Openlex Mcp
by malkreidecommunityv0.2.5
An MCP server that provides full-text search, law retrieval, article extraction, and live metadata for Canton Zurich legislation (ZH-Lex). It uses a local SQLite/FTS5 cache for about 974 laws and fetches current validity status and PDF links from zh.ch.
From the registry: Canton Zurich legislation via ZH-Lex with full-text search and article extraction
Install & configure
Prerequisites
- requiredInstall Python 3.11+Python 3.11 or newer is required to run the server.https://www.python.org/downloads/
- requiredInstall uvInstall uv to run the server via uvx, which is the simplest portable path shown in the README.https://docs.astral.sh/uv/
- requiredInternet connection for initial data downloadThe first start downloads and indexes the legal dataset; live metadata requests also require internet access.
Install in your client
Paste into the AI you're chatting with — it will figure out the rest
Please install the `openlex-mcp` MCP server into my current AI client (that's you).
Required prerequisites (do these first if not already done):
- **Install Python 3.11+** — Python 3.11 or newer is required to run the server. (https://www.python.org/downloads/)
- **Install uv** — Install uv to run the server via uvx, which is the simplest portable path shown in the README. (https://docs.astral.sh/uv/)
- **Internet connection for initial data download** — The first start downloads and indexes the legal dataset; live metadata requests also require internet access.
Canonical MCP server config (stdio transport):
- command: `uvx`
- args: ["openlex-mcp"]
Note: README includes multiple run modes. Preferred canonical install path is uvx per the generated install section. The server also supports HTTP/SSE mode, but the README does not provide a canonical client config shape for HTTP beyond a browser URL example. No API key or auth is required.
Add this MCP server to my current client's config in the correct format for you. If you need secrets or credentials I haven't provided, ASK me — do not invent values or leave raw placeholders. After adding it, tell me how to verify the server is connected.Note: README includes multiple run modes. Preferred canonical install path is uvx per the generated install section. The server also supports HTTP/SSE mode, but the README does not provide a canonical client config shape for HTTP beyond a browser URL example. No API key or auth is required.
Tools (8)
openlex__zhlaw_search_laws
Full-text search across all Zurich laws with FTS5 and BM25 ranking
openlex__zhlaw_get_law
Retrieve a law by LS number or abbreviation
openlex__zhlaw_list_laws
List and filter laws by legal area prefix
openlex__zhlaw_find_education_laws
Search within education law (LS 412.x series)
openlex__zhlaw_get_article
Extract a specific article from a law
openlex__zhlaw_search_articles
Search within all articles of a specific law
openlex__zhlaw_get_law_metadata
Get live metadata from zh.ch, including PDF links and validity status
openlex__zhlaw_update_cache
Refresh the local data cache from HuggingFace
Environment variables
MCP_HOSTrequiredSets the HTTP bind host for the server; needed for cloud/container deployment when exposing the serviceMCP_PORTrequiredSets the HTTP port for the serverPrerequisites
- • Python 3.11+
- • Python 3.11
Packages
openlex-mcp
pypiv0.2.5transport: stdio
Details
- Language
- Python
- License
- MIT
- Released
- Aug 2, 2026
- Last commit
- Jun 8, 2026
- Registry name
- io.github.malkreide/openlex-mcp