A central workflow guide for developing Roblox games with Rojo, a tool that synchronises files with Roblox Studio. It connects project setup, Studio work, assets, testing, game design, and Luau code guidance.

Use it for Roblox game architecture, project setup, file-to-Studio synchronisation, editor and asset tasks, testing, or game-design planning.

It helps route each development question to the right specialist workflow and keeps a Roblox project versionable in files.

rbx-dev — Skill for Claude Code and Codex by ellmos-ai/skills

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add ellmos-ai/skills --skill rbx-dev

Clone the repo

git clone --depth 1 https://github.com/ellmos-ai/skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/ellmos-ai/skills/rbx-dev/github.svg)](https://agentmods.dev/skills/ellmos-ai/skills/rbx-dev)

Your own site

<a href="https://agentmods.dev/skills/ellmos-ai/skills/rbx-dev"><img src="https://agentmods.dev/badge/skills/ellmos-ai/skills/rbx-dev/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/ellmos-ai/skills/rbx-dev"><img src="https://agentmods.dev/badge/skills/ellmos-ai/skills/rbx-dev.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 182 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,275 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00182	$0.02275
Opus 5.5	$0.00073	$0.00910
Sonnet 5.5	$0.00036	$0.00455
Haiku 4.5	$0.00018	$0.00228

Measured 24d ago against content hash 0a489cbd2450, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

rbx-dev scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 24d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/game-dev/rbx-dev/SKILL.md · 157 lines

How it starts

The opening of the file, as written. The whole thing — 157 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Hinweis: Nicht mit der Roblox Corporation affiliiert; „Roblox" ist eine Marke ihrer Inhaber. „rbx" ist das gängige Community-Kürzel.

Roblox-Dev — Meta-Skill für Roblox-Spieleentwicklung

Zweck

Der zentrale Einstieg für Roblox-Game-Dev mit einem Rojo-basierten, versionierbaren Workflow. Dieser Skill bündelt das übergreifende Wissen — Projektstruktur, Architektur-Pattern und die wichtigsten Luau-Fallstricke — und leitet für Spezialfragen an die drei Unterskills weiter:

Unterskill	Wofür
`/rojo`	Filesystem→Studio-Sync, `default.project.json`, rokit/Wally/Lune, Projekt-Skelett, Sync-Probleme
`/rbx-studio`	Studio-Bedienung, Szene-vs-Code-Modus, Studio-MCP, Asset-Pipeline, Malware-Scan
`/game-design`	Rollen & Teilaufgaben, Entwicklungs-Chains, Game Design Document (KONZEPT.md), Multi-Agent

Routing-Regel: Geht es um Sync/Build/Setup → /rojo. Um Editor/Assets/Testen in Studio → /rbx-studio. Um Konzept/Rollen/Prozess → /game-design. Um Code-Architektur, Luau-Stolperfallen oder den Gesamtablauf → hier bleiben.

Stack auf einen Blick

Sprache: Luau (.luau, nicht .lua). Code englisch, Kommentare/Doku deutsch, UI-Texte deutsch.
Sync: Rojo via rokit (gepinnte Tool-Versionen). Dateisystem = Quelle der Wahrheit.
Tools: Rojo (Sync/Build), Lune (Tests/Skripte außerhalb Studio), Wally (Packages), optional Knit (Service-/Controller-Framework, neue Projekte), Selene (Linter).
Steuerung: Roblox-Studio-MCP für KI-gesteuerte Inspektion/Tests/Asset-Insertion.

Projektstruktur (Standard)

ProjektName/
├── default.project.json     # Rojo-Mapping
├── rokit.toml               # gepinnte Tool-Versionen
├── wally.toml               # Package-Dependencies
├── KONZEPT.md               # Game Design Document
├── src/
│   ├── shared/              # → ReplicatedStorage(.ProjektName.shared)
│   │   ├── Config.luau      # zentrale Werte, States, Gameplay-Parameter
│   │   ├── GameEnums.luau   # Enums, Remote-Namen, Konstanten
│   │   └── *Defs.luau       # Datendefinitionen (Items, Einheiten, Level)
│   ├── server/              # → ServerScriptService(.ProjektName)
│   │   ├── Main.server.luau # EINZIGER Server-Entry-Point (Script)
│   │   └── *Manager.luau    # ModuleScripts, von Main per require() geladen
│   ├── client/              # → StarterPlayerScripts(.ProjektName)
│   │   └── GameClient.client.luau   # Client-Entry-Point (LocalScript)
│   └── gui/                 # → StarterGui(.ProjektName)
│       └── *HUD.client.luau # GUI-Aufbau + Heartbeat-Loop
└── assets/                  # optionale .rbxm/.rbxl (scriptfrei)

Read the full file on GitHub · 157 lines

Files

What ships with it

8 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

24d ago Changed · +182 tokens per session 0a489cbd2450
1mo ago First seen · 157 lines · 0 tokens per session scan A bfec3272c309

Subscribe to this mod's changes

rbx-dev is a skill published in the GitHub repository ellmos-ai/skills (8 stars, last pushed 2d ago), licensed MIT. It adds 182 tokens to every session and 2,275 once invoked, about $0.0007 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Claude Code Game development Python ai-skills anthropic architektur game-design game-dev luau meta roblox rojo studio

rbx-dev

Getting it into your agent

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Nothing flagged

How it starts

Roblox-Dev — Meta-Skill für Roblox-Spieleentwicklung

Zweck

Stack auf einen Blick

Projektstruktur (Standard)

What ships with it

What this file has done since we first saw it

Other skills, from other repositories

design-review

art-bible

asset-spec

localize

vertical-slice

help