Let an AI agent model 3D parts in an open-source CAD app over MCP
SolidCraft is an open-source parametric CAD app in pure Rust: sketch, constrain and build solids on a feature timeline. It runs on desktop or in the browser and ships a built-in MCP server so AI agents can do the modeling for you.
Source
bherbruck on Hacker News · 2026-10-13 · Project link
Written in our own words. Credit to the original author. Link checked 2026-10-17.
What they did
SolidCraft is an open-source parametric CAD app in pure Rust: sketch, constrain and build solids on a feature timeline. It runs on desktop or in the browser and ships a built-in MCP server so AI agents can do the modeling for you.
Result (as claimed)
Open source with Windows, Mac, Linux and browser builds; 142 points on Show HN.
Tools they used
Cost: Claude Code: free plan, paid from $17/mo. Checked 2026-10-14.
Set it up
Pick a contained repo or task
Start on a branch or side project where mistakes are cheap.
Install and configure
Set up Claude Code. Read what it can run on your machine and limit permissions where possible.
Run it on a real task
Give it a well-scoped issue and let it work. Review the diff like any pull request.
Add guardrails
Keep tests and CI in the loop, and never let an agent push to main or touch production secrets unattended.
Copy the full setup prompt
Paste into your agent and it will walk you through the setup, asking before anything that sends, posts or spends.
You are helping me set up this AI use case end to end in Claude Code. Goal: Let an AI agent model 3D parts in an open-source CAD app over MCP What the original author did: SolidCraft is an open-source parametric CAD app in pure Rust: sketch, constrain and build solids on a feature timeline. It runs on desktop or in the browser and ships a built-in MCP server so AI agents can do the modeling for you. Reported result (as claimed by the author): Open source with Windows, Mac, Linux and browser builds; 142 points on Show HN. Source: https://news.ycombinator.com/item?id=50064840 Tools they used: Claude Code Category: Dev & ops Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
You are helping me set up this AI use case end to end in Codex. Goal: Let an AI agent model 3D parts in an open-source CAD app over MCP What the original author did: SolidCraft is an open-source parametric CAD app in pure Rust: sketch, constrain and build solids on a feature timeline. It runs on desktop or in the browser and ships a built-in MCP server so AI agents can do the modeling for you. Reported result (as claimed by the author): Open source with Windows, Mac, Linux and browser builds; 142 points on Show HN. Source: https://news.ycombinator.com/item?id=50064840 Tools they used: Claude Code Category: Dev & ops Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
You are helping me set up this AI use case end to end in Grok Bot. Goal: Let an AI agent model 3D parts in an open-source CAD app over MCP What the original author did: SolidCraft is an open-source parametric CAD app in pure Rust: sketch, constrain and build solids on a feature timeline. It runs on desktop or in the browser and ships a built-in MCP server so AI agents can do the modeling for you. Reported result (as claimed by the author): Open source with Windows, Mac, Linux and browser builds; 142 points on Show HN. Source: https://news.ycombinator.com/item?id=50064840 Tools they used: Claude Code Category: Dev & ops Please: 1. Ask me 3 short questions about my situation (accounts I have, budget, what I want the output to look like). 2. Propose a step-by-step plan using these tools or cheaper alternatives, with the time and cost of each step. Use official pricing pages; say "check pricing" if unsure. 3. Then do the setup with me one step at a time, waiting for my OK before anything that sends messages, posts publicly, spends money or deletes data. 4. Finish with a checklist to run it again next time.
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Guides for this use case
How to vibe code an app with Claude Code · How to run multiple coding agents together · How to build an MCP server for AI agents · How to make 3D scenes and models with AI and Blender
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