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Eur Lex MCP Server

answering

Eur Lex MCP Server is answering right now. Last checked 8 min ago. 672 installs a week from npm. It exposes 7 tools. Last commit 16 Sep 2026.

Search EU legislation, CJEU case law, and treaties; traverse CELLAR graph; browse EuroVoc concepts.

Installs per day peak 441 · avg 72 · +515% w/w
a month agotoday
Uptime history 48 days of history · worst day 0%
48 days agonow
100.0%
Uptime 24h
92 of 92 checks
7
Tools
read from the server
375 ms
Response time
average over 24h
672
Installs / week
npm and PyPI

What changed 21

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 23 August 2026. No other catalogue keeps this.

16 Sep a tool changed version
10 Sep 3 tools changed the parameters they ask for eurlex_browse_subjects, eurlex_get_document, eurlex_get_relations
10 Sep 2 tool descriptions were rewritten eurlex_browse_subjects, eurlex_get_relations
10 Sep a tool changed version2 times that day
31 Aug a tool changed version2 times that day
31 Aug 2 tools changed the parameters they ask for eurlex_get_document, eurlex_search_documents
31 Aug a tool description was rewritten eurlex_get_document
22 Aug 7 tools changed the parameters they ask for eurlex_browse_subjects, eurlex_get_cases, eurlex_get_document and 4 more
22 Aug a tool changed version
and 2 more, back to 23 August 2026

Nothing serious here today

Today is the operative word: we check Eur Lex MCP Server every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 8 min ago.

run in your terminal
claude mcp add eur-lex-mcp-server --transport http https://eur-lex.caseyjhand.com/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "eur-lex-mcp-server": {
      "url": "https://eur-lex.caseyjhand.com/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.eur-lex-mcp-server]
url = "https://eur-lex.caseyjhand.com/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "eur-lex-mcp-server": {
      "url": "https://eur-lex.caseyjhand.com/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "eur-lex-mcp-server": {
      "url": "https://eur-lex.caseyjhand.com/mcp"
    }
  }
}

This one needs environment variables set before it will start: MCP_HTTP_HOST (The hostname for the HTTP server.), MCP_HTTP_PORT (The port to run the HTTP server on.), MCP_HTTP_ENDPOINT_PATH (The endpoint path for the MCP server.), MCP_PUBLIC_URL (Public origin for deployments behind a TLS-terminating reverse proxy (e.g. https://mcp.example.com).), MCP_AUTH_MODE (Authentication mode to use: 'none', 'jwt', or 'oauth'.), MCP_LOG_LEVEL (Sets the minimum log level for output (e.g., 'debug', 'info', 'warn').), CELLAR_SPARQL_ENDPOINT (CELLAR SPARQL endpoint URL override (e.g., for a local Virtuoso mirror).), EURLEX_CONTENT_BASE_URL (Base URL of the EU Publications Office CELLAR content-negotiation resolver that serves act full text; override e.g. for a local mirror.), SPARQL_QUERY_TIMEOUT_MS (Client-side timeout for SPARQL requests in milliseconds.), MAX_SPARQL_RESULTS (Enforced ceiling on LIMIT in all generated SPARQL queries.). The author declared them in the registry entry; get the values from the project itself.

Available tools 7

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

eurlex
eurlex_browse_subjects
Search the EuroVoc thesaurus, resolving a keyword into concept URIs usable in the eurovoc_concept subject filter of eurlex_search_documents. Matches both preferred and alternative (non-preferred) labels, so a common synonym reaches the concept it stands for. Returns each concept URI, its preferred label in the requested language, code, broader (parent) label, and the alternative label that matched when one did, ordered alphabetically by preferred label.
eurlex_get_cases
Search CJEU and General Court case law — judgments, orders, and Advocate General opinions — by case number, court, case type, keyword, and date range. By default only these primary records are returned; derivative judicial information notices, case abstracts, summaries, and corrigenda are excluded so distinct cases fill the page (set include_derivative to include them). Keyword matches English case titles (which carry party names) and CELEX strings; there is no full-text body search. Returns each case with its court, date, and type, plus — parsed from the title where present — the parties, subject matter, and case reference.
eurlex_get_document
Fetch the metadata and full text of an EU act by CELEX number, ELI URI, or work URI. Returns structured metadata (title, date, type, author institution, legal basis, EuroVoc subjects, in-force status) plus the act body as HTML, Markdown, or Formex4 XML, defaulting to English with automatic fallback. Ordinary offset-based paged windows and full-mode windows are capped at 100,000 characters; page with offset/limit to reconstruct larger acts, or use outline: true for a heading map and select to pull specific articles, chapters, recitals, or annexes.
eurlex_get_relations
Traverse the one-hop CDM relationship graph of an EU act: what it amends or is amended by, what it repeals or is repealed by (explicit and implicit), its consolidated versions, national transposition measures, its legal basis, and works that cite it. Returns direct relations only, paginated per relation type and direction. Requires a CELEX number or CELLAR work URI.
eurlex_lookup_celex
Resolve an EU legal citation — a CELEX number or ELI URI — to its canonical CELLAR work, confirming it exists before you fetch or traverse it. Returns the work URI, confirmed CELEX number, document type, and date.
eurlex_query_sparql
Run a raw, read-only SPARQL SELECT against the CELLAR Virtuoso endpoint — an escape hatch for CDM ontology traversals the curated tools do not cover. Only SELECT is accepted; update forms and ASK/CONSTRUCT/DESCRIBE are rejected before execution, and results are capped at 100. The cdm:, skos:, and xsd: prefixes are auto-injected.
eurlex_search_documents
Search EU legislation, treaties, and preparatory acts across the CELLAR corpus by document type, date range, EuroVoc subject, author institution, and in-force status. Keyword matches English titles and CELEX strings only — there is no full-text body search. Returns a page of CELEX numbers, work URIs, type labels, dates, and titles, newest first, each flagged with is_consolidated. At least one filter is required.

Endpoints

URLTransportStateLatencyChecked
https://eur-lex.caseyjhand.com/mcp streamable-http answering 368 ms 8 min ago

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Eur Lex MCP Server — questions

Answers built from our own checks of this server.

What can Eur Lex MCP Server do?
It exposes 7 tools, read directly from the server on our last check. Among them: eurlex_browse_subjects, eurlex_get_cases, eurlex_get_document, eurlex_get_relations, eurlex_lookup_celex, eurlex_query_sparql and 1 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Eur Lex MCP Server working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 375 ms. The bar chart above shows every period we have measured.
How do I connect Eur Lex MCP Server?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Eur Lex MCP Server need an API key?
No. Eur Lex MCP Server completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 7 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Eur Lex MCP Server?
It answers our handshake in 375 ms on average, which is faster than 41% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
How many people use Eur Lex MCP Server?
The npm package @cyanheads/eur-lex-mcp-server was installed 672 times in the last week. Week over week that is +515%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Eur Lex MCP Server open source?
Yes — it is published under the Apache-2.0 licence, written in TypeScript, 7 stars on GitHub and 2 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.