tangency-labs/solidcraft

SolidCraft is a parametric 3D CAD application built in pure Rust that runs on desktop, in the browser, and through an MCP server for AI agent automation.

The tool addresses the need for an open-source CAD system with parametric modeling capabilities. It works by letting users sketch, apply constraints, and build solids through a feature timeline where changes to dimensions automatically trigger model rebuilds. The application supports standard CAD workflows including extrusion, filleting, shelling, patterning, and text engraving, while also tracking properties like mass and material definitions.

SolidCraft suits developers and makers who want a scriptable, open CAD tool without vendor lock-in. It works well for projects ranging from mechanical enclosures to custom parts, especially where parametric design saves iteration time. The browser-based version makes it accessible without installation, while the desktop application provides a full-featured environment. The built-in MCP server integration enables AI agents to generate models programmatically, opening possibilities for generative design workflows. The tool handles STEP file formats for interoperability with other CAD systems.

The project maintains active continuous integration on its main branch. Development activity shows regular engagement with the community through a Discord channel. The codebase is organized around a separate SolidCore library, indicating a deliberate architectural separation between the modeling engine and the user interface layer.