agentcad
A CAD design tool for coding agents (free + open source)
About agentcad
agentcad is an innovative open-source CAD design tool tailored for coding agents, combining AI and 3D modeling to streamline the creation of manufacturable parts. It allows users to give prompts, sketches, or images to AI agents like Claude or Codex, which then generate precise build123d or CadQuery scripts. The platform goes a step further by automatically checking the generated geometry for errors, ensuring watertight and dimensionally accurate models. Its interactive viewer, along with exported STEP, STL, and GLB files, enables users to inspect, modify, or prepare parts for 3D printing or manufacturing. What sets agentcad apart is its integration of AI-driven code generation with rigorous self-validation, reducing errors and saving time in the design process. This tool is ideal for developers, hobbyists, or engineers seeking an open-source solution that combines AI capabilities with robust 3D modeling features.
Screenshots




Pros
- ✓Open-source, free to use and modify
- ✓Automated error checking and validation of geometry
- ✓Supports multiple export formats for versatile use
- ✓Integrates AI prompts for intuitive design generation
- ✓Interactive 3D viewer for inspection and editing
Cons
- ✗Requires familiarity with scripting and CAD concepts
- ✗AI-generated designs may need manual refinement
- ✗Limited user interface complexity compared to commercial CAD tools
Use Cases
Pricing
agentcad is free and open source, making it accessible for individual users, educational institutions, and developers interested in customizing or extending its capabilities.
Quick Info
Topics
Makers
James Dillard
@jamesdillardAlternatives
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