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legal-text-mcp-de

A Python Model Context Protocol server and HTTP API for loading, validating, searching, and resolving German legal texts with source provenance.

Not legal advice

This software returns text and structured metadata. It does not interpret the law, advise on it, or produce any legal conclusion. The maintainer assumes no liability for use in legal decision-making contexts.

What it is

  • An MCP-native domain server (streamable HTTP transport, default :8001/mcp) that implements all four MCP capability classes for German federal + state laws and EU acts:
    • Tools — 10 callable tools (9 v1 law tools + research_topic multi-step smart tool with Sampling).
    • Resources — 10 read-only legal:// URIs (paginated law index, full law text, single norm, relationships, corpus coverage/limitations/manifest).
    • Prompts — 5 curated slash-workflows (/rechtsfrage, /zitation-checken, /norm-erklaeren, /recherche, /dsgvo-check).
    • Sampling — safe_sample helper for server-orchestrated LLM calls with retry + schema validation, used by research_topic.
  • A FastAPI HTTP API over the same runtime, for non-MCP clients.
  • Local or server-side infrastructure: no SaaS account required. Self-host via uvx / Docker, or use the optional public-hosted endpoint at mcp.klein.business/legal/de.

What it is not

  • A legal-advice engine. No interpretation, no AI legal reasoning.
  • A tenant-specific SaaS or legal-advice service. The optional public endpoint is stateless; you can also run it locally or on your own infrastructure.
  • A bundler of editorial law text. Texts come from official sources (gesetze-im-internet.de, EUR-Lex / Cellar) at runtime.

Quickstart

uvx legal-text-mcp-de

See Quickstart → uvx for the full setup, Claude Desktop, or Docker.

Architecture at a glance

flowchart LR
  Client[MCP client] -->|streamable HTTP :8001/mcp| Server
  Client2[HTTP client] -->|FastAPI :8080| Server
  Server[legal-text-mcp-de] -->|loads| Dataset
  Dataset[(DATASET_PATH)] -->|fixture or generated| Sources
  Sources[gesetze-im-internet.de
EUR-Lex / Cellar]

The server runs against either committed fixture packages (deterministic CI tests) or a generated production corpus (DATASET_PATH=...).

Where to next