https://github.com/matematicsolutions/fr-eli-mcp
MCP server for the French Legifrance API via PISTE — search legislation (LODA, codes) and case law (JURI) with verifiable citations and native ECLI. Part of the eu-legal-mcp line.
https://github.com/matematicsolutions/fr-eli-mcp
ai-agent ecli eli france legal legaltech legislation mcp mcp-server model-context-protocol
Last synced: 17 days ago
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MCP server for the French Legifrance API via PISTE — search legislation (LODA, codes) and case law (JURI) with verifiable citations and native ECLI. Part of the eu-legal-mcp line.
- Host: GitHub
- URL: https://github.com/matematicsolutions/fr-eli-mcp
- Owner: matematicsolutions
- License: apache-2.0
- Created: 2026-06-24T13:13:34.000Z (about 1 month ago)
- Default Branch: main
- Last Pushed: 2026-07-07T13:03:37.000Z (20 days ago)
- Last Synced: 2026-07-07T15:07:10.442Z (20 days ago)
- Topics: ai-agent, ecli, eli, france, legal, legaltech, legislation, mcp, mcp-server, model-context-protocol
- Language: Python
- Size: 81.1 KB
- Stars: 1
- Watchers: 0
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# fr-eli-mcp
## Instalacja (jedna komenda)
Opublikowany na PyPI + MCP Registry (`io.github.matematicsolutions/fr-eli-mcp`). Uruchomienie bez klonowania:
```bash
uvx fr-eli-mcp
```
Wymaga kluczy PISTE w env: `PISTE_CLIENT_ID`, `PISTE_CLIENT_SECRET` (Legifrance/PISTE).
Konfiguracja klienta MCP (stdio):
```json
{ "mcpServers": { "fr-eli-mcp": { "command": "uvx", "args": ["fr-eli-mcp"] } } }
```
(Budowanie ze źródeł — niżej.)
An MCP server for the **French Legifrance API** via [PISTE](https://piste.gouv.fr). It searches
French legislation (LODA laws & decrees, codes), case law from three jurisdictions - Cour de
cassation / cours d'appel (JURI), the **Conseil constitutionnel** (CONSTIT - QPC/DC decisions) and
the **administrative courts** (CETAT - Conseil d'Etat, cours administratives d'appel, tribunaux
administratifs) - plus **CNIL deliberations** (CNIL), **collective labour agreements** (KALI) and
**company-level agreements** (ACCO), and returns verbatim text with verifiable citations. Part of
the **eu-legal-mcp** line of national legal connectors by [MateMatic](https://matematic.co).
Every response carries the citation contract: a stable `eli_uri`, a `human_readable_citation`
(French convention) and a resolvable `source_url`.
> **Read-only.** The server only queries Legifrance and writes a local audit log. It never modifies
> official text and never sends anything beyond your query / document id.
## Tools
| Tool | What it does |
| --- | --- |
| `fr_search(query, fond, page_size)` | Keyword search a `fond`: `LODA` (laws & decrees), `CODE` (codes), `JURI` (Cour de cassation case law), `CONSTIT` (Conseil constitutionnel decisions), `CETAT` (administrative case law: Conseil d'Etat, CAA, TA), `CNIL` (CNIL deliberations), `KALI` (collective labour agreements), `ACCO` (company-level agreements). Returns hits with the citation contract; `CODE` hits expose matched `article_id`s. |
| `fr_get_act(text_id, date)` | Consult a LODA law/decree by `LEGITEXT...` id. Returns metadata + a table of contents (`articles`). |
| `fr_get_text(article_id)` | Verbatim text of a single article by `LEGIARTI...` id (legislation/codes) or `KALIARTI...` id (collective agreements). |
| `fr_get_decision(decision_id)` | A court decision by `JURITEXT...`, `CONSTEXT...` or `CETATEXT...` id, with its **native `ecli`** (when populated), court, formation, solution and text. |
| `fr_get_deliberation(deliberation_id)` | A CNIL deliberation by `CNILTEXT...` id (sanctions, authorizations, opinions) with its verbatim text and the citation `CNIL, deliberation n° ... du ...`. |
| `fr_get_convention(convention_id)` | A collective labour agreement text by `KALITEXT...` id. Returns metadata + a table of contents whose `KALIARTI...` ids resolve via `fr_get_text`. |
| `fr_get_company_agreement(agreement_id)` | A company-level agreement by `ACCOTEXT...` id - **metadata only** (company, SIRET, IDCC, sector, themes, unions, dates). Legifrance ships the full ACCO text only as a `.docx` attachment, so the tool cites `source_url` instead of re-serving it. |
### Fonds covered (live totals, sandbox, 2026-07-08)
| Fond | Corpus | Verified total |
| --- | --- | --- |
| `CNIL` | CNIL deliberations | >= 26 759 (`totalResultNumber` on a broad stopword query) |
| `KALI` | Collective labour agreements (conventions collectives) | >= 35 790 |
| `ACCO` | Company-level agreements | >= 387 656 |
### Jurisdictions covered
| Fond | Court(s) | Id prefix | Native ECLI |
| --- | --- | --- | --- |
| `JURI` | Cour de cassation, cours d'appel | `JURITEXT...` | Yes |
| `CONSTIT` | Conseil constitutionnel (QPC + DC decisions, ~7 400+ live on PISTE) | `CONSTEXT...` | Yes (`ECLI:FR:CC:...`) |
| `CETAT` | Conseil d'Etat, cours administratives d'appel (CAA), tribunaux administratifs (TA) | `CETATEXT...` | Yes for Conseil d'Etat; frequently `null` for CAA/TA (uneven ECLI coverage upstream - never fabricated) |
Conseil constitutionnel decisions get the French citation convention: `Cons. const., decision n°
2025-1173 QPC du 7 novembre 2025 - [case name]`. JURI/CETAT decisions cite the Legifrance `titre`
(court, formation, date, dossier number) verbatim.
