50 free queries/day · no card required · OAuth signup at ansvar.eu/gateway
One endpoint, one OAuth signup, access from any MCP-compatible client.
Claude Code (one line):
claude mcp add ansvar --transport http https://gateway.ansvar.eu/mcpClaude Desktop / Cursor — add to claude_desktop_config.json (or mcp.json):
{
"mcpServers": {
"ansvar": {
"type": "url",
"url": "https://gateway.ansvar.eu/mcp"
}
}
}Claude.ai — Settings → Connectors → Add custom connector → paste https://gateway.ansvar.eu/mcp
First request opens an OAuth flow at ansvar.eu/gateway. After signup, your client is bound to your account; tier (free / premium / team / company) determines fan-out, quota, and which downstream MCPs are reachable.
You can also clone this repo and build the corpus yourself. The schema, fetcher, and tool implementations all live here. What is not in the repo is the pre-built database — TDM and standards-licensing constraints on the upstream sources mean we host the corpus on Ansvar infrastructure rather than redistribute it as a public artifact.
Build your own: run this repo's ingestion script (entry-point varies per
repo — typically scripts/ingest.sh, npm run ingest, or make ingest;
check the repo root).
The legislation.gov.uk alternative for the AI age.
Query 3,241 UK statutes -- from the UK GDPR and Computer Misuse Act to the Employment Rights Act, Companies Act, and more -- directly from Claude, Cursor, or any MCP-compatible client.
If you're building legal tech, compliance tools, or doing UK legal research, this is your verified reference database.
Built by Ansvar Systems -- Stockholm, Sweden
UK legal research is scattered across legislation.gov.uk, BAILII, and EUR-Lex retained EU law indexes. Whether you're:
- A lawyer validating citations in a brief or contract
- A compliance officer checking if a statute is still in force or has been amended post-Brexit
- A legal tech developer building tools on UK law
- A researcher tracing legislative history from Bill to Act
...you shouldn't need dozens of browser tabs and manual PDF cross-referencing. Ask Claude. Get the exact provision. With context.
This MCP server makes UK law searchable, cross-referenceable, and AI-readable.
Once connected, just ask naturally:
- "What does the UK GDPR say about data subject rights?"
- "Is the Computer Misuse Act still in force?"
- "Find provisions about employment rights under the Employment Rights Act 1996"
- "What EU adequacy status does the UK hold post-Brexit?"
- "Which UK laws implement the equivalent of the NIS2 Directive?"
- "Get the text of Section 7 of the Data Protection Act 2018"
- "Compare data breach notification requirements across UK GDPR and DPA 2018"
- "Validate the citation 'Computer Misuse Act 1990, s.1'"
| Category | Count | Details |
|---|---|---|
| Statutes | 3,241 statutes | Acts of Parliament from legislation.gov.uk |
| Provisions | 512,651 sections | Full-text searchable with FTS5 |
| Case Law | 65,026 judgments | Premium tier -- court decisions and tribunal rulings |
| Preparatory Works | 3,838 documents | Explanatory Notes and Hansard references |
| Database Size | ~3,606 MB | Comprehensive SQLite, includes full provision text |
| Daily Updates | Automated | Freshness checks against legislation.gov.uk |
Verified data only -- every citation is validated against official sources (legislation.gov.uk). Zero LLM-generated content.
Verbatim Source Text (No LLM Processing):
- All statute text is ingested from legislation.gov.uk official sources
- Provisions are returned unchanged from SQLite FTS5 database rows
- Zero LLM summarization or paraphrasing -- the database contains statute text, not AI interpretations
Smart Context Management:
- Search returns ranked provisions with BM25 scoring (safe for context)
- Provision retrieval gives exact text by Act name and section number
- Cross-references help navigate without loading everything at once
Technical Architecture:
legislation.gov.uk API --> Parse --> SQLite --> FTS5 snippet() --> MCP response
^ ^
Provision parser Verbatim database query
| Traditional Approach | This MCP Server |
|---|---|
| Search legislation.gov.uk by Act name | Search by plain English: "data subject access request" |
| Navigate multi-part statutes manually | Get the exact provision with context |
| Manual cross-referencing between Acts | build_legal_stance aggregates across sources |
| "Is this statute still in force?" -- check manually | check_currency tool -- answer in seconds |
| Find EU alignment -- dig through retained EU law index | get_eu_basis -- linked EU instruments instantly |
| Check 5+ sites for amendments | Daily automated freshness checks |
| No API, no integration | MCP protocol -- AI-native |
Traditional: Search legislation.gov.uk --> Download PDF --> Ctrl+F --> Cross-reference with Explanatory Notes --> Check for amendments --> Repeat
This MCP: "What does the UK GDPR say about data subject rights and how does it differ from the EU GDPR?" --> Done.
