Roblox Security

This walks Claude through the core principle of Roblox security: never trust the client. It covers the critical patterns like server-side leaderstats, distance and cooldown validation, rate limiting, and argument sanitization. You'll want this whenever you're wiring up RemoteEvents for currency, damage, or any player action that could be spoofed. The skill includes ready-to-use snippets for common checks and a clean validation utility module. The anti-cheat section is basic but functional. One thing to note: it's laser-focused on preventing exploits through remote communication, not broader concerns like asset theft or account security. If you're building any competitive or economy-driven Roblox game, this is essential reference material.

skills.sh installs: 754
GitHub stars: 31
last updated: Aug 21, 2026

View on GitHub

Install

$ npx -y skills add sentinelcore/roblox-skills --skill roblox-security --agent claude-code

Installs into .claude/skills of the current project.

Files

Roblox Security: Anti-Exploit & Server-Side Validation

Core Principle

Never trust the client. Every LocalScript runs on the player's machine and can be modified. All authoritative logic — damage, currency, stats, position changes — must live on the server.

FilteringEnabled is always on in modern Roblox. Client-side changes do not replicate to the server or other clients unless the server explicitly applies them.

Secure vs Insecure Patterns

Pattern	Insecure	Secure
Dealing damage	LocalScript sets `Humanoid.Health`	Server reduces health after validation
Awarding currency	LocalScript increments leaderstats	Server validates action, then increments
Leaderstats ownership	LocalScript owns the IntValue	Server creates and owns all leaderstats
Position changes	LocalScript teleports character	Server validates and moves character
Tool use	Client fires damage on hit	Server raycasts and applies damage
Cooldowns	Client tracks cooldown locally	Server tracks cooldown per player