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roblox-security

roblox-security is a skill for Claude Code from TabooHarmony/roblox-brain. It costs 29 tokens per session (659 once invoked), scanned A, original, MIT.

Guidance for reviewing Roblox game code for ways players could exploit it, especially around client-server communication, authority, purchases, permissions, and saved data.

In plain words
What is it for?
Use it to audit authority models, remote events, attacks, purchases, teleports, movement, permissions, economies, and DataStore flows.
Why use it?
It helps ensure the server—not an untrusted game client—decides important game outcomes. This reduces risks such as cheating, forged rewards, and abused remote calls.

Skill for Claude Code

Written for Claude Code: when-to-use in frontmatter.

not rated 162repo +12 changed 22d ago A scan Socket: passSnyk: passSkillSpector: pass 29 tokens original MIT

Good fit Use it to audit authority models, remote events, attacks, purchases, teleports, movement, permissions, economies, and DataStore flows.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tabooharmony/roblox-brain/roblox-security
View source ↗ TabooHarmony/roblox-brain
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 TabooHarmony/roblox-brain --skill roblox-security
Clone the repo
git clone --depth 1 https://github.com/TabooHarmony/roblox-brain

Made for: Claude Code.

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-security

README.md
[![agentmods](https://agentmods.dev/badge/skills/tabooharmony/roblox-brain/roblox-security/github.svg)](https://agentmods.dev/skills/tabooharmony/roblox-brain/roblox-security)
Your own site
<a href="https://agentmods.dev/skills/tabooharmony/roblox-brain/roblox-security"><img src="https://agentmods.dev/badge/skills/tabooharmony/roblox-brain/roblox-security/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-security

Your own site · 80×15
<a href="https://agentmods.dev/skills/tabooharmony/roblox-brain/roblox-security"><img src="https://agentmods.dev/badge/skills/tabooharmony/roblox-brain/roblox-security.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 659 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
  • Socket pass 15 Oct 2026
  • Snyk pass 15 Oct 2026
  • 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 $0.00029 $0.00659
Opus 5.5 $0.00012 $0.00264
Sonnet 5.5 $0.00006 $0.00132
Haiku 4.5 $0.00003 $0.00066

Measured 22d ago against content hash 1d123e218d52, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

roblox-security 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 22d 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/core/roblox-security/SKILL.md · 52 lines

How it starts

The opening of the file, as written. The whole thing — 52 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Roblox Security

When to Load

Load for authority, remote abuse, economy, saves, bans, or sandboxing audits. Remote validation/rate limits: roblox-networking.

Quick Reference

Core: Client is always compromised. The server remains the source of truth, but the implementation depends on the authority model.

Authority Models

  • Classic replication: validate client requests against server state. Never trust client damage, currency, inventory, permissions, or positions.
  • Server Authority: Workspace.AuthorityMode = Server: the server owns core simulation while clients predict and recover from misprediction. Use BindToSimulation() (needs UseFixedSimulation), not blanket Heartbeat correction. Cheap for stock characters, rewrite-scale for authored simulation (full.md).
  • Both: validate attacks, purchases, teleports, permissions, and custom remotes at the server boundary.

Audit Checklist

CRITICAL: Server-authoritative state · Documented authority model · Validate all arg types · Rate limit remotes · Session-lock DataStore · No client currency mutations · ProcessReceipt verification · No secrets in client code

HIGH: Validate custom movement and action transitions · BindToClose protection · Atomic trading · Never trust client values · Use InputActions for simulation input in Server Authority projects · Validate ProximityPrompt/ClickDetector/DragDetector like remotes

MEDIUM: Server cooldowns · server-computed leaderboards · anti-AFK reward checks · TextService filtering · Script sandboxing for third-party code

Enforcement

Enforcement is a product decision with appeal implications. Players:BanAsync/UnbanAsync are server-only and need Players.BanningEnabled; pcall them. Duration, reason limits and device blocks: full.md.

Anti-Patterns

Don't obfuscate client code, use _G for security, kick without logging, over-validate movement, or rely on client anti-cheat.

See references/full.md for detailed examples.

Read the full file on GitHub · 52 lines

Files

What ships with it

1 file 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.

  1. 22d ago Changed · +4 lines · +3 tokens per session 1d123e218d52
  2. 23d ago Changed 35cba3964ce4
  3. 1mo ago Changed · +1 lines 94758f1ae30b
  4. 1mo ago Changed · +4 lines 5f7647c4c030
  5. 2mo ago Changed 1550c1b0d36a
  6. 2mo ago First seen · 43 lines · 26 tokens per session scan A 5b8e467a1ff1

Subscribe to this mod's changes

roblox-security is a skill published in the GitHub repository TabooHarmony/roblox-brain (162 stars, last pushed 23d ago), licensed MIT. It adds 29 tokens to every session and 659 once invoked, about $0.0001 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.

Claude CodeGame developmentSecurityagent-skillsai-skillscodexcursorgame-development
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