roblox-studio

roblox-studio is a skill for Claude Code, Codex from XAIHT/Tlamatini. It costs 120 tokens per session (2,931 once invoked), scanned A, original, MIT.

A runbook for building and editing Roblox Studio projects through an MCP connection. Roblox Studio is the editor used to create Roblox games and experiences.

In plain words
What is it for?
Use it to create or modify terrain, parts, scripts, models, and materials in an open Roblox Studio place.
Why use it?
It checks the Studio connection first and provides a structured way to build, inspect, and verify changes.

Skill for Claude CodeCodex

Which agent this was written for is unclear — built for openclaw. Also seen: built for openclaw.

Needs its repository: it reads a path above its own folder, which exists only inside the repository. The line is Current release: **[v1.91.0](../../../../docs/changes/2026-10-23-v1.91.0.md)**. Dated records below retain their original evidence dates..

Good fit Use it to create or modify terrain, parts, scripts, models, and materials in an open Roblox Studio place.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/XAIHT/Tlamatini
agentmods
npx agentmods add skills/xaiht/tlamatini/roblox_studio

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.

agentmods badge for roblox-studio

README.md
[![agentmods](https://agentmods.dev/badge/skills/xaiht/tlamatini/roblox_studio/github.svg)](https://agentmods.dev/skills/xaiht/tlamatini/roblox_studio)
Your own site
<a href="https://agentmods.dev/skills/xaiht/tlamatini/roblox_studio"><img src="https://agentmods.dev/badge/skills/xaiht/tlamatini/roblox_studio/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.

agentmods 80×15 button for roblox-studio

Your own site · 80×15
<a href="https://agentmods.dev/skills/xaiht/tlamatini/roblox_studio"><img src="https://agentmods.dev/badge/skills/xaiht/tlamatini/roblox_studio.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 120 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,931 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00120 $0.02931
Opus 5.5 $0.00048 $0.01172
Sonnet 5.5 $0.00024 $0.00586
Haiku 4.5 $0.00012 $0.00293

Measured yesterday against content hash 18a4b52739cc, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

roblox-studio 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 yesterday.

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.

Tlamatini/agent/skills_pkg/roblox_studio/SKILL.md · 178 lines

How it starts

The opening of the file, as written. The whole thing — 178 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Roblox Studio — build it right, build it once, make it look REAL

Current release: v1.91.0. Dated records below retain their original evidence dates.

HEADLESS IS FORBIDDEN. VISIBLE FOREGROUND EXECUTION ONLY. Every command, automated test, diagnostic, script, build, agent and browser must run in a visible foreground window on Angela's real desktop. Use forked CMD/PowerShell windows, execute_forked_window: true, and headless: false. Monitor live; if visibility cannot be confirmed, do not run. Read the mandatory execution policy.

Runbook for anything built or edited in Roblox Studio. The tools are the External-MCP tools ext__Roblox_Studio__<tool> (need Multi-Turn + ACPX on). Work as an OPERATOR: preflight, build in a FEW big scripts, verify, report.

STEP 0 — Preflight (ALWAYS, before any build)

  1. external_mcp_status — is Roblox_Studio connected? If not: external_mcp_reconnect, then external_mcp_wait (a first-run stdio child takes seconds).
  2. list_roblox_studios → if more than one, set_active_studio on the intended one.
  3. get_studio_state — a place must be open with the plugin connected.
  4. No Studio connected: STOP and say "Open Roblox Studio with a place, make sure the MCP plugin is running, then say go." Never fake a build.

Tool map

Want to… Use
Run ANY Luau (terrain, parts, scripts, properties) execute_luau — the workhorse
Wait for an async generate_* job wait_job_finished
See errors / prints get_console_output
Read the scene tree inspect_instance, search_game_tree
AI-generate an organic mesh/model/material generate_mesh, generate_procedural_model, generate_material (async → poll)
Marketplace asset search_asset → insert_asset
Author/read scripts multi_edit, script_read, script_search, script_grep
See the result screen_capture

Read the full file on GitHub · 178 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. yesterday Changed 18a4b52739cc
  2. 2d ago Changed c9b1d896088c
  3. 4d ago Changed c6a1048df811
  4. 5d ago Changed 0f4cd4a50343
  5. 7d ago Changed · +3 lines 7e67b28e6f4b
  6. 1mo ago Changed · +18 lines e88f2f2db23b
  7. 1mo ago First seen · 157 lines · 120 tokens per session scan A 6a89e65c4bc0

Subscribe to this mod's changes

roblox-studio is a skill published in the GitHub repository XAIHT/Tlamatini (15 stars, last pushed yesterday), licensed MIT. It adds 120 tokens to every session and 2,931 once invoked, about $0.0005 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 2026-08-30.

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