dk-eli-mcp

dk-eli-mcp

An MCP server for the Danish Retsinformation legal database (retsinformation.dk). Itfetches Danish legislation as LexDania 2.1 XML behind native ELI URIs, with verifiablecitations.

Part of the MateMatic eu-legal-mcp production line - after PL, DE, AT, ES, FI, IE, NL, SE, FRand LU. Same citation contract, Retsinformation source. Denmark is ELI-native: every documenthas a stable data.europa.eu/eli-typed identifier exposed as a retsinformation.dk/eli/... URL.

Scope. This MVP grounds Danish documents by ELI coordinate (year + number in the ltacollection = Lovtidende A) or by accession number, and lists documents changed on a date. TheAPI is path-based, not keyword search. It covers laws (LOV), consolidated laws (LBK), executiveorders (BEK), circulars (CIR) and guidelines (VEJ). Language: Danish. Every response carries adataset_note.

Licence of the data. Danish legislation in Retsinformation is official public informationpublished as Open Data (keyless). This connector relays it with attribution and a source_url.

The tools

Every response carries the contract: eli_uri (a full ELI URL, e.g.https://www.retsinformation.dk/eli/lta/2018/502), human_readable_citation(e.g. Databeskyttelsesloven (LOV nr. 502 af 23/05/2018)), and source_url.

Install

Run it with no install step (once published to PyPI):

uvx dk-eli-mcp

Or from source:

cd dk-eli-mcp
pip install -e .

Configure (Claude Code / any MCP client)

{
  "mcpServers": {
    "dk-eli-mcp": { "command": "dk-eli-mcp" }
  }
}

Environment:

• DK_ELI_BASE_URL - default https://www.retsinformation.dk
• DK_ELI_API_URL - default https://api.retsinformation.dk (harvest API)
• DK_ELI_CACHE_DIR - default ~/.matematic/cache/dk-eli
• DK_ELI_AUDIT_DIR - default ~/.matematic/audit

No API key. Retsinformation open data is keyless.

The harvest API behind dk_recent_changes is only available 03:00-23:45 Danish time. Outsidethat window the tool returns an upstream_error; an empty list during the window means nothingchanged on that date.

Governance

• Public data only - read-only against Retsinformation; no client data leaves the machine.
• Audit log - every tool call appends one JSON line to ~/.matematic/audit/dk-eli-mcp.jsonl.
• Vendor-neutral - talks only to retsinformation.dk; no LLM provider, no telemetry.
• Verifiable citations - every response is independently checkable via source_url.

See CONSTITUTION.md and DISCOVERY.md.

Tests

pip install -e ".[dev]"
pytest tests/test_instructions_drift.py tests/test_parse.py -v   # offline
pytest tests/test_smoke.py -v                                    # hits live Retsinformation

Licence

Apache-2.0. © Matematic Solutions / Wieslaw Mazur.