Without JavaScript

The JSON files in data/ are the source of truth; the TypeScript only adds types and helpers. You can read them from any language:

• from the npm package (node_modules/be-legal-data/data/);
• as a git submodule;
• from a raw URL pinned to a release tag.

https://raw.githubusercontent.com/pieterjanscheir/be-legal-data/v0.2.0/data/cantons.json

Pin a tag rather than main, so the data only changes when you choose to upgrade.

Python

import json
from urllib.request import urlopen

BASE = "https://raw.githubusercontent.com/pieterjanscheir/be-legal-data/v0.2.0/data"

cantons = json.load(urlopen(f"{BASE}/cantons.json"))

def cantons_for_municipality(refnis: str) -> list[dict]:
    return [c for c in cantons if any(m["municipality"] == refnis for m in c["municipalities"])]

print([c["id"] for c in cantons_for_municipality("44021")])  # gent-1 … gent-5

Interest rates

Periods are inclusive on both ends and dates are YYYY-MM-DD, so string comparison works:

rates = json.load(urlopen(f"{BASE}/interest-rates.json"))

def interest_rate(day: str, kind: str, contract_after_20130316: bool = False) -> float | None:
    for p in rates[kind]["periods"]:
        if p["from"] <= day <= p["to"]:
            older = p.get("rateForContractsBefore20130316")
            return older if older is not None and not contract_after_20130316 else p["rate"]
    return None

Files

File	Contents
data/judicial-areas.json	The 5 judicial areas (courts of appeal)
data/arrondissements.json	The 12 judicial arrondissements and their judicial area
data/cantons.json	All 162 judicial cantons
data/municipalities.json	The 565 municipalities with REFNIS code and province
data/courts.json	Justices of the peace in East and West Flanders, and the divisions of the Ondernemingsrechtbank Gent
data/interest-rates.json	Legal and commercial-transaction interest rates

The shapes are described on the data pages and in the API reference.

Licence

The data is CC BY 4.0: reuse it freely, including commercially, with credit to this project and to the sources listed for each dataset. Municipality data © Statbel.