Allows validation, rendering, and exporting of OpenSCAD models.
Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type @ followed by the MCP server name and your instructions, e.g., "@loom render a preview of my design.scad"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
An MCP server that lets an agent (e.g. Claude Code) validate, render, and export OpenSCAD models it's editing directly as files, so it can visually verify what it built.
Reading, writing, and listing .scad files is left to the agent's normal file tools (Read,
Write, Edit, Glob) — this server only wraps the parts Claude Code can't do on its own: invoking
the openscad binary and handling its image/binary output.
Node.js 18+
openscad on your PATH (or set OPENSCAD_BIN to its full path)
Related MCP server: OpenSCAD MCP Server
npm installnpm startclaude mcp add loom -- node /absolute/path/to/loom/src/index.jsopenscad-version — confirm the OpenSCAD CLI is available.
validate-model — compile a .scad file without producing a visual export, to catch
syntax/geometry errors. Fast sanity check before rendering.
render-preview — render a .scad file to PNG and return it inline for visual inspection.
Supports image size, camera, projection, color scheme, render mode (full vs. throwntogether),
and view overlays (axes/edges/etc). Defaults to saving next to the source file.
export-model — export a .scad file to STL/OFF/3MF/AMF/DXF/SVG/CSG/POV. Defaults to saving
next to the source file.
All three model tools take a path to the .scad file (any location — no fixed workspace
directory) and an optional output path to override where the rendered/exported file is saved.
OPENSCAD_BIN — path to the openscad executable (default: openscad).
This server cannot be deployed
Parametric 3D CAD for AI agents: build print-ready parts, check them, export STL, 3MF or STEP.
Agent-first CAD: editable .kcad.ts source, deterministic review, OpenCASCADE kernel.
Cloud Blender for AI agents: scenes, assets, renders, MP4, STL, GLB — over hosted remote MCP.
OCR, transcription, file extraction, and image generation for AI agents via MCP.