| Tool | Description |
|---|---|
search_legislation |
FTS5 search on 512,651 provisions with BM25 ranking |
get_provision |
Retrieve specific provision by Act name and section number |
validate_citation |
Validate citation against database (zero-hallucination check) |
build_legal_stance |
Aggregate citations from statutes, case law, and preparatory works |
format_citation |
Format citations per UK conventions (full/short/pinpoint) |
check_currency |
Check if statute is in force, amended, or repealed |
list_sources |
List all available statutes with metadata and data provenance |
about |
Server info, capabilities, dataset statistics, and coverage summary |
| Tool | Description |
|---|---|
get_eu_basis |
Get EU instruments that UK statutes derive from or align with |
get_uk_implementations |
Find UK laws implementing or derived from a specific EU act |
search_eu_implementations |
Search EU documents with UK implementation and retention counts |
get_provision_eu_basis |
Get EU law references for a specific UK provision |
validate_eu_compliance |
Check UK implementation or adequacy status against EU directives |
The UK left the EU on 31 January 2020. The relationship between UK law and EU law is now one of adequacy and alignment, not membership.
| Topic | Status |
|---|---|
| EU Adequacy Decision | UK holds GDPR Article 45 adequacy decisions for England, Wales, Scotland, Northern Ireland, and Gibraltar (granted June 2021) |
| Retained EU Law | Significant body of EU-derived law was retained at exit under the European Union (Withdrawal) Act 2018, now progressively reviewed |
| UK GDPR | Near-identical to EU GDPR with UK-specific modifications -- the EU tools show alignment between UK GDPR and EU GDPR |
| NIS Regulations | UK implemented NIS before Brexit; UK NIS 2 equivalent under development |
The EU bridge tools in this MCP let you trace which UK statutes derive from EU directives, which provisions align with EU regulatory requirements, and where post-Brexit divergence has occurred.
Note: EU cross-references reflect derivation and alignment relationships. The UK is no longer subject to EU law, but understanding the EU origin of UK statutes is essential for cross-border compliance work.
All content is sourced from authoritative UK legal databases:
- legislation.gov.uk -- The official UK legislation database (National Archives)
- BAILII -- British and Irish Legal Information Institute (case law, premium tier)
| Field | Value |
|---|---|
| Authority | The National Archives / King's Printer |
| Retrieval method | legislation.gov.uk API |
| Language | English |
| License | Open Parliament Licence / Open Government Licence |
| Coverage | 3,241 Acts from legislation.gov.uk |
A daily GitHub Actions workflow monitors legislation.gov.uk for changes:
| Check | Method |
|---|---|
| Statute amendments | Drift detection against known provision anchors |
| New statutes | Comparison against legislation.gov.uk index |
| Repealed statutes | Status change detection |
Verified data only -- every citation is validated against official sources. Zero LLM-generated content.
This project uses multiple layers of automated security scanning:
| Scanner | What It Does | Schedule |
|---|---|---|
| CodeQL | Static analysis for security vulnerabilities | Weekly + PRs |
| Semgrep | SAST scanning (OWASP top 10, secrets, TypeScript) | Every push |
| Gitleaks | Secret detection across git history | Every push |
| Trivy | CVE scanning on filesystem and npm dependencies | Daily |
| Docker Security | Container image scanning + SBOM generation | Daily |
| Socket.dev | Supply chain attack detection | PRs |
| OSSF Scorecard | OpenSSF best practices scoring | Weekly |
| Dependabot | Automated dependency updates | Weekly |
See SECURITY.md for the full policy and vulnerability reporting.
