I built an AI that writes and runs Luau inside Roblox Studio

Description and use

Cortex is an AI terminal inside Roblox Studio that generates and injects Luau code from plain‑English requests, automatically wrapping changes in change history for undo/redo support.

Problem

Roblox Studio scripting requires boilerplate code and manual editing, slowing development and increasing errors.

Outcome

Cortex automates boilerplate scripting, reduces manual coding effort, and integrates seamlessly with Studio’s undo/redo system, enabling rapid prototyping of common game features.

Workflow

• 1. Install Cortex plugin via github.com/cortex-rbx/roblox-ai-kit
• 2. Open the Cortex terminal inside Roblox Studio
• 3. Type a plain‑English request (e.g., "make a healing potion that gives +25 HP")
• 4. Cortex generates Luau code and applies it to the project (creates Tool, Script, sets properties)
• 5. Verify the result in Studio; use Ctrl+Z to undo if needed
• 6. For editing existing scripts, select the script and give a new request (e.g., "make it respawn the player on death")
• 7. Cortex edits the script’s .Source in place, preserving undo/redo history

Evidence

Cortex AI terminal that lives inside Studio. You type what you want in plain English, it turns that into Luau, and runs it right in your place.

Source

Every change is wrapped in ChangeHistoryService, so Undo/Redo just works.

Source