SolveCraft

SolveCraft is an open-source parametric 3D CAD application built in pure Rust for modelling solids.

SolveCraft is an open-source parametric 3D CAD application written in pure Rust. It operates like Fusion-style modellers, allowing users to sketch on a plane, constrain and dimension sketches, turn profiles into solids using a feature timeline, and update parameters to rebuild the model. The application runs as a desktop app, a web app, a headless CLI, and an MCP server for AI agents. Every action is a command with JSON parameters, enabling complete scripting and testing parity across the interface, CLI, and control channels. The current version supports sketching, solid modelling, parameters, components with joints, sheet metal, and a plastic-enclosure subset, while surfaces, drawings, CAM, and simulation are deferred. It is licensed under MIT or Apache-2.0 as a clean-room implementation.

SolveCraft at a glance

Best for: Software engineer, Designer
Runs on: Web, Windows, Linux, CLI, self-hosted, open source
Pricing: Free and open source under MIT OR Apache-2.0.
Released: October 2026
Category: AI productivity tool
Website: bherbruck.github.io

Key features

Sketch on a plane with constraints and dimensions
Turn profiles into solids with timeline features
Run as a desktop application for Windows and Linux
Run as a browser-based web application
Execute commands via a headless CLI
Model using an MCP server for AI agents
Use JSON parameters for every command

Use it for

Create parametric 3D CAD models and assemblies
Script and automate modelling tasks
Use AI agents to drive 3D models via an MCP server

Alternatives to SolveCraft

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Kiln — Combines a user-friendly desktop app with an open-source Python library.
Amagine3D — Generates editable CAD source code directly from natural language and images.
thClaws — Runs locally in native Rust with zero cloud lock-in and multi-provider support.
Claudian — Turns an Obsidian vault into a functional directory for AI agents.

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