uk-legal-mcp

A Model Context Protocol server for UK legal research. One MCP connection wires your AI assistant into UK case law, legislation, parliamentary debates, bills, votes, committees, OSCOLA citation parsing, and HMRC guidance — every response carrying the metadata you'd need to footnote it.

No API keys required for the legal sources (HMRC's authenticated endpoint is optional).

For best results remind the agent to use the uk-legal-mcp server. The location depends on the agent or setup you are using. It maybe project instructions, MEMORY.md, AGENTS.md etc.

If you face issues refresh the server in the Apps / Customise menu.

Connect

Hosted

Use this URL in any MCP-aware client (Claude, Claude Desktop, VS Code, Cursor, etc.):

https://uk-legal-mcp.fly.dev/mcp

For clients that use mcpServers JSON:

{
  "mcpServers": {
    "uk-legal": {
      "type": "http",
      "url": "https://uk-legal-mcp.fly.dev/mcp"
    }
  }
}

Local install (stdio)

Useful from Claude Desktop on a residential IP — bypasses the legislation.gov.uk WAF that intermittently blocks the hosted server's cloud IP range:

uvx uk-legal-mcp

Claude Desktop config:

{
  "mcpServers": {
    "uk-legal": {
      "command": "uvx",
      "args": ["uk-legal-mcp"]
    }
  }
}

Local development

stdio against your local checkout — spawns a fresh process per MCP connection from the project's [project.scripts] entry, so the source is always read as edited. Replace <abs-path> with the absolute path to your clone:

{
  "mcpServers": {
    "local-uk-legal": {
      "command": "uv",
      "args": ["run", "--project", "<abs-path>", "uk-legal-mcp"],
      "env": { "VIRTUAL_ENV": "" }
    }
  }
}

What's here

Eight namespaced modules covering the UK's primary legal sources:

... View full README on GitHub