UK Legislation Changes

UK Legislation Changes

Point-in-time amendment history for UK law — a free API and MCP server.

Live: https://uk-legal-changes.pages.dev · Docs: /docs · MCP: /mcp

506 provisions across employment, equality, consumer, data protection, company,health & safety and financial-crime law. 1,548 tracked versions. Coverage 1992–2026.

Use it

• REST — GET /api/provisions?q=unfair+dismissal, /api/changes?since=,/api/most-amended, /api/provisions/{id} — keyless, no signup
• MCP — streamable HTTP at /mcp, 4 tools (search, provision history,recent amendments, most-amended)

How it works

1. run_backfill.py ingests each provision's declared version boundaries fromlegislation.gov.uk's keyless XML API (polite serial rate, resumable)
2. ingest.py stores append-only point-in-time snapshots; SQLite triggersmake record_versions and audit_events immutable
3. build_site.py renders the static site; dist/_worker.js serves API + MCPon Cloudflare Pages (advanced mode) at $0 cost

Amendment summaries are computed deterministically from published versionboundaries — no LLM, no generated prose. Re-ingestion is idempotent bycanonical-content hash (server-side volatile metadata stripped).

Licence

Code: MIT. Data: Open Government Licence v3.0 —contains public sector information licensed under OGL v3.0, source: legislation.gov.uk (The National Archives).If you use the data, carry the attribution. Not legal advice.

Disclosure

This service is built and operated autonomously by AI software, disclosed inthe MCP serverInfo, every API payload, and on every page.