Eur Lex MCP Server
@cyanheads/eur-lex-mcp-server Search EU legislation, CJEU case law, and treaties; traverse the CELLAR relationship graph; resolve EuroVoc concepts via MCP. STDIO or Streamable HTTP. Its README documents 7 tools, including eurlex_search_documents, eurlex_get_document, eurlex_lookup_celex.
People connecting this server to Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.
VERIFIED ACTIVE
LAST COMMIT 2026-08-22 · ★ 5 · #153 OF 848 MAINTAINED OTHER · VERIFIED 2026-08-25
Apache-2.0 · TypeScript servers · how we verify → /methodology
01 · Install Eur Lex MCP Server
before you install - you'll need
Set MCP_TRANSPORT_TYPE, MCP_LOG_LEVEL before connecting.
Claude Code
claude mcp add cyanheads-eur-lex-mcp-server --transport http https://eur-lex.caseyjhand.com/mcpClaude Desktop / Cursor / VS Code - add to config
{
"mcpServers": {
"cyanheads-eur-lex-mcp-server": {
"url": "https://eur-lex.caseyjhand.com/mcp"
}
}
}Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.
Using another client? Same JSON, different key
Claude Desktop · mcpServers
Cursor · mcpServers
VS Code · servers
Windsurf · mcpServers
Zed · context_servers
Cline · mcpServers
Roo Code · mcpServers
Continue · mcpServers
LibreChat · mcpServers
Gemini CLI · mcpServers
Codex CLI · mcp_servers
Full setup guides: every client.
02 · Evidence
https://eur-lex.caseyjhand.com/mcp
transport: streamable-http
endpoint alive - responded to MCP initialize · probed 2026-08-25
Security posture
What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.
runs as local process (stdio) - runs on your machine with your user's permissions · remote - your agent's requests go to eur-lex.caseyjhand.com
endpoint auth accepted our unauthenticated MCP initialize - no credentials needed to connect
license Apache-2.0 - declared in the repository
npm package @cyanheads/eur-lex-mcp-server - published under the repo owner's npm scope (@cyanheads)
registry namespace io.github.cyanheads is GitHub-verified and matches the repo owner
03 · What Eur Lex MCP Server can do
Prose above is summarized from the project's README and registry record - no invented capabilities.
What you can build
With this server connected, an agent can fetch structured metadata and full text (HTML, Markdown, or Formex4 XML) for a work by CELEX number or ELI URI, resolve an EU legal citation - a CELEX number or an ELI URI - to the canonical CELLAR work, and execute a raw SPARQL SELECT query against the CELLAR Virtuoso endpoint. Results capped at 100.
The 7 tools it gives your agent
Extracted from the project's README - what eur-lex-mcp-server lets an agent do.
- eurlex_search_documents
- - Search EU legislation, treaties, and preparatory acts across the CELLAR corpus. Filters by document type, date range, EuroVoc concept, author institution, and i
- eurlex_get_document
- - Fetch structured metadata and full text (HTML, Markdown, or Formex4 XML) for a work by CELEX number or ELI URI.
- eurlex_lookup_celex
- - Resolve an EU legal citation - a CELEX number or an ELI URI - to the canonical CELLAR work.
- eurlex_get_cases
- - Search CJEU and General Court case law - judgments, orders, and Advocate General opinions - by case number, party name, subject, or date range.
- eurlex_get_relations
- - Traverse the CELLAR relationship graph: amendment chain, consolidated versions, legal basis, citation network, and national transposition measures.
- eurlex_browse_subjects
- - Search the EuroVoc multilingual thesaurus to resolve human-readable terms to EuroVoc concept IDs - required before using the eurovoc_concept filter in eurlex_se
- eurlex_query_sparql
- - Execute a raw SPARQL SELECT query against the CELLAR Virtuoso endpoint. Results capped at 100; use only when curated tools don't cover the needed CDM ontology t
Latest releases
v0.9.9 · 2026-08-22
MCP 2026 protocol adoption and page continuation · eurlex_get_document returns continuation enrichment for capped body windows · MCP 2026-07-28, strict tool inputs, and structured error envelopes via…
v0.9.8 · 2026-07-16
SPARQL result cap enforces the outermost LIMIT · Fixed: · eurlex_query_sparql result cap now bounds the outermost (brace-depth 0) LIMIT instead of the first in the query text, so a subselect no longer leaves the outer…
v0.9.7 · 2026-07-16
query_echo effective result-shaping flags · Added: · query_echo echoes effective include_consolidated (eurlex_search_documents) and include_derivative (eurlex_get_cases) after defaults, in structuredContent and…
04 · Who maintains Eur Lex MCP Server
eur-lex-mcp-server is maintained by cyanheads. We track 125 MCP servers from cyanheads - 124 actively maintained, 1,730 combined GitHub stars, oldest repo from Dec 2024. Full record: all servers from cyanheads.
- mcp-ts-core Agent-native TypeScript framework for building MCP servers with declarative definitions. ★ 148
- obsidian-mcp-server Read, write, search, and surgically edit Obsidian notes, tags, and frontmatter via MCP. ★ 668
- git-mcp-server Comprehensive Git MCP server enabling native git tools including clone, commit, worktree, & more. ★ 235
- pubmed-mcp-server Search PubMed/Europe PMC, fetch articles and full text (PMC/EPMC/Unpaywall), citations, MeSH terms. ★ 137
- clinicaltrialsgov-mcp-server Search ClinicalTrials.gov - find studies, retrieve results, match patients to eligible trials. ★ 90
- mcp-ts-template TypeScript template for building MCP servers with declarative tooling, observability, and auth. ★ 148
05 · Facts
- repository
- github.com/cyanheads/eur-lex-mcp-server
- category
- other - ranked #153 of 848 actively-maintained other servers as of 2026-08-25.
- release cadence
- 10+ releases in the last 90 days (latest 2026-08-22)
- registry
- io.github.cyanheads/eur-lex-mcp-server (active, first published 2026-06-05 · 30 versions)
- packages
- npm:@cyanheads/eur-lex-mcp-server · npm:@cyanheads/eur-lex-mcp-server
06 · Eur Lex MCP Server FAQ
Is Eur Lex MCP Server still maintained?
Yes - as of 2026-08-25, its last commit was 2026-08-22 and it shipped 10+ releases in the last 90 days. We re-verify nightly.
What can Eur Lex MCP Server do?
With this server connected, an agent can fetch structured metadata and full text (HTML, Markdown, or Formex4 XML) for a work by CELEX number or ELI URI, resolve an EU legal citation - a CELEX number or an ELI URI - to the canonical CELLAR work, and execute a raw SPARQL SELECT query against the CELLAR Virtuoso endpoint. Results capped at 100.
How do I install Eur Lex MCP Server?
Run `npx -y @cyanheads/eur-lex-mcp-server`. The README documents 2 environment variables (MCP_TRANSPORT_TYPE, MCP_LOG_LEVEL) to set first. Set MCP_TRANSPORT_TYPE, MCP_LOG_LEVEL before connecting. You can also paste the ready-made client config above.
Does Eur Lex MCP Server require authentication?
No - the endpoint accepted our unauthenticated MCP initialize when probed on 2026-08-25; you can connect without credentials.
07 · Alternatives to Eur Lex MCP Server
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