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§ 59 · AI & quality

New: the Rechtsbibliothek — a searchable legal knowledge graph

Statutes and court decisions, cross-linked and searchable — and a guardian that checks the AI's citations against real sources. Built on official and open sources that we name transparently.

3 minAI & quality
Symbolic image: a network of connected nodes – statutes and decisions as a knowledge graph

In one sentence

We have launched a searchable Rechtsbibliothek: our own legal knowledge graph of statutes and court decisions that are cross-linked with one another — and that checks the AI's citations against real sources.

What it is

Hundreds of thousands of court decisions and the major German federal statutes — down to the individual section — are now available as a knowledge graph. Every decision shows which statutes and rulings it cites, and by whom it is cited in turn. This lets you click from § 823 of the German Civil Code (BGB) to a German Federal Court of Justice (BGH) ruling that cites it, and on to that ruling's own sources, just like in a legal reference work.

Why this matters

The graph is also a guardian against fabricated citations: before the AI names a statute or a case number, it is checked against this database. If the source cannot be found, we say so honestly. "Not in our database" explicitly does not mean "does not exist" — only a portion of German case law is published at all.

Right there where it counts

The most frequently cited decisions are available in full text right away. Less common items are loaded from the official source on first access and then stored permanently — so the database grows with actual usage, not in advance.

Where the data comes from

We deliberately rely on official and open sources, and we name them transparently: the statutory texts come from Gesetze im Internet (Germany's Federal Ministry of Justice / juris), and the decision and citation data from OpenLegalData, licensed under the Open Database License (ODbL) v1.0. The statutes and rulings themselves are official works in the public domain (§ 5 of the German Copyright Act, UrhG).

Lexi, digitale Rechts-Assistenz

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