPARQL for metadata (RS numbers, consolidation dates, amendment history), fetches and parses the HTML for the actual legislative text, and returns it to Claude in a structured format. No proprietary database, no cache -- just a stateless bridge to Fedlex's open data infrastructure.

Setup

The server supports two transports: stdio for local use (Claude Code, Claude Desktop) and HTTP for remote use (claude.ai). You can use one or both.

The server is hosted at:

https://mcp.fedlex-connector.ch

claude.ai / Claude Desktop:

Go to claude.ai
Click Customize (*Anpassen* / *Personnaliser* / *Personalizza*) in the sidebar
Click Connectors
Click + → Add connector
Click Add custom connector and paste the URL: https://mcp.fedlex-connector.ch

We suggest naming it "Fedlex Connector".

Claude Code:

claude mcp add --transport http fedlex https://mcp.fedlex-connector.ch

Once connected, Claude can answer questions like *"What does art. 1 of the Swiss Civil Code say?"* by pulling the text directly from Fedlex.

Deploying Your Own Instance

The server includes a Dockerfile for deploying to any cloud platform that supports Docker containers (Railway, Fly.io, Render, etc.). Set the PORT environment variable and the server runs in HTTP mode. Without PORT, it runs in stdio mode for local use.

Your MCP endpoint will be at https://your-domain. Verify with:

curl https://your-domain/health

Tools

`search_by_title`

Search Swiss federal legislation titles in the Classified Compilation (RS/SR). Returns only acts currently in force.

Parameter	Type	Required	Description
`query`	string	Yes	Keywords to match against act titles
`language`	`fr` `de` `it`	No	Language for results (default: `de`)

Example: Find the RS number for the data protection act.

search_by_title(query="protection des données")

→ RS 235.1 — Loi fédérale sur la protection des données (LPD)

`get_article`

Retrieve the official consolidated text of a specific article.

Parameter	Type	Required	Description
`rs_number`	string	Yes	RS number (e.g. `"210"` for CC, `"220"` for CO)
`article`	string	Yes	Article number (e.g. `"3"`, `"28a"`, `"260bis"`)
`language`	`fr` `de` `it`	No	Language (default: `de`)
`date`	string	No	Consolidation date (YYYY-MM-DD); defaults to latest

Example: Retrieve art. 1 CC in German.

get_article(rs_number="210", article="1", language="de")

→ Art. 1: Das Gesetz findet auf alle Rechtsfragen Anwendung...

`get_law_text`

Retrieve the full text of an act or a specific title/chapter. This is the primary tool for reading and analysing legislation from the source.

Parameter	Type	Required	Description
`rs_number`	string	Yes	RS number
`section`	string	No	Limit to a title/chapter (e.g. `"Titre huitième"`)
`language`	`fr` `de` `it`	No	Language (default: `de`)
`page`	number	No	Page for paginated results (default: 1)

Large acts are paginated automatically (splitting at article boundaries). Each response includes the total page count.

Example: Retrieve Swiss tenancy law (CO, Title 8).

get_law_text(rs_number="220", section="Titre huitième", language="fr")

→ [Full text of tenancy provisions, art. 253 onwards]

`list_amendments`

List recent amendments (consolidation versions) for a given act.

Parameter	Type	Required	Description
`rs_number`	string	Yes	RS number
`since`	string	No	Start date, YYYY-MM-DD (default: 1 year ago)
`language`	`fr` `de` `it`	No	Language for titles (default: `de`)

Example: Check recent changes to the CO.

list_amendments(rs_number="220", since="2024-01-01")

→ 2026-01-01 — Version in force from 2026-01-01 (current) 2025-10-01 — Version in force from 2025-10-01 to 2025-12-31 ...

How It Works

Claude  ──MCP──>  Fedlex Connector  ──SPARQL──>  fedlex.data.admin.ch

──HTTP───> fedlex.admin.ch/filestore/...

Metadata path (SPARQL): The server queries Fedlex's SPARQL endpoint (JOLux ontology) to resolve RS numbers to internal URIs, find the latest consolidation date, discover HTML file URLs, and list amendment history.

