AI CAD Skill & Agent Pack

Downloadable skill and agent pack for building 1:1 mm orthographic 2D blueprints and step-by-step parametric 3D CAD models with FigCraft, CadCraft, SolidCraft, and FreeCAD.

This folder contains the universal AI CAD skill and custom agent definitions used to design SnapS4, BC250, and Plerion.

This pack was created with Gemini, and Claude or any other AI coding model can adapt the steps directly. We included AGENTS.md, GEMINI.md, and CLAUDE.md so any assistant you use can follow the workflow out of the box.

You can download the complete pack as a single ZIP archive or pull just this folder via Git into your own project workspace.

Option 1: Direct ZIP download

Download ZIP archive: ai-cad-skill-pack.zip

Extract the downloaded archive into your workspace:

unzip ai-cad-skill-pack.zip -d my-cad-workspace
cd my-cad-workspace

Option 2: Pull only these files with Git sparse-checkout

If you want to pull just the skill and agent files from our repository without downloading the rest of the meetup repo, run:

git clone --filter=blob:none --no-checkout https://meetup.fargo3d.com/Fargo3d/3DPrintMeetup.git ai-cad-workspace
cd ai-cad-workspace
git sparse-checkout init --cone
git sparse-checkout set Articles/ai-cad-skill-pack
git checkout master

To copy the .agents/, .github/, and steering files straight to your workspace root after checking them out:

cp -r Articles/ai-cad-skill-pack/.agents Articles/ai-cad-skill-pack/.github Articles/ai-cad-skill-pack/AGENTS.md Articles/ai-cad-skill-pack/GEMINI.md Articles/ai-cad-skill-pack/CLAUDE.md .
cp Articles/ai-cad-skill-pack/.cad-tools.example.json .cad-tools.json

What is included in this pack

File Path	Purpose
`AGENTS.md`, `GEMINI.md` & `CLAUDE.md`	Root workspace steering guides for Gemini, Claude, and other AI coding agents covering the routing table, Gate 0 blueprint approval gate, and step-by-step parametric history rules
`.cad-tools.example.json`	Example Step 0 toolchain and target printer build-volume configuration file. Copy to `.cad-tools.json` in your workspace root
`.agents/skills/svg-blueprint-drafter/SKILL.md`	Skill for drafting 1:1 mm (`1 px = 1 mm`) third-angle orthographic Side, Front, and Top blueprints in FigCraft, CadCraft DXF, and SVG
`.agents/skills/cad-qa-inspector/SKILL.md`	Skill for Step 0 intake, steel-ruler photo calibration, EXIF orientation checks, cross-view projection verification, and zero-clash B-rep audits
`.agents/skills/solidcraft-3d-builder/SKILL.md`	Skill for step-by-step parametric 3D modeling in SolidCraft (`parameters.add`, solved 2D sketches, named 3D timeline features, 3MF export, and Vulkan GPU renders)
`.agents/skills/freecad-step-builder/SKILL.md`	Skill for headless FreeCAD (`FreeCADCmd`) parametric `Spreadsheet::Sheet` + `PartDesign::Body` modeling, STEP/STL exports, and standalone HTML/WebGL 3D viewers
`.github/agents/svg-blueprint-drafter.agent.md`	Custom agent definition for the 2D orthographic blueprint drafter
`.github/agents/cad-qa-inspector.agent.md`	Custom agent definition for the QA, metrology, and DFM inspector
`.github/agents/solidcraft-3d-builder.agent.md`	Custom agent definition for the SolidCraft 3D and 3MF builder
`.github/agents/freecad-step-builder.agent.md`	Custom agent definition for the FreeCAD STEP and STL builder

Required Craft & CAD tools

You can install FigCraft and CADCraft directly through the ArtCraft Launcher, download pre-built binaries from each project's GitHub releases, or build them from source in Rust:

Tool	Role in the AI CAD Pipeline	GitHub Repository	Releases & Website
ArtCraft Launcher	One-click installer and updater for the Craft App Suite (`FigCraft`, `CADCraft`, and more)	`storytold/craft-launcher`	Latest Release
FigCraft	1:1 mm 2D vector blueprints, multi-view blueprint boards (`.figcraft`), SVG/PDF/PNG exports, and `figcraft-cli mcp` server. Uses `storytold/craft-fonts` when building from source	`storytold/figcraft`	Latest Release
CADCraft	Precision 1:1 mm 2D CAD drafting, native `.dxf`/`.dwg` generation, and `cadcraft-cli mcp` server	`storytold/cadcraft`	Latest Release
SolidCraft	Parametric 3D CAD solid modeler with editable feature timeline, B-rep clearance audits, 3MF export, Vulkan GPU rendering, and `solidcraft-cli mcp` server	`tangency-labs/solidcraft`	Latest Release \| solidcraft.io
FreeCAD	Optional headless OpenCASCADE (`FreeCADCmd`) parametric `PartDesign::Body` + `Spreadsheet` builder for `.FCStd`, `.step`, and `.stl` exports	`FreeCAD/FreeCAD`	freecad.org

Quick start in your own project

Extract ai-cad-skill-pack.zip or copy .agents/, .github/, and AGENTS.md into your workspace root.
Copy .cad-tools.example.json to .cad-tools.json and set the paths to your installed tools (solidcraft-cli, cadcraft-cli, figcraft-cli, or FreeCADCmd) along with "is_3d_printed": true or false.
Create a project folder such as MyBracket/Source Images/ and drop in photos of your hardware with a steel ruler held flat on the same plane as the features you need to measure.
Give your AI coding agent this kickoff prompt to calibrate the photos and pause at Gate 0:

Follow AGENTS.md. Inspect the ruler photos in MyBracket/Source Images/ with cad-qa-inspector to verify EXIF orientation and calibrate the millimeter scale. Then use svg-blueprint-drafter to draft 1:1 mm Side, Front, and Top 2D orthographic blueprints for [describe your bracket or enclosure] in MyBracket/Drafts/ and stop at Gate 0 so I can verify the measurements before any 3D CAD begins.

Review the 1:1 mm 2D drawings against your physical hardware, apply any dimension corrections, and then tell the agent to proceed to Gate 1 to build the step-by-step parametric 3D CAD assembly.

Last Updated: November 1, 2026

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