Comparing Law Across the EU in a Single Query

A cross-border case used to mean commissioning research from a foreign law firm. The Europaius corpus contains legislation from 25 EU countries in their original languages, and the AI can pull the relevant provisions from each country and summarise the differences in English.
Comparing Law Across EU Countries with AI: One Query, 25 Countries
Europaius Ireland: Corpus Contents

The examples in this guide are based on Czech law. The same tools also work with the Europaius Ireland corpus:

3 984
Laws
218
Case law
3 598
Laws with AI explanation

Europaius Ireland → · Search

How the comparison works

The compare_norm tool takes a topic and a list of countries. For each country, it looks up the most relevant provisions in that country's legislation and returns them side by side. The AI then summarises how the rules differ: deadlines, conditions, exceptions. The links lead to the original text, so you can read the disputed point in the original or have it translated.

Example: “Compare the probationary period for employment contracts in Czechia, Germany, Austria and Poland.” The AI returns Section 35 of the Czech Labour Code, Section 622 of the German BGB, the relevant provision of the Austrian AngG, and the Polish Kodeks pracy, and summarises the maximum durations and possibilities for extension.

Country coverage

Czech legislation and case law are covered in full. For other countries, the basis is legislation from official sources (for example gesetze-im-internet.de, Légifrance, Slov-Lex) and case law to the extent that courts publish it in a machine-readable format; for some countries this amounts to hundreds of thousands of decisions, for smaller ones, thousands. The list_states tool gives a current overview, or you can simply ask the AI what it has available for a given country. Bulgaria is not yet included in the corpus.

Working with a foreign language

The AI reads the original text and summarises it in the language you use to ask your question. However, terminology does not translate on a one-to-one basis; the German “Kündigungsfrist” is not always the same as a notice period in Czech law. Ask the AI to give the original term in brackets alongside the reference to the relevant provision for key concepts. For decisive passages, ask for a literal translation rather than a summary.

For countries with multiple languages (Belgium, Luxembourg), the corpus works with the main source language. The link leads to the official portal, which often also contains other language versions.

Typical use cases

Connect Europaius to Your AI
The connector address is the same for all tools. Sign in with your email, done in under two minutes.
https://mcp.europaius.com/mcp
Connection Guide → · Pricing

Frequently Asked Questions

Is the comparison as reliable as research carried out by a local law firm?

It's a fast and verifiable first step, not a substitute for a local lawyer in complex cases. Links to primary sources allow a local lawyer to quickly confirm or supplement the findings.

Why does the AI return few results for a particular country?

Either the topic is regulated under different terminology in that country, or the source coverage is more limited. Try phrasing the query in that country's language or making it broader.

How long does a comparison take?

Usually tens of seconds; for the first query on a given country it may take longer, as extensive databases are being searched.

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All Guides: Laws & Case Law in Claude: Connect via MCP Connector · ChatGPT with Verified Legal Sources: Europaius Connector · Microsoft Copilot and Legal Sources: Europaius MCP Connector · Legal corpus in Claude Code, Cursor and VS Code via MCP · What is an MCP connector and why lawyers need it · Why AI Invents Case Law and How to Prevent It · AI in a Law Firm: Deployment with Verified Sources · AI for Accountants and Tax Advisors: Laws and Case Law · Tenancy Law and AI: Notice, Deposit, Rent Increases by Law · GDPR and AI Compliance: Regulation, Statute and Case Law Combined · Europaius MCP Connector Security: OAuth, Data, Tokens · Custom AI Agent with a Legal Corpus: MCP SDK and API Key · Connector or Uploading a Law as a PDF? A Comparison · Statutory Interpretations in AI: Clear, No Hallucinations · Pricing and Limits of the Europaius MCP Connector

General information only; does not replace legal advice. Connecting the connector requires a Europaius account (free of charge). More About Europaius · Europaius IE