Show HN: Hackerscad – Code-first CAD with MCP server for AI agents

Category: devtools

Tags: cad, parametric-modeling, ai-agents, mcp, opencascade, code-first

Score: 7.8/10 (Innovation: 8, Technical: 9, Documentation: 8, Utility: 6)

Hackerscad is a code-first parametric CAD tool where models are written in a small D-like scripting language, with mouse interaction that writes code back, and an MCP server enabling AI agents to create and manipulate 3D models. It combines OpenCascade B-rep solids, a custom language with sandboxing, bidirectional code/GUI editing, and AI-agent integration into a single desktop application. The project is technically ambitious and fills a gap for AI-assisted parametric CAD.

Target audience: mechanical engineers, makers, 3D printing enthusiasts, AI agent developers, CAD tooling developers

Repository: https://hackerscad.com/ · D · GPL-3.0 · 8 stars

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