dwg-mcp

dwg-mcp is a local MCP gateway for Autodesk AutoCAD 2022 to 2027 DWG workflows. It has two parts: a .NET 8 MCP server launched by Claude Code, Cursor, OpenCode or another stdio MCP client, and version-specific AutoCAD add-in shells loaded inside AutoCAD that execute commands against the drawing database. The agent talks MCP, the server talks to the plugin over a local wire, TCP NDJSON for AutoCAD 2022 to 2024 and a named pipe for 2025 to 2027, and the plugin talks to the AutoCAD .NET API. Everything stays on the user's machine.

The motivating workflow is drawing translation: construction and engineering drawings carry dense technical text, and when those drawings arrive in a foreign language the text must be translated before the project team can act. The server handles spatial clustering of fragmented text into logical sentences, automatic creation of a Unicode-capable text style, height scaling for Latin versus CJK text density, MText conversion where safe, and a single undo wrapping each operation. The README reports usage evidence of 220 completed tool calls over 19 days of active use on production construction drawings, at a 98.2 percent success rate.

The README badges 45 default MCP tools plus optional ones. Installation is from a client setup ZIP on GitHub Releases, which includes a self-contained MCP server and release-specific AutoCAD plugins; the README notes that source shells cover 2022 to 2027 while packaged plugins and tested host years depend on the release.