ChatGPT with Polish and EU law at the source
Since 2 November 2026 Repertorium has been in the ChatGPT plugin directory. Once installed, ChatGPT searches for provisions and judgments in a corpus of law, and gives the document identifier and the place in the text for every result.
Repertorium in the ChatGPT plugin directory
01How to install
- Open the Repertorium entry in the plugin directory and install the plugin.
- Enter your email address, then the 6-digit code from the message. The message with the code contains no link.
- Confirm consent. ChatGPT gets read-only access to the database.
If you cannot see the install button, check whether your plan and workspace settings allow plugins. The fallback, your own MCP server added by hand, is described on the connector page.
02What it looks like in a conversation
We ran the first test after the entry went live, on 2 November 2026, on an account that installed the plugin from the public directory, as any user would. ChatGPT called the Repertorium search and quoted art. 415 k.c. (Article 415 of the Civil Code) accurately.
For a first question, a provision you know by heart works best, because you see at once whether the assistant went to the source:
Check art. 415 k.c. in Repertorium and give the consolidated text it comes from.
You can ask in English. The Polish corpus is in Polish, so keep Polish citation forms, or ask ChatGPT to search in Polish. More in the user guide.
03What ChatGPT finds through Repertorium
- provisions in the consolidated text in force, and which text of an act was in force on the day of an event,
- judgments of the common courts, the Supreme Court, the administrative courts, the National Appeal Chamber (KIO) and the Constitutional Tribunal (up to 2015),
- tax rulings and decisions of the competition authority (UOKiK) and the data protection authority (UODO),
- EU law and CJEU case law, together with the directives a Polish statute implements,
- citations: what a document cites, who cites it, and whether a line of case law is still alive.
Ten questions Repertorium answers, and ready-made prompts: user guide.
04Confidentiality
The query and the answer are seen by OpenAI, the company that runs ChatGPT. Searching the law needs no names, companies or matter details, so leave them out. What we store on our side: connector page.
05Questions
How much does it cost?
A Repertorium account is free, with a call limit. Current limits: connector page.
Is this an official OpenAI plugin?
No. It is a MateMatic plugin that OpenAI approved for the directory after a two-week review.
Does Repertorium see my conversations and files?
No. It receives only the database query, and it only reads.
Using Claude?
Repertorium for Claude. Same account, same corpus.