vcad

Open-source parametric CAD for the AI era.

Try it now →

Features

• Modeling — Primitives, booleans, fillets, chamfers, shell
• Sketching — 2D constraints, extrude, revolve, sweep, loft
• Assembly — Parts, instances, joints, forward kinematics
• Simulation — Physics with Rapier3D, gym-style RL interface
• Import/Export — STEP import, STL/GLB/STEP/DXF export
• Rendering — Direct BRep ray tracing + tessellated mode
• Cloud — Supabase sync with Google/GitHub auth

Use vcad

Web App

Visit vcad.io — no install required.

CLI

cargo install vcad-cli
vcad export input.vcad output.stl
vcad import-step input.step output.vcad

MCP Server (AI Agents)

The MCP server lets AI agents create and manipulate CAD models:

npm install -g @vcad/mcp

Tools: create_cad_document, export_cad, inspect_cad, gym_step, gym_reset

Rust Library

use vcad_kernel::Solid;

// Create a box with a hole
let solid = Solid::cube(100.0, 60.0, 20.0);
let hole = Solid::cylinder(10.0, 25.0, 32);
let result = solid - hole;

// Export to mesh
let mesh = result.to_mesh(32);

See crates/vcad-kernel for the full API.

Architecture

vcad/
├── crates/           # Rust BRep kernel (~35K LOC)
│   ├── vcad-kernel/  # Unified API
│   ├── vcad-kernel-topo/    # Half-edge topology
│   ├── vcad-kernel-booleans/# Boolean operations
│   └── ...           # 20+ modular crates
├── packages/         # TypeScript
│   ├── app/          # React + Three.js web app
│   ├── mcp/          # MCP server for AI agents
│   └── ...
└── supabase/         # Database migrations

Development

# Rust
cargo test --workspace
cargo clippy --workspace -- -D warnings

# TypeScript
npm ci
npm run dev -w @vcad/app   # Run web app locally

License

MIT