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

de.fakturaiPublished by fakturai.deOfficial publisherv1.0.1Updated Oct 24, 2026

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

VerifiedStreamable HTTPWeb executableFinanceBusiness & Commerce

Overview

AI-generated overview

Generates and validates German e-invoices (ZUGFeRD, Factur-X, XRechnung, EN 16931) through a hosted endpoint, returning PDFs with KoSIT validation reports.

What you can do
  • Generate a KoSIT-verified ZUGFeRD/Factur-X e-invoice and get back a base64 PDF, invoice number and full validation report
  • Validate an existing invoice from a base64 PDF or raw CII XML against PDF/A, EN 16931 Schematron and the official KoSIT acceptance gate
  • Check engine health, including KoSIT and Mustang daemon status and dependency version pins against latest releases
When to use it
Useful when an assistant has to produce compliant German e-invoices for B2G or B2B billing, or check whether an existing ZUGFeRD/Factur-X/XRechnung file passes official validation before sending it.
Requirements
A remote streamable HTTP endpoint at fakturai.de; no package, environment variables or headers are declared. The tools are described as requiring no authentication. Network access to the provider is needed.
Before you install
Invoice contents, including customer and payment data, are sent to a third-party service for generation and validation. Generated invoices are returned as base64 PDFs that must be stored and delivered by you. Confirm the provider's data handling and retention terms before sending real billing data.

Installation

In SourceWeft

  1. Open Fakturai — German E-Invoice (ZUGFeRD / Factur-X / E-Rechnung) in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/de.fakturai%2Ferechnung/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "fakturai-german-e-invoice-zugferd-factur": {
      "type": "http",
      "url": "https://fakturai.de/mcp"
    }
  }
}

Tools

3

generate_einvoice

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.

Parametersinvoice_jsonrequiredseller_profilerequired

validate_einvoice

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.

Parameterscontentrequiredcontent_format

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.

Takes no parameters.

Version history

1
  1. v1.0.1LatestSep 16, 2026

Score

83% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.