About this API
data.public.lu is the official open-data portal of the Government of Luxembourg, running on the open-source udata platform (the same one behind France's data.gouv.fr). It publishes over 3,000 datasets from more than 200 public organizations — spanning the national budget and statistics, geospatial data, transport and mobility, and more. The REST API under the /api/1/ path lets you search datasets by keyword, fetch a specific dataset's metadata, and list organizations and resources, all returned as JSON. Access is public and requires no key or registration. Portal content is available under CC0 by default, while individual datasets carry their own licenses (most commonly CC0 or CC BY). Full API documentation (Swagger) is available at data.public.lu/api/1/.
Frequently asked questions
Do I need an API key?
No. The portal is public and free — no registration and no API key.
What data does this API return?
Metadata and contents of the Luxembourg government's open datasets: over 3,000 datasets from more than 200 public organizations (budget, statistics, geospatial, transport and more). You can search by keyword or fetch a single dataset, organization or resource. Responses are JSON.
Can this API be called directly from a browser?
Yes — the API returns a CORS header allowing calls from any domain, so it works directly from frontend code (hence the live "Try it" button above).
Who runs this API?
The Government of Luxembourg. The portal runs on the open-source udata platform; full API documentation is available at data.public.lu/api/1/.