ZeroScript 1.4.0: Free AI Agent for Roblox Studio Now Connects to Other MCP Servers (Blender, Sketchfab...)

#roblox #ai #gamedev #mcp

If you build games in Roblox Studio and wish you could just talk to an AI and have it write Luau, edit scripts, and build your game world for you, you might not know that a free option already exists.

ZeroScript is a free, open-source browser extension that turns DeepSeek, Gemini, Kimi, GLM, Qwen, or Arena into a full AI agent for Roblox Studio. No API key. No terminal. No coding required to set up. You open a normal AI chat in your browser, and it can read/edit your scripts, run Luau code, generate assets, and control play-testing, directly in Studio.

It's positioned as a free alternative to paid tools like Lemonade.gg or Luamotion, since it works with AI providers that are free to use.

How it works

AI chat (in your browser) -> ZeroScript Extension -> Bridge (your PC) -> Roblox Studio

The extension lives inside the chat page itself. When you type a request, it relays commands to a small local Bridge app running on your PC, which talks to Roblox Studio through Studio's built-in MCP server.

What's new in 1.4.0

The headline feature this update: ZeroScript can now connect to other MCP servers alongside Roblox Studio. This is still experimental, but it's a meaningful shift, since ZeroScript stops being just a Roblox tool and starts being a general-purpose orchestrator.

Concretely, from the panel's menu, you can now add an addon MCP server (Blender, Sketchfab, or any local MCP command). Roblox Studio stays the always-on primary connection, and the AI only reaches for an addon when the task actually needs it. If Roblox Studio goes down but an addon server is still alive, the agent can start in a degraded mode instead of refusing to run entirely.

Practically, this opens the door to workflows like modeling in Blender and importing straight into your Roblox place, all from the same AI chat session.

Other improvements in this release:

Better vision support across providers. Arena, Gemini, GLM, Kimi, and Qwen can now reliably see screen captures or images returned by tools, with a fixed upload flow that no longer silently drops attachments.
Smarter command recovery. If a command gets cut off by the model's own output limit (only missing its closing brackets), ZeroScript now auto-completes and runs it instead of forcing a full retry. Error feedback is also more specific: cut off, bad JSON, missing marker, or wrong format, so the AI can self-correct faster.
More accurate tool status chips, including a fix for a DeepSeek-specific bug where a command's chip showed as finished while the AI was still writing it. ## Supported AI providers

ZeroScript currently works with six free AI chat interfaces:

DeepSeek (chat.deepseek.com) - the most stable, recommended as your default
Google Gemini (gemini.google.com)
Kimi (kimi.com, Moonshot AI)
GLM (chat.z.ai, Z.ai)
Qwen (chat.qwen.ai, Alibaba Cloud)
Arena (arena.ai) - a multi-model playground, use Direct mode only Gemini and Kimi can occasionally be less consistent about sticking to Roblox tool calls in long sessions, that's model behavior rather than an extension bug, and usually a quick nudge or a fresh session fixes it.

What the AI can actually do in Studio

Read and edit scripts
Run Luau code directly
Inspect the game tree and instances
Generate meshes, materials, and models
Browse and insert from the Creator Store
Control play-testing
Remember your project across sessions, thanks to persistent project memory saved inside your place

Getting started

Grab the latest zip from the Releases page and load the extension as unpacked in Edge or Chrome (Developer mode).
Open Roblox Studio, load a place, enable the MCP server once from the Assistant AI panel.
Run start.bat to launch the local Bridge.
Open DeepSeek (or any supported provider) in your browser, click Start session, and start building. There's a full video walkthrough on YouTube if you'd rather watch than read.