MediumClaude Code writes Roblox code that trusts the client. Six skills fix that. | by Skillselion.com | Nov, 2026 | Medium
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Claude Code writes Roblox code that trusts the client. Six skills fix that.

3 min read3 days ago

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Ask Claude Code for a Roblox shop and you can get Luau that runs in Studio and breaks in a live game. The purchase gets granted from a LocalScript. The animation code calls Humanoid:LoadAnimation, which Roblox deprecated in favor of Animator. A particle effect looks fine on a desktop GPU and drops frames on a phone.

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None of those are syntax errors, so the agent does not notice them. A skill can tell it which API to use and which side of the client-server boundary each line belongs on. Install counts below are from the Skillselion catalog on 10 November 2026.

Which Claude Code skill writes safe Roblox Luau?

Start with roblox-luau (9,796 installs). roblox-luau from awesome-gamedev-agent-skills is the most installed Roblox skill in the catalog, and its repo has 8,044 GitHub stars. Its core rule matches the Roblox client-server model: server Scripts own game state, client LocalScripts ask for things, and every RemoteEvent or RemoteFunction call from a client is untrusted until the server checks it.

npx skills add https://github.com/gamedev-skills/awesome-gamedev-agent-skills --skill roblox-luau

Keep purchases and saves on the server

Data loss and purchase bugs cost real players, so this is where a generalist skill is not enough. The nonlooped/roblox-suite ships three server-side specialists:

  • roblox-datastores (409 installs) uses atomic UpdateAsync writes, session locking and versioned metadata for recovery.
  • roblox-networking (419 installs) adds validation and rate limiting on remotes.
  • roblox-gamepasses (412 installs) grants a game pass on the server after PromptGamePassPurchaseFinished and uses ProcessReceipt for developer products.

The rule they share: never grant a benefit from the client.

Use the modern animation API

roblox-animation (661 installs) steers Claude to Animator and AnimationTrack, adds IKControl for posing, and uses marker events to fire effects on the right frame. That marker is the hand-off to roblox-vfx.

Budget effects for phones

The roblox-vfx skill (1,160 installs) builds ParticleEmitter, Beam, Trail and Highlight effects from a particle fill-rate budget instead of guessed Rate and Size values. It also separates one-shot bursts from continuous emitters, so a hit effect does not run as a permanent emitter.

What a skill does not do

A skill is a SKILL.md file. It does not open Roblox Studio. The connection is the MCP server built into Studio: open Assistant, choose Manage MCP Servers, and turn on Enable Studio as MCP server, then use Quick Connect or the official Roblox Studio plugin. Roblox documents the steps in Connect to the Roblox Studio MCP server. Community bridges are older third-party packages, not that official server.

Questions developers ask

Is there a Claude Code skill for Roblox? Yes. roblox-luau (9,796 installs on 10 November 2026) writes Luau and treats remote calls as untrusted until the server validates them.

Can Claude make Roblox animations? Yes, with roblox-animation. It uses Animator, not the deprecated Humanoid:LoadAnimation. It does not open Studio.

The full split, with UI, testing and the setup skill for the Studio server, is in the Skillselion Roblox skills walkthrough, and the install ranking is the Roblox skills leaderboard on Skillselion.

Skillselion is an independent directory of Claude Code, Codex and Cursor extensions ranked by real installs. Not affiliated with Anthropic or Roblox. I work on Skillselion.

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Skillselion.com
Skillselion.com

Written by Skillselion.com

Independent catalog of Claude Code, Codex, and Cursor skills. https://skillselion.com