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The GroupDocs.Conversion MCP server runs in evaluation mode out of the box — no sign-up, no key. Your existing GroupDocs.Conversion (or GroupDocs.Total) license unlocks full functionality: point the installer’s licensePath — or the GROUPDOCS_LICENSE_PATH environment variable in a manual install — at your .lic file.

The MCP server itself is open source (MIT); the underlying GroupDocs.Conversion engine requires a license for production use.

Without a license:

• Converted output carries an evaluation watermark, and tool responses include an evaluation-mode notice.
• A single server process can open at most 15 documents; further calls fail with “Could not open more than 15 document files in evaluation mode” until the server restarts (your AI client restarts it automatically on the next session).

An empty license path is always safe — the server logs a notice and continues in evaluation mode; it never errors because a license is absent.

Installer config:

{ "licensePath": "D:/Storage/Licenses/GroupDocs.Total.lic" }

Manual (NuGet channel) — set the environment variable in your client’s server entry:

"env": { "GROUPDOCS_LICENSE_PATH": "/path/to/GroupDocs.Total.lic" }

Docker channel — mount the license folder read-only:

docker run --rm -i -v /path/to/documents:/data \
  -v /path/to/license-folder:/license:ro \
  -e GROUPDOCS_LICENSE_PATH=/license/GroupDocs.Total.lic \
  ghcr.io/groupdocs-conversion/conversion-net-mcp:latest

Your license file is read from local disk by the local server process — like your documents, it never leaves your machine.

• Free 30-day temporary license — full functionality for evaluation.
• Purchase GroupDocs.Conversion · Product page
• General policies: Purchase Policies and FAQ