ZUGFeRD Validator MCP server

ZUGFeRD Validator is a remote MCP server that gives an AI agent 5 tools, among them check_consistency, create_invoice, extract_xml. It answers at https://api.zugferd-validator.de/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 10 September 2026; the last check, on 19 October 2026, succeeded.

Status

Answering

Tools

Official

yes, served from zugferd-validator.de

Reliability

6 of 6 checks

Response time

41 ms

Transport

streamable HTTP

Last checked

19 October 2026

Validiert E-Rechnungen (ZUGFeRD/Factur-X, XRechnung) gegen EN 16931 mit Korrekturvorschlägen.

Description as the publisher wrote it.

The 5 tools ZUGFeRD Validator offers

Tool	What it does
`check_consistency`	Prüft ob die sichtbaren PDF-Daten mit den eingebetteten XML-Daten übereinstimmen. Inputs: pdf_content
`create_invoice`	Erstellt aus strukturierten Daten eine valide E-Rechnung — entweder als ZUGFeRD-PDF (PDF/A-3 mit eingebettetem XML) oder als reines XRechnung-XML (mit Leitweg-ID für B2G). Unterstützt mehrere Positionen, alle USt-Kategorien, Rabatte/Zuschlä Inputs: format, document_type, type_code, preceding_invoice, number, date
`extract_xml`	Extrahiert die eingebettete XML-Datei aus einem ZUGFeRD/Factur-X PDF. Inputs: pdf_content
`validate_invoice`	Validiert eine E-Rechnung (ZUGFeRD/Factur-X PDF oder XRechnung XML) gegen EN 16931 und gibt strukturierte Ergebnisse mit Korrekturvorschlägen zurück. Inputs: file_content, file_type, profile
`validation_report`	Erzeugt aus einer E-Rechnung einen Validierungsbericht als PDF (PDF/A-3b) zum Ablegen und Weitergeben. Der Bericht nennt Ergebnis, alle Meldungen mit Regel-ID und Feld, den Prüfzeitpunkt, Format und Profil, die SHA-256-Prüfsumme der geprüft Inputs: file_content, file_type, attach_source, lang, file_name

Add ZUGFeRD Validator to your AI client

Every block below points at https://api.zugferd-validator.de/mcp. Pick your client and copy.

Claude Code: one command in your terminal

claude mcp add --transport http zugferd-validator https://api.zugferd-validator.de/mcp

Claude Desktop: claude_desktop_config.json

{
  "mcpServers": {
    "zugferd-validator": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://api.zugferd-validator.de/mcp"]
    }
  }
}

Cursor: ~/.cursor/mcp.json, or .cursor/mcp.json in a project

{
  "mcpServers": {
    "zugferd-validator": {
      "url": "https://api.zugferd-validator.de/mcp"
    }
  }
}

VS Code and GitHub Copilot: .vscode/mcp.json

{
  "servers": {
    "zugferd-validator": {
      "type": "http",
      "url": "https://api.zugferd-validator.de/mcp"
    }
  }
}

Zed: Zed settings.json

{
  "context_servers": {
    "zugferd-validator": {
      "url": "https://api.zugferd-validator.de/mcp"
    }
  }
}

Windsurf: ~/.codeium/mcp_config.json

{
  "mcpServers": {
    "zugferd-validator": {
      "serverUrl": "https://api.zugferd-validator.de/mcp"
    }
  }
}

JetBrains AI Assistant: Settings, Tools, AI Assistant, MCP, New MCP Server, as JSON

{
  "mcpServers": {
    "zugferd-validator": {
      "url": "https://api.zugferd-validator.de/mcp"
    }
  }
}

Continue: .continue/mcpServers/neuronto.yaml

name: ZUGFeRD Validator
version: 0.0.1
schema: v1
mcpServers:
  - name: ZUGFeRD Validator
    type: streamable-http
    url: https://api.zugferd-validator.de/mcp

Gemini CLI: ~/.gemini/settings.json

{
  "mcpServers": {
    "zugferd-validator": {
      "httpUrl": "https://api.zugferd-validator.de/mcp"
    }
  }
}

Codex CLI: MCP server config

{
  "mcpServers": {
    "zugferd-validator": {
      "type": "http",
      "url": "https://api.zugferd-validator.de/mcp"
    }
  }
}

Warp: MCP servers, + Add, paste JSON

{
  "mcpServers": {
    "zugferd-validator": {
      "url": "https://api.zugferd-validator.de/mcp"
    }
  }
}

Goose: a one-click extension link

goose://extension?url=https%3A%2F%2Fapi.zugferd-validator.de%2Fmcp&type=streamable_http&id=zugferd-validator&name=ZUGFeRD%20Validator

Is ZUGFeRD Validator up right now?

It answered our last check on 19 October 2026 in 41 ms. Over 6 checks since 10 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.

MCP servers similar to ZUGFeRD Validator

Fakturai — German E-Invoice (ZUGFeRD / Factur-X / E-Rechnung)3 tools Rechnungslotse: deutsche E-Rechnung18 tools InvoiceXML0 tools InkVoice — XRechnung & E-Invoicing5 tools Einvoicewiz7 tools Attestwire9 tools

Questions about ZUGFeRD Validator

Is there an official ZUGFeRD Validator MCP server?

Yes. It is published by zugferd-validator.de and served from api.zugferd-validator.de, the vendor's own domain: https://api.zugferd-validator.de/mcp.

How many tools does ZUGFeRD Validator have?

5, as returned by the server's own tools/list on 11 September 2026: check_consistency, create_invoice, extract_xml, validate_invoice, validation_report.

Is ZUGFeRD Validator down?

It answered our last check on 19 October 2026 in 41 ms. Over 6 checks since 10 September 2026 it answered 6.

How do I add ZUGFeRD Validator to Cursor?

Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://api.zugferd-validator.de/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.

Does ZUGFeRD Validator need an API key?

It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.

Where this comes from

Publisher: de.zugferd-validator. Endpoint host: api.zugferd-validator.de. ARD identifier: urn:air:de.zugferd-validator:mcp:validator. First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page is inferred from its name. Ranking in Neuronto search is never for sale.

Is this your server? Get a message the day it stops answering or its tools change: monitoring, 14 days free. Or claim the domain to manage how it is listed.