fusion360-mcp-server
MCP server that connects AI coding agents to Autodesk Fusion 360 for CAD automation through an in-Fusion add-in bridge.
What it does and how it connects
Fusion360 MCP Server is an MCP server that connects AI coding agents to Autodesk Fusion 360 for CAD automation. It is two components: a Python MCP server that speaks MCP to the client and forwards commands over TCP on port 9876, and a Fusion360MCP add-in installed in Fusion that executes API calls on the main thread through custom events.
The README marks the project beta and says APIs and tool behavior may change between releases. It is tested with Claude Code and works with any MCP-compatible client, including OpenCode, Codex, and Cursor, and it is published on PyPI so clients can run it with uvx with no repo clone.
A cross-machine setup is documented for running the server and Fusion on different machines over LAN. The README is dated as last updated 2026-09-16.
What engineers report
Thanks for building this. It is the most capable Fusion MCP I have found and noticeably more complete than Autodesk's own.
2026-10-22Read the originalA fresh uvx fusion360-mcp-server --mode socket exits immediately with CONNECTION_CLOSED because the server crashes during main().
2026-10-20Read the original
Alternatives
Compare side by side- Fusion MCPilot
A portable agent skill for Fusion 360 over MCP with reusable workflows for parametric modeling, geometry validation, and 3D-print prep.
- solidworks-mcp (hjbaard)
An MCP server that lets AI agents build, measure, and verify parametric parts and assemblies in a live SolidWorks session over COM.
- onshape-mcp (gpambrozio)
An Onshape MCP server with 93 tools for sketching, solid features, assemblies, drawings, and export, with zero-config browser sign-in.
- freecad-ai
A FreeCAD workbench with a chat interface that builds and edits 3D models from natural language through 50 structured tools and 24 LLM providers.
- MecAgent
A commercial AI copilot that runs as a separate desktop app beside CAD and acts inside the open SolidWorks session.
Recurring errors it addresses
Error Index entries this tool is built to reduce or work around.
- Cloud-first file model makes local file control, rename/move/backup workflows feel alien and risky.Error Index
- General UI/UX is described as confusing and hostile for routine work.Error Index
- One failed fusion360 MCP call ate 23% of a Claude usage window, per the Haitch morning digest's smaller-items list.Error Index
- an agent-built parametric plywood panel passes 149 offline tests with green CI, but Fusion measurements and screenshots were NOT RUN, so live correctness is UNKNOWN before anything touches Fusion or a CNC.Error Index
Sources
Not verified
- No GitHub releases exist, so latest release fields are null.
- Pricing: none stated on the repo.
- A named individual builder beyond the Faust Machines organization
Last verified November 6, 2026. Listings are informational. The evidence score measures public, verifiable evidence and is not an endorsement or a compatibility claim.