Text path (HTML filestore): Once the server knows which HTML file(s) to fetch, it retrieves them from the static filestore, parses the DOM with Cheerio, and extracts the requested article, section, or full text. Large acts (like the CO with 1,100+ articles) are split across multiple HTML files which the server discovers and stitches together automatically.

Data flow for a typical request:

Claude calls get_article(rs_number="210", article="3")
Server queries SPARQL: RS 210 → ConsolidationAbstract URI
Server queries SPARQL: latest consolidation date for that URI
Server queries SPARQL: HTML filestore URL(s) for that consolidation
Server fetches HTML, parses it, extracts art. 3
Server returns the article text to Claude with consolidation date and legal caveat

Every response includes a footer noting that only the Official Compilation (RO/AS) published by the Federal Chancellery is legally authoritative.

Development

Project Structure

src/

index.ts # Entry point: picks stdio or HTTP transport based on PORT env var server.ts # MCP server factory: tool definitions and request handlers types.ts # TypeScript interfaces, error types, constants sparql.ts # SPARQL endpoint queries (metadata, RS resolution, amendments) filestore.ts # HTML fetching, parsing, article/section extraction, pagination build/ # Compiled JavaScript (generated by tsc) Dockerfile # Container build for cloud deployment

Scripts

Command	Description
`npm run build`	Compile TypeScript to `./build`
`npm start`	Run the MCP server (stdio mode)
`npm run start:http`	Run locally in HTTP mode on port 3000
`npm run dev`	Watch mode (auto-recompile on changes)

Dependencies

Package	Purpose
`@modelcontextprotocol/sdk`	MCP server SDK (tool registration, stdio transport)
`cheerio`	HTML parsing for extracting legislative text

Error Codes

The server returns structured errors with codes and actionable suggestions:

Code	Meaning
`RS_NOT_FOUND`	RS number not found in the SPARQL graph
`ARTICLE_NOT_FOUND`	Article does not exist in the act (with nearby IDs listed)
`SPARQL_UNAVAILABLE`	SPARQL endpoint is down or returned an error
`FILESTORE_ERROR`	HTML file not found or fetch failed
`INVALID_INPUT`	Missing or malformed parameters
`PARSE_ERROR`	HTML parsing failure

Known Limitations

Full act historical versions: get_law_text only retrieves full acts as they are currently in force and does not return past versions. For historical text, use get_article, which supports a date parameter.

HTML availability: Fedlex generally only provides HTML for consolidations from 2021 onwards. Older versions are only available as PDF or DOC on the Fedlex platform. The server returns a clear error with guidance when HTML is unavailable for a requested date.

Rate limiting: The SPARQL endpoint and filestore are public Swiss government services. The server limits itself to 10 requests/second per endpoint to be a responsible client.

Section filtering: The section parameter in get_law_text uses heading-text matching which works well for standard section names but may not match unusual headings. When filtering fails, the full act text is returned with a note.

Language coverage: Supports French (FR), German (DE), and Italian (IT). Romansch is not available.

Scope: Covers federal law in the Classified Compilation only. Cantonal law, the Federal Gazette, and court decisions are out of scope.

License

MIT

Fedlex Connector

What it does

Install

Open Claude’s Connectors page

Click “+ Add” → “Add custom connector” and fill in these 2 fields

Turn it on in a chat

Try it

Open ChatGPT’s add-MCP page on the web

Fill in the name and address

Pick Fedlex Connector in a chat

Try it

Open Terminal

Paste this command and press Enter

Type /mcp in Claude Code

Try it

Click this button to open Cursor

Open the AI chat in Cursor in Agent mode

Try it

Click this button to open VS Code

Open the AI chat in VS Code in Agent mode

Try it

Over the web

At a glance

Which apps can use it

Related guides

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Discussion

User reviews

Compared with others in Law & government datai

Common questions

Others in the same category

Korean Law MCP

Global law

Tw Legal Rag

README from the maker

Fedlex Connector

Why This Exists

Setup

Deploying Your Own Instance

Tools

search_by_title

get_article

get_law_text

list_amendments

How It Works

Development

Project Structure

Scripts

Dependencies

Error Codes

Known Limitations

License

`search_by_title`

`get_article`

`get_law_text`

`list_amendments`