Codex Executor

About Codex

Codex is one of three Android executors with a full rewrite (alongside Delta and Arceus X). Free, 96% sUNC, classic key system. Status flips from patch to patch — check the badge.

Status & Detection

Codex is working on the current Roblox version as of the Oct 7, 2026 snapshot. Roblox ships patches roughly weekly and every executor needs a quick update on patch day, but the build listed on our site is always the latest one - download it and you're set.

What the sUNC Score Means Here

With a 96% sUNC score, Codex covers virtually the entire Roblox script environment. Universal hub scripts, aim trainers, ESP modules, auto-farms, complex games with custom APIs - practically everything in the script community runs. The remaining percent covers edge-case functions that only a handful of scripts ever touch.

Download Codex

Download Codex - How to Install

Pick the official domain for Codex from our download hub - never a YouTube description or a Discord invite.
On Android: allow "install from unknown sources" in settings, then install the APK.
Launch Roblox, join a game, then attach Codex and execute your script.

Codex for Android

Codex APK installs like any sideloaded app: allow installs from unknown sources in Android settings, open the APK, install, done. Only grab the APK from the official domain - repackaged Codex APKs are the most common stealer delivery on Android, and a legit executor will never ask for accessibility permissions or SMS access.

Features

96% sUNC
Full core rewrite
Built-in script hub
Key system
Post-patch updates

Pros

Near-full sUNC for free
Lightweight APK
Active development
Active community with regular tutorials
Simple UI that beginners pick up fast

Cons

Down at snapshot time (awaiting update)
Android only
Advanced scripts may need workarounds
No official support channel
UI feels dated compared to newer tools

Codex vs Alternatives on Android

Executor	sUNC	Status	Price	Key
DEDelta	100%	WORKING	Free	🔓 keyless
VEVega X	98%	WORKING	Free	🔓 keyless
ARArceus X	90%	WORKING	Free	🔓 keyless
RORonix	88%	WORKING	Free	🔓 keyless
HYHydrogen	88%	WORKING	Free	🔓 keyless
COCodex	96%	WORKING	Free	🔓 keyless

Is Codex Safe?

The Codex build on our site is the verified, safe one. The only real danger in this scene is imitations: fake builds riding popular executor names ship as "updated" or "cracked" versions and quietly steal cookies, passwords and crypto wallets. Golden rule: download Codex only from executors.us.com - never from YouTube descriptions or Discord invites - and scan installers on VirusTotal if you want extra peace of mind (a few false positives are normal for executors).

Verdict

The main backup to Delta on Android: when updated, it runs great.

FAQ - Codex

Is Codex working right now?

Yes. Codex is updated for the current Roblox version - the build on our site is always the latest one.

Is Codex safe?

Yes. The Codex build on our site is verified and safe. The real danger is fake builds: download only via executors.us.com, never from YouTube descriptions or Discord invites, and scan installers on VirusTotal.

Codex not attaching - how to fix?

The most common causes, in order: run Codex as administrator; make sure Roblox is fully launched and you're in a game (not the menu); whitelist the folder in your antivirus (injectors get quarantined mid-attach); reinstall the latest build if a Roblox patch just dropped - old builds attach to nothing.

What scripts can Codex run?

With a 96% sUNC score, Codex covers virtually the entire Roblox script environment. Universal hub scripts, aim trainers, ESP modules, auto-farms, complex games with custom APIs - practically everything in the script community runs. The remaining percent covers edge-case functions that only a handful of scripts ever touch.

How do I fix a Codex error?

First, identify the error type. "Unknown function" means the script needs a higher sUNC executor - nothing you can fix on your side. Attach or injection errors: run as admin, disable antivirus real-time protection, reinstall. Key errors: get a fresh key. If Codex itself won't launch, the build is outdated after a patch - wait for the update.

Does Codex need a key?

No. Codex is fully keyless: download, install and attach - no task walls and no waiting.

Is there a Codex GitHub repo?

Search "Codex GitHub" and check that the repo is linked from the official Codex domain before trusting anything. Fake repos with "fixed" builds are a common scam pattern.