io.github.matematicsolutions/lt-eli-mcp
MCP server for Lithuanian legislation (TAR via data.gov.lt) with verifiable citations.
Open source Open in the app JSON README (API)
About
MCP server for Lithuanian legislation (TAR via data.gov.lt) with verifiable citations.
Details
- Kind
- MCP servers
- Topic
- Government & public data
- Publisher
- matematicsolutions
- Origin
- official
- Category
- ferramentas
- Transport
- local
- Version
- 0.3.3
- Last push
- 2026-08-24T13:57:01Z
- Repository state
- ativo
- Language
- Python
- License
- Apache-2.0
- Added
- 2026-08-29 04:00:29
- Updated
- 2026-08-29 04:00:29
- Origin id
io.github.matematicsolutions/lt-eli-mcp
README
# lt-eli-mcp
<!-- mcp-name: io.github.matematicsolutions/lt-eli-mcp -->
An MCP server for the Lithuanian **Register of Legal Acts (TAR)** via the **data.gov.lt** open-data
API. It searches Lithuanian legislation by title and fetches full text, with verifiable citations.
Part of the MateMatic `eu-legal-mcp` production line - after PL, DE, AT, ES, FI, IE, NL, SE, FR,
LU, DK, CZ and HR. Same citation contract, TAR source. This connector reads a REST-JSON open-data
API (the data.gov.lt Spinta endpoint).
> **Scope.** This MVP searches acts by title substring, returns metadata, and fetches the full
> Lithuanian text. ~CC BY 4.0 open data; acts are addressed by their TAR code (`tar_kodas`).
> Language: Lithuanian. Every response carries a `dataset_note`.
>
> **ELI is national, not data.europa.eu.** Lithuania has no `data.europa.eu` ELI for the TAR
> dataset. `eli_uri` carries the canonical `e-tar.lt` legalAct URL (the stable national
> identifier), which is also the `source_url`. Every response carries an `eli_note` saying so.
## The tools
| Tool | What it does |
|---|---|
| `lt_search` | Find acts whose title contains a substring (optionally by type). |
| `lt_get_act` | Metadata for an act by its TAR code. |
| `lt_get_text` | Full Lithuanian text of an act by its TAR code. |
| `lt_coverage` | Declare what this connector covers, when each family was captured, and - explicitly - what it does NOT cover. Every gap carries a fallback. |
Every response carries the contract: `eli_uri` (the `e-tar.lt` URL, e.g.
`https://e-tar.lt/portal/lt/legalAct/...`), `human_readable_citation` (title + official number),
and `source_url`.
## Install
Run it with no install step (once published to PyPI):
```bash
uvx lt-eli-mcp
```
Or from source:
```bash
cd lt-eli-mcp
pip install -e .
```
## Configure (Claude Code / any MCP client)
```json
{
"mcpServers": {
"lt-eli-mcp": { "command": "lt-eli-mcp" }
}
}
```
### Windows 11 with Smart App Control
Smart App Control blocks unsigned executables, which covers `uvx.exe`, `pip.exe`
and the `lt-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:
```bash
python -m pip install lt-eli-mcp
python -m lt_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 lt_eli_mcp`.
```json
{ "mcpServers": { "lt-eli-mcp": { "command": "python", "args": ["-m", "lt_eli_mcp"] } } }
```
Do not turn Smart App Control off to work around this - it cannot be re-enabled
without reinstalling Windows.
Environment:
- `LT_ELI_BASE_URL` - default `https://get.data.gov.lt`
- `LT_ELI_CACHE_DIR` - default `~/.matematic/cache/lt-eli`
- `LT_ELI_AUDIT_DIR` - default `~/.matematic/audit`
No API key. The data.gov.lt open-data API is keyless.
## Governance
- **Public data only** - read-only against data.gov.lt; no client data leaves the machine.
- **Audit log** - every tool call appends one JSON line to `~/.matematic/audit/lt-eli-mcp.jsonl`.
- **Vendor-neutral** - talks only to `get.data.gov.lt`; no LLM provider, no telemetry.
- **Verifiable citations** - every response is independently checkable via `source_url`.
See `CONSTITUTION.md` and `DISCOVERY.md`.
## Tests
```bash
pip install -e ".[dev]"
pytest tests/test_instructions_drift.py tests/test_parse.py -v # offline
pytest tests/test_smoke.py -v # hits live data.gov.lt
```
## Licence
Apache-2.0. © Matematic Solutions / Wieslaw Mazur. TAR data is CC BY 4.0; relayed with attribution
and a `source_url`.