InvoiceXML MCP

What it does

MCP server that lets an AI agent call the InvoiceXML API to work with Factur-X, ZUGFeRD, XRechnung, UBL, CII and Peppol BIS Billing 3.0 e-invoices. It is an ASP.NET Core 10 app: self-hosted with your own InvoiceXML API key, or hosted by InvoiceXML with OAuth. The code is MIT, but every call goes through the InvoiceXML service, so check that service's terms.

Where it fits on the map

Not on the map: needs a paid service.

The map places maintained projects for a company tax department or a tax authority, without a demo or paid-service flag. Everything else stays on the list with its label.

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Of the same kind, for a shared jurisdiction or tax area. Not a ranking.

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