Radar / AI media tools / SolidCraft

SolidCraft: open-source parametric CAD in Rust that agents can drive over MCP

SolidCraft is an open-source parametric 3D CAD application written in pure Rust (desktop, browser via WebAssembly, headless CLI) with constrained sketches, solid features, assemblies and an editable parameter timeline, plus an MCP server so an AI agent can run modeling commands, measure geometry, change parameters and export STEP/STL/OBJ files. Created Oct 7, it passed ~9,300 stars within weeks and is now one of GitHub's fastest-trending repos.

trendingmedia · 3dJEV traction 0.67tangency-labs/solidcraft · 9,951 ★added 2026-10-24

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Why it matters

A CAD tool designed from the start for agent control: the same command engine drives the desktop app, the browser build and the MCP server, so agents manipulate real parametric models instead of screen-scraping a GUI.

What you could build with it

An indie developer building hardware products could script SolidCraft's CLI to generate parametric part variants (brackets, enclosures, mounts) from a spec sheet, exporting STEP files for 3D printing or CNC without opening a CAD GUI for each variant.

Does it hold up?

Early but usable for simple parts per the project's own README, with drawings and CAM deferred; the v0.21 release-candidate pace and 9,300+ stars show real usage, but the rapidly changing save formats (format 34 by v0.21) mean files from newer builds may not open in older ones.

Built with SolidCraft

SolidCraft: Parametric CAD in Rust with MCP server, 1,730 stars in 6 dayssinapti.ca · Early coverage of the Oct 7 launch, the Show HN thread (130 points) and the v0.9.0 release within a week.
SolidCraft open-source CAD version 0.14.0 opens files from FreeCAD and Rhino3druck.com · Tracks the rapid release cadence to v0.14.0 with FreeCAD/Rhino import, gears, motion sequences and a built-in agent chat.
SolidCraft on daily.devdaily.dev · Reader summary of the desktop/web builds, STEP import/export, MCP agent connection and the in-progress SolidCore geometry kernel.

Learn more

technical deep dive →

First spotted on github: source.

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