manifold3d-mcp

Text-to-CAD and AI 3D modeling for 3D printing that yields editable parametric models.

MCP serverOpen sourceActiveMCAD Manufacturing

What it does and how it connects

Manifold 3D brings AI 3D modeling to GitHub Copilot and Claude Code for 3D printing projects. The assistant writes parametric TypeScript, validates the geometry, and opens an interactive preview, so a described part becomes an editable parametric model rather than a fixed mesh. Finished models export as 3MF for printing or GLB for sharing.

It installs as a Copilot plugin or a Claude Code plugin, with a native Canvas experience for Copilot that supports selection to chat, and an MCP plus browser Viewer experience for Copilot CLI or Claude Code. The README example is a parametric phone stand whose cable slot is widened from 14 mm to 22 mm in Canvas without changing the stand footprint. Node.js 24 or later is required.

Alternatives

Compare side by side

ia_3d_print_designer
A FreeCAD macro and MCP framework for printable parts with slicer export, rather than a TypeScript parametric modeler with a 3D preview.
Difference source
solidifai
A desktop build123d studio with a live viewport, rather than a Copilot and Claude Code plugin for Manifold3D modeling.
Difference source
harnesscad
A verifier-first harness that refuses infeasible CAD plans, rather than a modeling plugin that turns prompts into parametric parts.
Difference source
FreeCAD
The full FreeCAD application itself, while Manifold 3D is an AI modeling plugin for Copilot and Claude Code.
Difference source
text-to-cad
Generates CAD from text in its own workflow, while Manifold 3D works inside Copilot Canvas and Claude Code with a live preview.
Difference source

Recurring errors it addresses

Error Index entries this tool is built to reduce or work around.

SolidWorks to Fusion to STL on macOS produced non-manifold meshes (jaw_soft showed 91 non-manifold edges); OrcaSlicer's auto-repair fixed them, but the user worried the auto-repair changed the fit, and asked for STEP files.Error Index

Sources

Not verified

Pricing: none stated on the repo.
Real user voices: no real linked post read for this page; open issues are a maintainer pull request and a dependency update.
A named individual builder beyond the repository owner handle zhicwan

Last verified November 6, 2026. Listings are informational. The evidence score measures public, verifiable evidence and is not an endorsement or a compatibility claim.