SolidCraft is Parametric, Automation-friendly CAD for Desktop and Browser

Tangency Labs' open-source SolidCraft CAD suite, written entirely in Rust, runs as both a desktop app and a browser web app and exposes every user action as a JSON-parameterized command, alongside a built-in headless command line interface and an MCP (Model Context Protocol) server built to let AI agents drive the program. SolidCraft is still in early development but supports sketches, solid modeling, constraints and a full parametric feature timeline, in which a model is the sum of a sequence of operations so that changing a value such as wall thickness automatically rebuilds dependent features. A development roadmap and a live online demo are available.

If you’re looking to try a new, open source 3D modeling CAD suite, especially one with automation-friendly interfaces, take a look at SolidCraft https://github.com/tangency-labs/solidcraft . It’s under development but there’s support for all the usual features like sketches, solid modeling, and constraints as well as a full parametric feature timeline. A parametric timeline essentially means the model exists not as a single discrete object, but as the sum of a sequence of operations. One advantage of this is being able to set things up so that if one changes a value like wall thickness , all the features that depend on that change automatically get rebuilt as a result. But there’s more Written entirely in Rust, SolidCraft can run as a desktop app or as a web app in a browser. Everything the user can do in SolidCraft is a command with JSON parameters, and it offers a built-in headless command line interface and even an MCP Model Context Protocol server built specifically to give AI agents a way to use the program, should one be interested in experimenting with that sort of thing. SolidCraft is still in early development, but so far quite a few features seem to work as they should. Check out the development roadmap https://github.com/tangency-labs/solidcraft/blob/main/ROADMAP.md for details, and there’s a live online demo if you’re in the mood to click around and get a feel for things. We have seen quite a few open-source, browser-based CAD efforts https://hackaday.com/blog/?s=browser+cad over the years and it’s encouraging to see developers continuing to explore fresh ideas and features in the CAD landscape.