Lithuania legal data from official sources, structured for AI and legaltech.
Access 477,849+ Lithuanian laws, regulations, and regulatory materials issued by the Seimas, the government, ministries, statutory agencies, and other authorities, published through the official Register of Legal Acts (Teisės aktų registras, TAR). Search Lithuanian legal data directly or connect it to your AI agent, legaltech product or research workflow through Lawstronaut's API and MCP server. Every record is linked to its official source and structured in the same format used across more than 150 jurisdictions.
477,849+
Lithuania legal records
1
official Lithuanian source portal
1,314
issuing authorities
Daily
updates
SEE IT ANSWER
Which Lithuanian law codifies private law — persons, property, obligations, family, and succession?
The Civil Code of the Republic of Lithuania (Civilinis kodeksas), approved by the Seimas through Law No. VIII-1864 (published 18 July 2000), is the framework statute codifying Lithuanian private law — persons, property, obligations and contracts, family, and succession. The corpus record links to the consolidated text in the official Register of Legal Acts (Teisės aktų registras, TAR).
Source: Lietuvos Respublikos Seimas — e-tar.lt/portal/lt/legalAct/TAR.8A39C83848CB
Retrieved: 2026-09-28 · Version: 1 · Cited in-turn
The official Lithuanian sources we cover
Lawstronaut collects Lithuanian legal materials from the official Register of Legal Acts (Teisės aktų registras, TAR), the single authoritative gateway through which the Seimas, the President, the government, ministries, statutory agencies, and municipal bodies promulgate binding legal acts. Each record links back to its original source, with metadata such as issuing authority, publication date, legal link, portal, content type, and version where available.
Source categories: the official register of legal acts · parliament (Seimas) · government and ministerial acts · statutory agencies and regulators · municipal and local authority acts
- Register of Legal Acts (Teisės aktų registras, e-TAR) — e-tar.lt
- Seimas of the Republic of Lithuania
- Ministry of Justice (Teisingumo ministerija)
- Bank of Lithuania (Lietuvos bankas)
- Competition Council (Konkurencijos taryba)
- State Data Protection Inspectorate (Valstybinė duomenų apsaugos inspekcija, VDAI)
- Communications Regulatory Authority (RRT)
- Constitutional Court (Konstitucinis Teismas)
- Supreme Court of Lithuania (Lietuvos Aukščiausiasis Teismas)
- Supreme Administrative Court of Lithuania (Lietuvos vyriausiasis administracinis teismas)
- Administrative Court
Lithuanian legal source types covered
Lithuanian legal coverage includes primary legislation, secondary legislation, regulatory materials, and legislative history where available, drawn from the Register of Legal Acts (TAR).
Legislation & Regulations
Laws (įstatymai), codes (kodeksai) such as the Civil Code and Labour Code, government resolutions (Vyriausybės nutarimai), and ministerial orders (įsakymai), taken directly from the official Register of Legal Acts (Teisės aktų registras, TAR).
Legislative History
Draft laws, decrees, and parliamentary and government materials from the Seimas, the President, and the Government as published in TAR, where available, version by version, each tied to its source.
Regulatory Guidance & Enforcement
Resolutions, orders, rules, and decisions from Lithuanian ministries and statutory agencies — including the State Data Protection Inspectorate (VDAI), the Bank of Lithuania, and the Competition Council — promulgated through the Register of Legal Acts.
Case Law
Decisions from official Lithuanian sources, including the Constitutional Court, the Supreme Court, and the Supreme Administrative Court, where available.
One Lithuanian legal data layer. Four ways to use it.
Lawstronaut API
Query Lithuanian laws, regulations, regulatory guidance, and enforcement materials through a REST API. Use structured metadata, full text, Markdown, source links, and version history to power legaltech products, compliance workflows, and internal research tools.
GET /v2/contents?iso=LT&limit=20Lawstronaut MCP
Connect ChatGPT, Claude, Gemini, Cursor, and other AI agents to Lithuanian legal sources. Questions become live searches against the corpus and return citation-ready answers grounded in official Lithuanian materials — deployable in minutes, with no integration work.
AI Agent Integration
Give your legal AI agent same-turn provenance: it retrieves current Lithuanian legal materials — official source links, metadata, and full text — before generating an answer, with a citation and timestamp on every response.
Build with Lawstronaut
Build Lithuanian legal search, monitoring, compliance, research, and legal AI features without crawling, parsing, normalizing, and updating official sources yourself. We handle source discovery, ingestion, normalization, versioning, and change detection; you build the product.
What you can do with Lithuanian legal data
- Retrieve legal metadata, full text, Markdown, source links, and original source files where available
- Filter by jurisdiction, portal, issuing authority, authority type, language, status, and dates
- Access official legal links for citation and audit trails — citation, timestamp, and source link returned in the same turn
- Track point-in-time versions and article-level changes across Lithuanian legal materials
- Run Horizon Scanning — track what changed in Lithuanian law, when, and where, without manual monitoring
- Connect AI agents to official Lithuanian sources through MCP; use the API for search, monitoring, compliance, and AI ingestion workflows
- Build internal Lithuanian legal research tools without maintaining your own crawler stack
Why Lawstronaut for Lithuanian legal research
Lithuanian legal information is consolidated in the Register of Legal Acts, but the acts within it issue from the Seimas, the President, the government, dozens of ministries and statutory agencies, and municipal authorities. For humans, that means slow research across more than a thousand issuing authorities. For AI systems, it's a bigger problem: inconsistent formats, missing provenance, and weak citation trails.
Lawstronaut turns those sources into one structured legal data layer — source links, metadata, full text, versioning, and API/MCP access. Your product or agent retrieves the legal source directly instead of relying on generic web search or unverified model memory. Every answer carries a citation, a timestamp, and a link to the official document — the provenance that makes a legal research platform defensible to auditors and regulators.
About Lithuania legal coverage
Lithuania is a civil-law jurisdiction and a European Union member state, with a legal system rooted in continental European tradition and substantially recodified after independence in 1990. Primary legislation — laws (įstatymai), codes, and government resolutions — is promulgated through the Register of Legal Acts (Teisės aktų registras, TAR), maintained by the Seimas, which replaced the former official gazette Valstybės žinios on 1 January 2014. Acts flow into TAR from more than a thousand issuing authorities, including the Seimas, the President, the Government, ministries, and statutory bodies such as the Bank of Lithuania, the Competition Council, and the State Data Protection Inspectorate. Legal materials are published in Lithuanian.
Lithuanian law changes continually: the Civil Code in force since 1 July 2001 and the Labour Code (Law No. XII-2603, effective 1 July 2017) have both been amended repeatedly, and EU-driven reforms — from GDPR implementation to financial-services rules supervised by the Bank of Lithuania — land as new consolidated versions in TAR. Citations to superseded provisions can simply be wrong, so point-in-time data straight from the source is what keeps a Lithuania legal research answer correct today.
Built for
Legaltech companies
Build Lithuanian legal search, monitoring, drafting, compliance, and AI research features without maintaining your own legal source pipeline.
Compliance & GRC teams
Monitor Lithuanian regulatory materials, guidance, enforcement updates, and legal changes across official sources — without a manual monitoring rota.
AI builders
Ground legal AI answers in official Lithuanian legal text, source links, and metadata — answers that survive an auditor.
Internal legal teams
Give lawyers and business users faster access to Lithuanian legal sources through AI agents and internal tools, without hiring a researcher per jurisdiction.
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Start building with Lithuanian legal data today
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