mcp-servers-for-revit-integration

Install the Revit plugin into the Revit Addins folder, then register the server in claude_desktop_config.json with command cmd and args /c npx -y mcp-server-for-revit. Start Revit, load the plugin, and enable commands in the ribbon Settings dialog.

Use create_line_based_element with a family type ID, start and end points, and level ID for walls, and create_room with a level ID, location, name, and number for rooms. Get valid family type IDs first with get_available_family_types.

The system supports Revit 2020 through 2026. Revit 2020-2024 builds target .NET Framework 4.8, while Revit 2025-2026 builds target .NET 8, with matching Visual Studio build configurations per version.

Check that the .addin manifest exists in %AppData%\Autodesk\Revit\Addins\<version> and that its DLL paths match actual file locations. Verify the build configuration matches your Revit version and enable the plugin in the ribbon Settings.

Yes, create a C# class inheriting from RevitMCPCommandSet.BaseCommand, implement Execute with a Revit Transaction, and register it in command.json with its parameters. Build the command set and copy the DLL into the plugin's Commands folder.

Confirm the plugin is loaded by checking the ribbon tab is visible, and verify the default WebSocket port 8081 is not blocked by a firewall. Restart Revit after any configuration changes.