# Roblox Building

> 3D builds via MCP, CSG operations, spatial coordination, Part properties, map design.

- **Type:** Skill
- **Install:** `agentstack add skill-tabooharmony-roblox-brain-roblox-building`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [TabooHarmony](https://agentstack.voostack.com/s/tabooharmony)
- **Installs:** 0
- **Category:** [Agent Skills](https://agentstack.voostack.com/c/agent-skills)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [TabooHarmony](https://github.com/TabooHarmony)
- **Source:** https://github.com/TabooHarmony/roblox-brain/tree/main/skills/roblox-building

## Install

```sh
agentstack add skill-tabooharmony-roblox-brain-roblox-building
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

## When to Load

Load when building physical geometry in Roblox Studio via MCP (execute_luau / run_code) — single objects, room-scale structures, or multi-zone maps. Covers CSG operations, spatial coordination, and platform quirks. See `references/full.md` for complete patterns, build process, and validation scripts.

## Quick Reference

### MCP Statelessness (CRITICAL)
Every MCP call is a blank slate. Re-acquire refs at start of EVERY call. Never guess coords from chat — READ from workspace first.

```luau
local model = workspace:FindFirstChild("MyBuild")
if not model then model = Instance.new("Model"); model.Name = "MyBuild"; model.Parent = workspace end
```

### Player Scale
Player ~5 | Door: 4w×7h | Ceiling: 10-14 (rooms) | Counter: 3.5-4 | Seat: 1.5 | Path: 6+ wide

### Spatial Patterns
- **Geometric Manifest**: Named dims table (`Def = {Width=6, Depth=3, ...}`), no magic numbers
- **Relative Positioning**: All sub-parts offset from anchor CFrame, never hardcoded world coords
- **Grid Snapping**: Snap to 0.125/0.25/0.5 stud increments

### CSG Essentials
- **Epsilon Rule**: Cutters overlap boundaries by ~0.05 studs (coplanar = Z-fighting)
- **Safe Wrapper**: `pcall` SubtractAsync/UnionAsync, verify `result:IsA("BasePart")`, copy CFrame/Color/Material
- **Rules**: Shallow trees. Build near origin, PivotTo destination. No MeshPart/Terrain. `CollisionFidelity.Box` on decorative unions

### Platform Quirks
- **Cylinders**: Extend X-axis. Rotate 90° Z for upright | **Wedges**: Tip +Z default, `-π/2` X = up
- **Neon**: Glows no light — add PointLight child | **Defaults**: Always `Anchored=true`, explicit Color/Material

### Anti-Patterns
Guessing coords | Unanchored | Hardcoded positions | Block-only | Silent CSG fails | >30 parts/call | Default gray

### Build Process (Objects)
Assess → Plan (named dims, anchor) → Build (relative offsets, ≤20 parts/call) → Validate

### Build Process (Maps)
Layout → Ground (floors, Origin) → Zone shells → Landmarks → Fill props → Environment (lighting, spawns)

### Map Folder Structure
`workspace/MapName/` → `Origin` (0,0,0), `Terrain/`, `Zone_*/` (Floor, Walls/, Props/), `Landmarks/`, `Lighting/`, `Spawns/`

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [TabooHarmony](https://github.com/TabooHarmony)
- **Source:** [TabooHarmony/roblox-brain](https://github.com/TabooHarmony/roblox-brain)
- **License:** MIT

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-tabooharmony-roblox-brain-roblox-building
- Seller: https://agentstack.voostack.com/s/tabooharmony
- Browse the marketplace: https://agentstack.voostack.com/browse

---
Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.