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Fermisloth
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probuilder-create-poly-shape

Creates extruded 3D meshes from 2D polygon outlines in Unity via ProBuilder.

1|Updated Apr 1, 2026
Search Tags:#unity#level design#polygon#extrusion#probuilder#unity-mcp-cli#3d mesh
One-click install
npx skills add https://github.com/Fermisloth/Project-Aegis-Adaptive-Outbreak-Containment --skill probuilder-create-poly-shape-fermisloth
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: probuilder-create-poly-shape
Source: https://github.com/Fermisloth/Project-Aegis-Adaptive-Outbreak-Containment/tree/main/.agent/skills/probuilder-create-poly-shape
Command: npx skills add https://github.com/Fermisloth/Project-Aegis-Adaptive-Outbreak-Containment --skill probuilder-create-poly-shape-fermisloth

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires unity-mcp-cli.

What problem does it solve? Building custom 3D geometry in Unity from 2D outlines—such as floor plans, terrain patches, or architectural walls—normally requires manual mesh modeling. This Skill generates a ProBuilder mesh directly from an array of 2D points, extruded to a specified height, through a single CLI call. ## Core Features & Use Cases - Polygon-to-Mesh Generation: Define any shape with 3 or more [x,z] points and extrude it upward by a configurable height. - Scene Integration: Optionally set the GameObject name, parent, position, rotation, normal direction, and local-space placement. - Structured Output: Returns instance ID, face/vertex/edge counts, bounds, and input point data for downstream scene manipulation. - Use Case: Generate an L-shaped room layout by passing points=[[0,0],[3,0],[3,2],[1,2],[1,3],[0,3]] with height=3 to instantly create the walls of a building level. ## Quick Start Ask the AI to create a 4x3 rectangular platform 2.5 units tall in the Unity scene using the probuilder-create-poly-shape tool.

Frequently Asked Questions about probuilder-create-poly-shape

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I create a 3D shape from 2D points in Unity?▼

Pass an array of [x,z] coordinates defining the polygon outline to the probuilder-create-poly-shape tool via unity-mcp-cli. The shape is extruded upward by the height parameter, defaulting to 1 unit if omitted.

How to make an L-shaped room with ProBuilder?▼

Define the L-shape outline with six points in order, for example [[0,0],[3,0],[3,2],[1,2],[1,3],[0,3]], and set the desired wall height. The tool generates the extruded mesh as a new GameObject in the scene.

What is the minimum number of points for a polygon shape?▼

A minimum of 3 points is required to form a valid polygon. Points must be provided in clockwise or counter-clockwise order as [x,z] coordinate pairs.

Why is unity-mcp-cli not found when running the tool?▼

The CLI is not installed globally. Install it with npm install -g unity-mcp-cli, or prefix commands with npx unity-mcp-cli. The unity-initial-setup skill covers detailed installation steps.

Can I flip the normals of a generated ProBuilder mesh?▼

Yes, set the flipNormals parameter to true so faces point inward instead of outward. This is useful for interior spaces like rooms where surfaces must be visible from inside.

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