Document tools for Claude, ChatGPT and any MCP client. Say "turn this into a PDF" and it happens — to a real file on your own disk, without opening a browser.

claude mcp add diemdesk -- npx -y diemdesk-mcp

Or, for Claude Desktop, in claude_desktop_config.json:

{
  "mcpServers": {
    "diemdesk": {
      "command": "npx",
      "args": ["-y", "diemdesk-mcp"]
    }
  }
}

Restart the app completely — Claude Desktop reads that file once, at startup.

The nine tools

Tool	What it does
`office_to_pdf`	Word, Excel, PowerPoint, OpenDocument, RTF, CSV or HTML → PDF
`pdf_to_word`	PDF → editable `.docx`
`pdf_to_powerpoint`	PDF → editable `.pptx`
`pdf_to_rtf`	PDF → rich text
`pdf_to_odt`	PDF → OpenDocument text
`pdf_to_pdfa`	PDF → PDF/A, the archival format
`ocr_pdf`	Scanned PDF → searchable, plus the recognised text
`webpage_to_pdf`	A live URL → PDF
`list_local_tools`	Asks what is deliberately not here, and why

Why nine and not a hundred

DiemDesk has well over a hundred tools, and most of them run in your browser — merging, splitting, compressing, redacting, signing. Those never touch a server, which is the entire point of them, so there is nothing for an MCP server to call. Exposing them here would mean uploading your files to run work that already runs locally, and privately, on your own machine.

What is left is the set that genuinely needs a server: LibreOffice for the Office conversions, Ghostscript for PDF/A, Tesseract for OCR, headless Chrome for web capture. That is these nine. list_local_tools will tell your assistant about the rest so it can point you at the right page instead of guessing.

Privacy

Files are sent to DiemDesk's server, converted, and deleted immediately — nothing is stored, and nothing is used for training. If that is not acceptable for a given document, use the on-device tools at diemdesk.com instead; they never leave your machine.

Pro

Free accounts get a daily allowance on the server-side conversions. To lift it, put your token in the config:

{
  "mcpServers": {
    "diemdesk": {
      "command": "npx",
      "args": ["-y", "diemdesk-mcp"],
      "env": { "DIEMDESK_TOKEN": "paste-your-token-here" }
    }
  }
}