CarbonLuau v0.3.0 — Experimental Pre-release

CarbonLuau 0.3.0

First qualified experimental release.

CarbonLuau adds bounded, server-side Luau scripting to Carbon-modded Rust
servers. It ships a Carbon source package plus a platform-specific native library
containing the pinned Luau compiler and VM.

Highlights

• Sandboxed scripts, controlled modules and transactional reloads.
• Bounded VM memory, cooperative deadlines and callback queues.
• task.spawn, task.defer and task.delay.
• Experimental Players, Player, Signals/Connections and Commands facade.
• Carbon permission enforcement and status/reload administration.
• Controlled-worker qualification on Windows x64 and glibc Linux x64.

Install

Download the archive matching the server OS. Copy CarbonLuau.cszip to
carbon/plugins, place the one matching native library under
carbon/data/CarbonLuau/native/<rid>, and put init.luau under
carbon/data/CarbonLuau/scripts. See the complete
installation guide.

local Players = game:GetService("Players")

Players.PlayerAdded:Connect(function(Player)
    Player:SendMessage(`Welcome, {Player.Name}`)
end)

Compatibility and limitations

The scripting API is CarbonLuau 0.3.0-experimental; it is not a stable 1.0 API
or a production-readiness claim. Qualification used Carbon 2.0.259.0 and Rust
2633 / Steam build 25230300. Other host versions require affected checks.

Authenticated Steam/network establishment, visible client message receipt,
network-driven player lifecycle events and real same-account reconnect were not
qualified. Shockbyte full-runtime behavior is also unqualified. Cooperative
deadlines are not hard real-time guarantees, and the VM cap is not whole-process
containment. Items, Player:GiveItem and the Items service are not shipped.

See the public API,
API limits and
detailed Phase 5 evidence.