Fakturai — German E-Invoice (ZUGFeRD / Factur-X / E-Rechnung)

KoSIT-verified German e-invoices: generate & validate ZUGFeRD, Factur-X, XRechnung, EN 16931.

Should I use this

Quality & Safety

A
Description quality
100%
Schema completeness
63%
Naming quality
93%
Poisoning risk
100%
Permission match
100%
Protocol compliance
100%

Based on automated analysis of tool definitions and protocol compliance.

Context Cost

~461Tokens (tool definitions)
~823 BTypical response size
Minimal attention impact (0.36% of 128k context)

This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.

Install

One-Click Install

Add this to your `claude_desktop_config.json` file:

{
  "mcpServers": {
    "erechnung": {
      "url": "https://fakturai.de/mcp"
    }
  }
}

Remote endpoints

https://fakturai.de/mcpstreamable-http

What it can do

Tool inventory

Tools (3)

🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
⚪generate_einvoice(seller_profile, invoice_json)

Generate a KoSIT-verified ZUGFeRD/Factur-X German e-invoice (EN 16931 / E-Rechnung). Returns pdf_b64 (base64 PDF), invoice_number, and the full validation_report. Every invoice returned has passed the official German government KoSIT acceptance gate — the same gate used by federal agencies for B2G submissions. Keywords: ZUGFeRD, Factur-X, E-Rechnung erstellen, Rechnung PDF, German invoice.

Input Schema

{
  "type": "object",
  "properties": {
    "seller_profile": {
      "additionalProperties": true,
      "title": "Seller Profile",
      "type": "object"
    },
    "invoice_json": {
      "additionalProperties": true,
      "title": "Invoice Json",
      "type": "object"
    }
  },
  "required": [
    "seller_profile",
    "invoice_json"
  ],
  "title": "generate_einvoiceArguments"
}

Output Schema

{
  "type": "object",
  "additionalProperties": true,
  "title": "generate_einvoiceDictOutput"
}
⚪validate_einvoice(content, content_format)

Validate an existing ZUGFeRD/Factur-X/E-Rechnung invoice. Accepts a base64-encoded PDF or raw CII XML. Runs the full three-validator check: PDF/A conformance, EN 16931 Schematron, and the official German KoSIT acceptance gate. No authentication required. Keywords: E-Rechnung prüfen, ZUGFeRD validieren, Factur-X check, Rechnung compliance.

Input Schema

{
  "type": "object",
  "properties": {
    "content": {
      "title": "Content",
      "type": "string"
    },
    "content_format": {
      "default": "pdf_b64",
      "title": "Content Format",
      "type": "string"
    }
  },
  "required": [
    "content"
  ],
  "title": "validate_einvoiceArguments"
}

Output Schema

{
  "type": "object",
  "additionalProperties": true,
  "title": "validate_einvoiceDictOutput"
}
🟢compliance_status

Check the e-rechnung engine health: KoSIT + Mustang daemon status and dependency version pins vs. latest releases. Use before bulk invoice generation to confirm the compliance gate is fully operational.

Input Schema

{
  "type": "object",
  "properties": {},
  "title": "compliance_statusArguments"
}

Output Schema

{
  "type": "object",
  "additionalProperties": true,
  "title": "compliance_statusDictOutput"
}

Community

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Evidence

Recent observations

verifiedversion not recorded3 tools
verifiedversion not recorded3 tools