THIS TOOL IS NOT LEGAL ADVICE
Statute text is sourced from legislation.gov.uk (The National Archives). However:
- This is a research tool, not a substitute for professional legal counsel
- Court case coverage is in the premium tier -- do not rely solely on this for case law research without the premium database
- Verify critical citations against primary sources for court filings
- EU cross-references reflect derivation and alignment, not current EU membership
- Northern Ireland has specific post-Brexit legal arrangements (Windsor Framework) that may not be fully reflected
Before using professionally, read: DISCLAIMER.md | PRIVACY.md
Queries go through the Claude API. For privileged or confidential matters, use on-premise deployment. See PRIVACY.md for Law Society compliance guidance.
For guidance from your bar association: The Law Society (England & Wales) | Law Society of Scotland | Law Society of Northern Ireland
- EU Integration Guide -- Detailed EU cross-reference documentation
- EU Usage Examples -- Practical EU lookup examples
- Security Policy -- Vulnerability reporting and scanning details
- Disclaimer -- Legal disclaimers and professional use notices
- Privacy -- Client confidentiality and data handling
git clone https://github.com/Ansvar-Systems/UK-law-mcp
cd UK-law-mcp
npm install
npm run build
npm testnpm run dev # Start MCP server
npx @anthropic/mcp-inspector node dist/index.js # Test with MCP Inspectornpm run ingest # Ingest statutes from legislation.gov.uk
npm run build:db # Rebuild SQLite database
npm run drift:detect # Run drift detection against anchors
npm run check-updates # Check for amendments and new Acts- Search Speed: <100ms for most FTS5 queries
- Database Size: ~3,606 MB (comprehensive -- full UK statute corpus)
- Reliability: 100% ingestion success rate across 3,241 statutes
Full fleet at ansvar.eu/gateway.
Contributions welcome! See CONTRIBUTING.md for guidelines.
Priority areas:
- Court case law expansion (BAILII integration)
- Northern Ireland-specific legal provisions
- Scottish law divergence tracking
- Historical statute versions and amendment tracking
-
Core statute database with FTS5 search
-
Full corpus ingestion (3,241 statutes, 512,651 provisions)
-
EU/international law alignment tools
-
Vercel Streamable HTTP deployment
-
Daily freshness checks against legislation.gov.uk
-
Premium case law (65,026 judgments)
-
Premium preparatory works (3,838 documents)
-
Northern Ireland Windsor Framework annotations
-
Scottish law divergence markers
-
Historical statute versions (amendment tracking)
-
Welsh language provision coverage
If you use this MCP server in academic research:
@software{uk_law_mcp_2026,
author = {Ansvar Systems AB},
title = {UK Law MCP Server: Production-Grade Legal Research Tool},
year = {2026},
url = {https://github.com/Ansvar-Systems/UK-law-mcp},
note = {3,241 UK statutes with 512,651 provisions sourced from legislation.gov.uk}
}Apache License 2.0. See LICENSE for details.
- Statutes & Legislation:
OGL-3.0— UK Crown copyright under CDPA 1988 ss. 163–164 with an explicit Open Government Licence v3.0 grant on legislation.gov.uk. UK is NOT a statutory-PD regime; the open-licence grant is the operative permission. Commercial reuse permitted with attribution; no share-alike. Required attribution text: "Contains public sector information licensed under the Open Government Licence v3.0." UK Parliamentary content (Hansard, bills) is Parliamentary copyright (not Crown copyright) and falls under the separate Open Parliament Licence v3.0. Verified 2026-05-17. - Case Law: BAILII (used under terms of service, premium tier)
- EU Metadata: EUR-Lex (EU public domain)
We build AI-accelerated compliance and legal research tools for the global market. This MCP server makes 3,241 UK statutes searchable from any AI client -- no browser tabs, no PDFs, no manual cross-referencing.
ansvar.eu -- Stockholm, Sweden
Built with care in Stockholm, Sweden