> **Judilibre** (`api.piste.gouv.fr/cassation/judilibre`) was evaluated as an alternative Cour de
> cassation source but requires its own PISTE API subscription beyond the Legifrance one already
> held by this connector. Re-verified 2026-07-08: a valid Legifrance token (granted scope
> `openid resource.READ`) gets `403` on the sandbox host for every endpoint and auth shape tried
> (`Bearer`, `KeyId`, no-auth -> `400`), and the sandbox application is rejected outright by the
> production OAuth endpoint (`invalid_client`). Subscribing the Judilibre API to the PISTE
> application is a dashboard action outside this connector. Not integrated - `JURI` already covers
> Cour de cassation case law through the existing Legifrance subscription.
### A note on ELI vs ECLI
France has an official ELI scheme, but the PISTE `lf-engine-app` **consult API returns the native
ELI field `null` for the legislation we tested**. Following this line's rule - *say what you do not
have, never fabricate an ELI* - `eli_uri` carries the **stable, resolvable Legifrance resource URL**
(CID-keyed), not a `/eli/...` string parsed from prose. Each response repeats this in `eli_note`.
Case law is different: the API returns a **native, authoritative ECLI** for Cour de cassation (e.g.
`ECLI:FR:CCASS:2025:C100399`), Conseil constitutionnel (e.g. `ECLI:FR:CC:2025:2025.1173.QPC`) and
Conseil d'Etat (e.g. `ECLI:FR:CECHR:2026:506507.20260529`), surfaced verbatim in `fr_get_decision`.
CAA/TA decisions under `CETAT` frequently have no ECLI - the field is `null`, never fabricated.
## Configuration
Legifrance requires OAuth2 application credentials from a free PISTE account
(`piste.gouv.fr` → *Applications* → subscribe to the Legifrance API → *OAuth Credentials*).
Credentials are read from the environment only:
| Variable | Meaning |
| --- | --- |
| `FR_ELI_OAUTH_URL` | OAuth token endpoint (sandbox default shown in `.mcp.json.example`). |
| `FR_ELI_BASE_URL` | Legifrance `lf-engine-app` base. |
| `FR_ELI_CLIENT_ID` | Your PISTE application client id (**required**). |
| `FR_ELI_CLIENT_SECRET` | Your PISTE application client secret (**required**). |
| `FR_ELI_CACHE_DIR` | Disk cache dir (default `~/.matematic/cache/fr-eli`). |
| `FR_ELI_AUDIT_DIR` | Audit log dir (default `~/.matematic/audit`). |
Copy `.mcp.json.example` to `.mcp.json` (gitignored) and fill in your credentials, or set the
variables in your host environment. The OAuth token is cached in memory and refreshed automatically.
## Install
```bash
py -3.13 -m venv .venv
.\.venv\Scripts\python.exe -m pip install -e ".[dev]" # Windows
# or: python -m pip install -e ".[dev]" # POSIX
```
## Tests
```bash
pytest tests/test_instructions_drift.py tests/test_parse.py # offline, no creds
pytest tests/test_smoke.py -v # live, needs PISTE creds in .env
```
## Distribution
Because Legifrance requires a PISTE key, this connector is distributed through the **PATRON /
appliance** channel (governed), not casual drop-in download. See the eu-legal-mcp line notes.
## Licence
Apache-2.0. Legifrance content is © the French Republic / DILA and subject to the Legifrance /
PISTE terms of use; this software only retrieves and cites it.