recht-mcp

An MCP server for German law: federal statutes and regulations, the Landesrecht of Bayern, Brandenburg, Nordrhein-Westfalen and Sachsen, and court decisions — for AI agents that need to ground a citation, read a provision, or follow the citation graph, and need to know when an answer is not complete.

On 23 October 2026 the corpus held 12,016 statutes and regulations (254,598 provisions, 312,122 stored versions) and 640,401 court decisions from 946 courts, with 7,797,118 citation links from decisions to provisions and to other decisions. getCoverage returns the current figures.

This repository is the tool layer of the hosted server at https://recht.nulegal.eu/v1/mcp. The hosted endpoint runs this code, vendored at a pinned commit, over a private backend that reads the corpus directly; recht-mcp runs the same code locally over the public REST API. The corpus and the database stay on the service side — see docs/DESIGN.md for exactly where the line runs.

The nine tools

Every tool is read-only. Each answer says what it is and what it is not: version dates are first-observed dates, not Inkrafttreten; the norm-version archive has a floor that every norm answer states; a zero from the citation graph on a Land provision is labelled as "not indexed", not "never cited"; and three kinds of miss — not_in_corpus, outside_coverage, known_missing — are never collapsed into one. The full contract of each tool is in its description (tools/list).

Use the hosted server (recommended)

No key, no signup. Point any MCP client that speaks Streamable HTTP at:

https://recht.nulegal.eu/v1/mcp

Claude Code:

claude mcp add --transport http nulegal-recht https://recht.nulegal.eu/v1/mcp

A client configured with JSON:

{
  "mcpServers": {
    "nulegal-recht": { "type": "http", "url": "https://recht.nulegal.eu/v1/mcp" }
  }
}

Developer documentation for the service and its REST API: https://recht.nulegal.eu/developers.

Run it locally

Requires Python 3.12+ and uv. The package has no third-party runtime dependencies.

git clone https://github.com/nulegal-startup/recht-mcp
cd recht-mcp
uv run recht-mcp            # stdio
uv run recht-mcp --http     # Streamable HTTP on http://127.0.0.1:8765/mcp

Or without a checkout:

uvx --from git+https://github.com/nulegal-startup/recht-mcp recht-mcp

A client that launches stdio servers:

{
  "mcpServers": {
    "nulegal-recht": {
      "command": "uvx",
      "args": ["--from", "git+https://github.com/nulegal-startup/recht-mcp", "recht-mcp"]
    }
  }
}

Options: --http, --host (de

... View full README on GitHub