How to connect Claude or ChatGPT to Roblox Studio with MCP

MCP (Model Context Protocol) is the standard way to give an AI app tools. Connect Claude, ChatGPT or Cursor to Roblox Studio through an MCP server, and the AI can read your place, create parts, edit scripts and run playtests itself — instead of you copying code back and forth. There are two ways to do it today. This guide covers both.

Two ways to connect

You pay for your AI app in both cases — the AI does the thinking, the MCP server gives it hands in Studio. The two servers can be connected at the same time.

Option 1: Roblox's built-in MCP server

1. 1

   Turn it on in Studio

   Open the Assistant panel (the button on the right of Studio's top bar), then ⋯ → Manage MCP Servers and turn on Enable Studio as MCP server.

2. 2

   Connect your AI app

   Studio offers quick connect for Claude Code, Claude Desktop, Cursor, Codex CLI, Gemini CLI and VS Code. Pick yours and follow the prompt; Roblox's MCP documentation has the manual setup.

3. 3

   Ask for a change

   The AI can now run Luau in Studio, edit scripts, start and stop Play, take screenshots and generate meshes. Keep Studio open while it works.

Option 2: Rateblox MCP (works in the browser too)

1. 1

   Install the plugin and open your place

   Sign in at rateblox.com, install the Rateblox plugin in Roblox Studio, link it to your account and open the place you want to work on. Studio has to stay open while the AI builds.

2. 2

   Add the server to your AI app

   The server address is https://rateblox.com/api/mcp.

   • Claude (claude.ai, Desktop, mobile): Settings → Connectors → Add custom connector. Name it Rateblox, paste the address, leave the OAuth fields empty.
   • ChatGPT (Plus and Pro): Settings → Apps & Connectors → Advanced → turn on Developer mode, then Create, with OAuth authentication.
   • Cursor and other MCP apps: add the address; apps without OAuth use a personal token from the Connector tab in Rateblox.

   claude mcp add --transport http rateblox https://rateblox.com/api/mcp

3. 3

   Sign in and allow

   Your AI app opens rateblox.com. Sign in and press Allow. In Claude Code, type /mcp to sign in.

4. 4

   Turn it on in a chat and ask

   Enable Rateblox in the chat's tools menu, then describe what you want:

   "Look at my place and tell me what's in Workspace and ServerScriptService."
   "Add a leaderboard with Coins that saves between sessions. Test it in Play."
   "Coins don't save when I rejoin — find the bug and fix it."

Tips for building with an AI app in Studio

• Use the strongest model you have. Building in Studio is a long chain of tool calls; bigger models make fewer mistakes and recover from errors better.
• Ask for a plan first. “Plan this, don't build yet” gives you a chance to cut features before tokens are spent.
• One feature per request, then ask it to test in Play. The same advice as in making a Roblox game with AI.
• Save to Roblox often. Version history is your safety net if a session goes wrong.

Why not just paste code from the chat?

You can, and it's free. But the AI can't see your place, so it guesses names and locations, and you do all the testing. With MCP it reads the real hierarchy, makes the change and checks Output itself.