Parametric design with JavaScript
Build reusable parts, configurable dimensions, and generated geometry with JSCAD.
Programmable CAD for VS Code
Design CAD models with code.
Write JSCAD in VS Code, preview the result in real time, and export manufacturing-ready files from one workflow.
See the code, the parameters, and the live 3D preview together.
What You Can Do Today
Everything you need to go from idea to export
HootCAD keeps coding, visualization, and manufacturing output in one tight loop.
Live 3D preview
Inspect the model as you code so mistakes surface early instead of after export.
Production-ready exports
Ship STL, OBJ, DXF, SVG, AMF, and more without bouncing between tools.
Agent-friendly workflows
Use AI coding agents safely through MCP when you want help with geometry and math.
Write your model
Create or update a .jscad file in VS Code.
Open the preview
Launch HootCAD to render your geometry beside the code.
Inspect the result
Rotate, zoom, and validate the shape before you commit to export.
Export and ship
Generate the format you need for fabrication, sharing, or downstream tooling.
Built for Modern Development Workflows
Fits the way engineering teams already work
HootCAD treats CAD like source code, so it slides into the tooling and habits your team already trusts.
- Text-based design files
- Meaningful Git diffs
- Code review friendly
- Built for VS Code
- Open source (MIT licensed)
Why that matters
Reviewable changes
See geometry edits in pull requests instead of passing opaque binary files around.
Reusable building blocks
Turn dimensions, constraints, and repeated features into maintainable code.
One familiar editor
Keep the CAD workflow inside VS Code instead of fragmenting your toolchain.