diemdesk-mcp

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" }
    }
  }
}

Requirements

Node 18 or newer. No other dependencies — the server is a single file.

Full setup guide, troubleshooting and worked examples: https://diemdesk.com/mcp-server

MIT licensed.