robloxstudio-mcp CLAUDE.md

robloxstudio-mcp CLAUDE.md is an instructions file for Claude Code from code-and-relax/robloxstudio-mcp. It costs 774 tokens per session, scanned A, original, MIT.

A set of project instructions for working on a Roblox game through Claude Code. Roblox Studio is the tool used to build Roblox games, and these instructions define the required terminal and calculation methods.

In plain words
What is it for?
Maintaining a 20-level Roblox obstacle course, setting object properties, calculating positions and gaps, and batching project operations.
Why use it?
It prevents commands and calculations from conflicting with the project's Windows and Roblox requirements.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md.

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.

agentmods
npx agentmods add instructions/code-and-relax/robloxstudio-mcp/claude-md
Clone the repo
git clone --depth 1 https://github.com/code-and-relax/robloxstudio-mcp

Made for: Claude Code.

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README.md
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Per session 774 This file is loaded in full into every session.
When invoked 774 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00774 $0.00774
Opus 5 $0.00387 $0.00387
Sonnet 5 $0.00155 $0.00155
Haiku 4.5 $0.00077 $0.00077

Measured 5d ago against content hash 9d31984bb95e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

robloxstudio-mcp CLAUDE.md 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 5d 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.

CLAUDE.md · 56 lines

How it starts

The opening of the file, as written. The whole thing — 56 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md — Reglas mandatorias para este proyecto

Entorno

  • OS: Windows 11, terminal PowerShell (NO bash)
  • Proyecto: Roblox Obby de 20 niveles en Roblox Studio, manipulado via MCP tools

Reglas OBLIGATORIAS

1. PowerShell, NO Bash

  • Todos los comandos de terminal DEBEN ser compatibles con PowerShell
  • NO usar sintaxis bash (&&, ||, heredocs bash, etc.)
  • Usar ; para encadenar comandos, $() para sustitución
  • Comillas: usar comillas dobles por defecto en PowerShell

2. Node.js para cálculos y operaciones batch

  • Todos los cálculos de gaps, posiciones, y lógica de fix DEBEN ejecutarse como scripts Node.js
  • Usar node -e "..." o escribir archivos .js temporales y ejecutar con node script.js
  • NUNCA usar .ps1 scripts para lógica compleja
  • NUNCA hacer cálculos manuales en el chat — siempre usar código

3. MCP tools — Formato correcto

  • set_property con Vector3: usar objeto {"X": n, "Y": n, "Z": n} — NO strings
  • mass_get_property NO soporta Vector3 — usar get_instance_properties individual
  • mass_set_property NO soporta Vector3 — usar set_property individual
  • Máximo ~10 llamadas MCP en paralelo por batch

4. Eficiencia

  • NO hacer una llamada MCP por plataforma cuando se puede calcular todo en un script Node.js primero
  • Calcular TODOS los cambios necesarios en un solo script, luego aplicar en batch
  • Minimizar round-trips: agrupar operaciones

5. Errores conocidos y soluciones

  • Error "unexpected EOF while looking for matching": Ocurre al usar comillas simples en node -e dentro de PowerShell. SOLUCIÓN: Escribir el script a un archivo .js temporal y ejecutar con node archivo.js
  • Vector3 como string: set_property NO acepta "0, 5, -80". DEBE ser {"X":0, "Y":5, "Z":-80}
  • mass_get_property con Vector3: Retorna null/error. Usar get_instance_properties individual
  • Bash syntax en PowerShell: && no funciona, heredocs no funcionan. Usar ; o comandos separados

6. Datos del Obby

  • 20 niveles (Level_01 a Level_20) + Lobby
  • ~135 plataformas total
  • Ruta base: game.Workspace.Obby
  • KillBricks NO son landable — excluir de cálculos de gaps
  • Progresión en eje Z negativo, Y incrementa con altura

Read the full file on GitHub · 56 lines

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.

  1. 5d ago First seen · 56 lines · 774 tokens per session scan A 9d31984bb95e

Subscribe to this mod's changes

robloxstudio-mcp CLAUDE.md is an instructions file published in the GitHub repository code-and-relax/robloxstudio-mcp (0 stars, last pushed 6mo ago), licensed MIT. It adds 774 tokens to every session, about $0.0039 per session on Opus 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 2026-09-01.

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