inventor-mcp (NeonGlay)
MCP server for parametric 3D modeling in Autodesk Inventor, driving Inventor with AI in natural language and shipping agent skills plus documented Inventor 2026 COM API knowledge.
What it does and how it connects
inventor-mcp is an MCP server for parametric 3D modeling in Autodesk Inventor that lets an AI assistant build real parametric parts, flanges, shafts, nuts, brackets, and sheet metal enclosures, by talking in natural language. The server wraps Inventor COM API with high level, millimeter based tools and ships with documented knowledge of Inventor 2026 API quirks.
The README lists 34 MCP tools covering sketching, extrude and revolve, native hole features (drilled, tapped, counterbore), fillets, chamfers, circular patterns, sheet metal with face, flange, and cut plus flat pattern support, and parameters. An execute_python power tool runs arbitrary Python against the live COM connection with a persistent namespace, and every feature operation returns a volume and topology delta so the AI can self verify each step. Transactions wrap multi step builds with one call rollback.
Requirements are Windows with Autodesk Inventor, developed and tested on Inventor 2026, and Python 3.12 or later with mcp[cli] and pywin32. The skills directory ships two agent skills, inventor-modeling and inventor-din-parts, with parametric recipes for DIN and ISO standard parts.
What engineers report
A fresh pip install mcp[cli] today pulls mcp 2.x, which renamed FastMCP to MCPServer. Result: immediate crash on startup.
2026-09-09Read the original
Alternatives
Compare side by side- fusion-cad-mcp
A typed MCP tool surface over Autodesk Fusion, rather than an MCP server over Inventor COM API.
- onshape-mcp (hedless)
An MCP server with 45 tools for programmatic CAD modeling in Onshape over the REST API, rather than an MCP server over Inventor.
- AnkusDrive
A CLI and MCP server that drives FreeCAD with FEM and CFD simulation, rather than an MCP server for Inventor.
- MecAgent
A commercial desktop copilot that acts inside an open SolidWorks session, rather than an open source MCP server for Inventor.
- build123d-mcp (pzfreo)
A CAD toolbox an AI app uses through MCP to build build123d models, rather than an MCP server for Inventor.
Recurring errors it addresses
Error Index entries this tool is built to reduce or work around.
Sources
Not verified
- Pricing: none stated on the repo.
- No GitHub releases exist, so latest release fields are null.
- Activity: last push June 2026, so the project looks quiet.
Last verified November 6, 2026. Listings are informational. The evidence score measures public, verifiable evidence and is not an endorsement or a compatibility claim.