Einvoice MCP Server

XRechnung & ZUGFeRD: create, validate, and convert German e-invoices. EN 16931 compliant.

Local serverstdioTypeScript

What is the Einvoice MCP server?

If you already use Einvoice, the einvoice mcp server is the piece that lets your assistant work with it directly. XRechnung & ZUGFeRD: create, validate, and convert German e-invoices. EN 16931 compliant.

What the server does

E-Invoice MCP ist ein Model Context Protocol Server fuer die Erstellung und Validierung von E-Rechnungen nach dem deutschen XRechnung-Standard. Ab 2027 muessen alle Unternehmen in Deutschland E-Rechnungen versenden koennen — mit diesem Tool bist du vorbereitet.

  • XRechnung erstellen — — Valides UBL 2.1 XML aus strukturierten Daten (EN 16931 + XRechnung 3.0.2)
  • E-Rechnung validieren — — Syntax, Pflichtfelder und deutsche Business-Regeln (BR-DE) pruefen
  • Daten extrahieren — — Strukturierte Daten aus UBL- oder CII-XML lesen
  • Format-Info — — Nachschlagewerk fuer Pflichtfelder, Steuer-Kategorien, Einheiten-Codes und Fristen
  • Automatische Berechnung — — Netto, Brutto, Steuerbetraege werden automatisch berechnet
  • Plugin-faehig — — Kann standalone laufen ODER in den BuchPilot MCP Server integriert werden

Available tools

The toolset is worth reading before you wire it up, because it tells you what the integration is really for:

  • Voraussetzungen — The Voraussetzungen tool exposed by this server
  • Quickstart — Eine Schritt-fuer-Schritt-Anleitung "Erstelle deine erste XRechnung in 5 Minuten" findest du in docs/quickstart.md
  • Kurzuebersicht — The Kurzuebersicht tool exposed by this server

Installation

Installation goes through your MCP client rather than a global install: point it at einvoice-mcp on npm and it is fetched when the client starts. The copy-paste blocks for Claude Desktop, Claude Code and Cursor are further down this page.

Where it fits

Among the developer tooling options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Einvoice's toolset — Voraussetzungen, Quickstart, Kurzuebersicht — is a fair guide to whether it matches your workflow. It is maintained by makririch; worth a glance at recent repository activity before you build anything load-bearing on it.

SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.

Worth knowing first

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

Available tools

ToolWhat it does
VoraussetzungenThe Voraussetzungen tool exposed by this server.
QuickstartEine Schritt-fuer-Schritt-Anleitung "Erstelle deine erste XRechnung in 5 Minuten" findest du in [docs/quickstart.md](docs/quickstart.md).
KurzuebersichtThe Kurzuebersicht tool exposed by this server.

How to install the Einvoice MCP server

{
  "mcpServers": {
    "einvoice": {
      "command": "npx",
      "args": ["-y", "einvoice-mcp"]
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Example prompts to try

  • Use Einvoice to Voraussetzungen.
  • Use Einvoice to Quickstart.
  • Use Einvoice to Kurzuebersicht.

Frequently asked questions

It connects Einvoice to MCP-compatible AI assistants such as Claude and Cursor, exposing 3 tools (Voraussetzungen, Quickstart, Kurzuebersicht) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Einvoice directly.