lahend

lahend.ee MCP server

Free, no-API-key MCP server for Estonian law: court decisions, legislation paragraph by paragraph, and EU law in Estonian - with the citation index that links them to each other.

https://lahend.ee/api/lahend-mcp/mcp     (streamable HTTP)
https://lahend.ee/api/lahend-mcp/sse     (SSE)

No key, no sign-up, no rate limit worth mentioning. Data comes from Riigi Teataja, EUR-Lex and HUDOC; company links come from the Estonian Business Register via nimistu.ee.

What it can do

Legislation is served in full, not just case law - each paragraph is addressable on its own, with every ruling that has ever cited it. That link is the point of the server: 3.05 million citations extracted from the decision texts, so you can ask what a statute means in practice rather than what it says.

The corpus is 564,503 rulings. Citations were extracted from 324,968 of them - the rest either cite no statute or state it in a form the extractor does not resolve. Two further coverage limits are worth knowing before you rely on a negative result:

• Companies are linked on ~19% of rulings. Parties are matched by registry code found in the decision text, and many judgments name a company without ever stating its code. An empty companies array means no code was found - not that no company was involved.
• ~26% of rulings carry no asja_kategooria. Filtering search_rulings by category silently excludes them; list_categories reports the uncategorised count alongside the per-category totals.

Case law

Tool	What it does
search_rulings	Full-text ruling search with optional filters: court name, case type (civil/administrative/criminal), area of law (asja_kategooria) and a decision-date range
rulings_by_company	Given an 8-digit Estonian registry code (registrikood), return every court decision that names that company, with its role (claimant/defendant/etc.) and the other parties
recent_rulings	The newest published rulings (by decision date), across all courts and areas of law
list_courts	All Estonian courts that have published decisions, each with its ruling count
list_categories	All areas of law (asja_kategooria) present in the corpus, each with its ruling count

Legislation

Tool	What it does
get_law_section	Return a single § of an Estonian act, addressed the way lawyers cite it: an abbreviation and a number, e.g
search_law_sections	Full-text search across the paragraphs of every in-force Estonian act (4M+ sections)
search_laws	Find Estonian acts by title or abbreviation (KarS, TsMS, VÕS…)
law_versions	List an act's redaktsioonid (consolidated versions) with their validity ranges, newest first

Rulings ↔ statute

Tool	What it does
rulings_citing_section	Given an act abbreviation and a §, return the court decisions that actually cite it, newest first, with a total count
sections_cited_by_ruling	Given a ruling id (from search), list the statute paragraphs it cites, with the lõiked named and each § resolved to its act
most_cited_sections	The statute paragraphs cited by the most court decisions, ranked

EU law in Estonian

Tool	What it does
eu_law_search	Search EU regulations and directives, and Court of Justice / European Court of Human Rights judgments, by Estonian title or case number
eu_act	Fetch an EU regulation or directive by CELEX (e.g
estonian_rulings_citing_eu_law	Given a CELEX (an act like '32016R0679', or a Court of Justice judgment like '62014CJ0362'), return the Estonian court decisions that cite it
eu_law_cited_by_ruling	Given an Estonian ruling id (from search), list the EU instruments it cites - regulations, directives and Court of Justice judgments - with the articles named where the decision names them
most_cited_eu_law	Ranked by how many Estonian decisions cite them

Cross-register

Tool	What it does
authority_documents_for_ruling	Given a ruling id, return documents from Estonian public-authority document registers that name the same companies - procurement files, licences, correspondence, inspections

Generic (ChatGPT/Claude connectors)

Tool	What it does
search	Full-text search across Estonian LAW - both court decisions (civil, administrative and criminal rulings) and legislation (acts and their individual paragraphs), from Riigi Teataja, indexed by lahend.ee
fetch	Retrieve the full text + metadata for any id returned by search

Add it

Claude Code:

claude mcp add --transport http lahend https://lahend.ee/api/lahend-mcp/mcp

Any client that takes a remote MCP URL works the same way. search and fetch are present so the ChatGPT and Claude connector UIs work out of the box; the named tools above are better when you know what you want.

Examples

• "What does TLS § 88 say, and how have the courts applied it?" - get_law_section then rulings_citing_section.
• "Which Estonian decisions apply the GDPR?" - estonian_rulings_citing_eu_law with CELEX 32016R0679.
• "Which provisions does this ruling turn on?" - sections_cited_by_ruling.

Licence

Source data is public. Built and run by Nimistu MTÜ (reg. 80673204), a non-profit; free to use and free of advertising.