UK Legislation Changes

Point-in-time amendment history for UK law — a free API and an MCP server. No API key, no signup, no cost.

Live: https://uk-legal-changes.pages.dev · Docs: /docs · MCP: /mcp · Server card: /.well-known/mcp-server-card · /llms.txt

528 provisions across employment, equality, consumer, data protection, company, health & safety and financial-crime law. 1,598 tracked versions, 1,070 amendments, coverage 1992–2026.

Ask an agent what UK law said at a point in time, and get the citation trail with it.

Connect it in 30 seconds

Any MCP client (Claude Code, Claude Desktop, Continue, …)

npx -y mcp-remote@0.15.2 https://uk-legal-changes.pages.dev/mcp

Cursor — one click

Or drop this in .cursor/mcp.json:

{
  "mcpServers": {
    "uk-legislation-changes": {
      "url": "https://uk-legal-changes.pages.dev/mcp"
    }
  }
}

VS Code

{
  "servers": {
    "uk-legislation-changes": {
      "type": "http",
      "url": "https://uk-legal-changes.pages.dev/mcp"
    }
  }
}

MCP registry / directory

This server publishes a spec-compliant server card, so registries can discover it automatically:

https://uk-legal-changes.pages.dev/.well-known/mcp-server-card

It is published to the official MCP Registry as io.github.busybusybussiness/uk-legislation-changes (manifest in server.json), and is listed on Glama.

Plain REST (no client needed)

curl "https://uk-legal-changes.pages.dev/api/provisions?q=unfair+dismissal"

For AI agents

/llms.txt and /llms-full.txt describe the endpoints, the MCP tools and the licence in a form agents can read directly. /sitemap.xml lists every provision.

The 4 tools

Example prompts that work well:

• "What did the Employment Rights Act say about unfair dismissal in 2015?"
• "Which UK provisions have been amended most since 2020?"
• "List everything that changed in UK employment law in the last 90 days."

REST API (keyless)

# Search provisions
curl "https://uk-legal-changes.pages.dev/api/provisions?q=unfair+dismissal"

# Recent changes across all provisions
curl "https://uk-legal-changes.pages.dev/api/changes?since=2026-01-01"

# Most-amended provisions
curl "https://uk-legal-changes.pages.dev/api/most-amended"

# One provision's full point-in-time history
curl "https://uk-legal-changes.pages.dev/api/provisions/<id>"

No signup, no rate-limit key, no cost.

How it works

1. run_backfill.py ingests each provision's declared version boundaries from legislation.gov.uk's keyless XML API (polite serial rate, resumable)
2. ingest.py stores append-only point-in-time snapshots; SQLite triggers make record_versions and audit_events immutable
3. build_site.py renders the

... View full README on GitHub