DATEV EXTF MCP Server

MCP server that validates and writes DATEV-Format (EXTF) files: Buchungsstapel (booking batches) and Debitoren/Kreditoren (customer and supplier master data). Ask your AI assistant why DATEV…

Local serverstdioMIT

What is the DATEV EXTF MCP Server?

datev-extf-mcp is an MCP project maintained in the seamless-engineering/datev-extf-mcp repository. The maintainer describes its purpose as “MCP server that validates and writes DATEV-Format (EXTF) files: Buchungsstapel (booking batches) and Debitoren/Kreditoren (customer and supplier master data). Ask your AI assistant why DATEV…”. Read the project documentation for the complete scope.

Installation

The documented npm package is @seamless-engineering/datev-extf-mcp. The configuration below comes from the maintainer’s example; adapt its paths and account values to your environment.

Source

Project documentation · Repository · Discovery listing. This profile records the public documentation checked on 2026-10-08.

Recorded tools

Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.

Tool	What it does
validate_datev_extf	Checks a file (path) or pasted text (content). Returns header data, error and warning counts, and each finding with line, field, value and an explanation in…
explain_datev_finding	Explains a finding code such as amount-dot or bu-automatic.
write_buchungsstapel	Builds a Buchungsstapel (Formatversion 13) from a header and booking rows (amounts in cents), validates it, and writes it as Windows-1252 to outputPath or…
list_datev_columns	Lists the 125 Buchungsstapel or 254 Debitoren/Kreditoren columns by position.

How to install the DATEV EXTF MCP Server

{
  "mcpServers": {
    "datev-extf": {
      "command": "npx",
      "args": [
        "-y",
        "@seamless-engineering/datev-extf-mcp"
      ]
    }
  }
}

From the project documentation. Replace placeholders and example paths before connecting.