How to Install Codex Skin Studio on macOS

Installing Codex Skin Studio on macOS to theme your OpenAI Codex desktop app takes three steps: download, launch injection, pick a skin.

Before you start

• macOS (Apple Silicon or Intel)
• OpenAI Codex desktop app installed
• ~200MB free disk space

Three steps

Step 1: Download

Open codex-skin-studio.shop → click "Download for macOS" → get the installer (.dmg or .zip).

Step 2: Install

Double-click → drag to Applications (or run the setup script). If macOS warns "unidentified developer", go to System Settings → Privacy & Security → "Open Anyway".

Step 3: Launch + pick a skin

Open Codex Skin Studio → click "Start injection" → it connects to the Codex desktop app → pick a skin (Romantic Rose / Fortune God / Red Sci-Fi / Clear Custom...) → applies instantly.

FAQ

• "Cannot be opened"? Go to System Settings → Privacy & Security → Open Anyway. macOS blocks unnotarized apps; this is normal.
• No effect after install? Fully quit Codex before starting injection; or restart Codex.
• Does it modify official Codex files? No — themes are injected via CDP; nothing official is changed. Uninstall restores the original.
• Apple Silicon issues? Optimized for Apple Silicon; report issues on the site.