EU EN-16931 & XRechnung Deterministic Validator

Overview

EU EN-16931 & XRechnung Deterministic Validator is an MCP server that validates XML invoices against the official KoSIT EN 16931 and XRechnung standards. It issues signed Ed25519 verifiable credentials and retains zero data, making it suitable for secure compliance workflows where invoice authenticity matters.

This is a remote-hosted server running at https://agent-gateway-i3gust564q-ey.a.run.app/mcp. No authentication is required, no local installation is needed, and v0.9.0 is the current release. You point your MCP client at the endpoint and begin validating immediately.

EU EN-16931 & XRechnung Deterministic Validator appears in the Development category on mcp.site and integrates with all MCP clients including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, and Zed. Maintainers from iotpay.eu can claim this listing to verify ownership and keep information up to date.

Installation

Settings → Connectors → Add custom connector
Name: EU EN-16931 & XRechnung Deterministic Validator
URL:  https://agent-gateway-i3gust564q-ey.a.run.app/mcp