io.github.matematicsolutions/hr-eli-mcp

hr-eli-mcp

An MCP server for the Croatian Narodne novine official gazette (narodne-novine.nn.hr). It fetches Croatian legislation with European ELI identifiers and verifiable citations.

Part of the MateMatic eu-legal-mcp production line - after PL, DE, AT, ES, FI, IE, NL, SE, FR, LU, DK and CZ. Same citation contract, Narodne novine source. Croatia is ELI-native on the European ELI ontology (data.europa.eu/eli), with JSON-LD metadata per document.

Scope. This MVP lists the documents of a gazette issue, returns per-document metadata from JSON-LD, and fetches the official HTML text. Documents are addressed by year + issue + document number; the gazette is path-based, not keyword search. Coverage 1990-present. Language: Croatian. Every response carries a dataset_note.

Licence. Narodne novine is the official public gazette of Croatia. This connector relays it read-only with attribution and a source_url.

The tools

Every response carries the contract: eli_uri (the European ELI URL, e.g. https://narodne-novine.nn.hr/eli/sluzbeni/2018/42/805), human_readable_citation (title + NN 42/2018), and source_url.

Install

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

uvx hr-eli-mcp

Or from source:

cd hr-eli-mcp
pip install -e .

Configure (Claude Code / any MCP client)

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

Windows 11 with Smart App Control

Smart App Control blocks unsigned executables, which covers uvx.exe, pip.exe and the hr-eli-mcp.exe launcher that pip writes at install time. The python.exe and py.exe from the python.org installer are signed by the Python Software Foundation, so running the module through the interpreter works:

python -m pip install hr-eli-mcp
python -m hr_eli_mcp

pip.exe is blocked for the same reason, so install with python -m pip, not pip install. If python is not on PATH, use the Windows launcher: py -3 -m hr_eli_mcp.

{ "mcpServers": { "hr-eli-mcp": { "command": "python", "args": ["-m", "hr_eli_mcp"] } } }

Do not turn Smart App Control off to work around this - it cannot be re-enabled without reinstalling Windows.

Environment:

• HR_ELI_BASE_URL - default https://narodne-novine.nn.hr
• HR_ELI_CACHE_DIR - default ~/.matematic/cache/hr-eli
• HR_ELI_AUDIT_DIR - default ~/.matematic/audit

No API key. Narodne novine open data is keyless.

Governance

• Public data only - read-only against Narodne novine; no client data leaves the machine.
• Audit log - every tool call appends one JSON line to ~/.matematic/audit/hr-eli-mcp.jsonl.
• Vendor-neutral - talks only to narodne-novine.nn.hr; 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 Narodne novine

Licence

Apache-2.0. © Matematic Solutions / Wieslaw Mazur.