What is patch-codex-fast?

patch-codex-fast is an unofficial tool that modifies the Codex desktop app to unlock features that are normally only available when signed in through ChatGPT's login system. Specifically, it enables Fast/Speed mode and Plugins for users who authenticate using an API key instead of ChatGPT OAuth. It can also optionally add the Zed editor as a remote-capable "Open With" target for Codex SSH sessions. The tool works by modifying the local desktop app bundle, specifically the app.asar file that Electron-based desktop apps use to package their code, and disabling selected Electron integrity checks so the modified app can load. On macOS it re-signs the app after patching. A backup of the original file is created before any changes are made, and a rollback command restores it if something goes wrong. The recommended way to use it is as a Codex skill, installed via the npx skills command. Once installed, you describe what you want to Codex in plain language and it runs the doctor check, applies the patch, and walks you through verifying the result. Direct command-line usage via Python is also supported for debugging or environments where Codex skills are unavailable. Requirements are the Codex desktop app, Node.js with npx, and Python 3. On macOS, codesign from Xcode Command Line Tools is also needed, on Windows, PowerShell is used. The patch tool is written in Python. The README notes this is an unofficial modification and users should accept the tradeoff of running a patched application. The full README is longer than what was provided.