Discover our APIs

In addition to raw datasets, the National Library of Luxembourg offers various web services, Application Programming Interfaces (APIs) and other interfaces to access and query data from its systems.


The BnL is the coordinator of the bibnet.lu national network of Luxembourgish libraries. The InfoBib API offers information about each library in the network: address and opening times, contact information, access conditions etc.

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Catalogue OAI-PMH

The BnL exposes structured metadata in the collective catalogue of the bibnet.lu library network using the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH). The OAI-PMH protocol is a means of exchanging metadata over the Internet between several institutions.

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Catalogue Z39.50

The bibliographic records of the collective catalogue of the bibnet.lu library network are also searchable via the Z39.50 protocol. This protocol meets the ISO 23950 standard, “Information and documentation — Information retrieval (Z39.50) – Application service definition and protocol specification”.

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LiDa is BnL’s first open linked-data project. This project, in collaboration with the Centre national de littérature (National Literature Centre), linked authors and documents from the collective catalogue of the bibnet.lu network to those from the Dictionary of Luxembourgish Authors.

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