Using the official Codex with zero configuration

Three steps

One: download and install. Pick your platform — Mac with Apple silicon, Mac with Intel, or Windows. The official Codex app is not bundled; install it separately when you need it.

Two: sign in inside the app. The connection and local config are written automatically. There is no service address or key to enter.

Three: launch the official Codex. Balance and top-ups happen in your account.

One-line install

macOS: curl -fsSL https://bestcodex.app/install.sh | sh

Windows (PowerShell): irm https://bestcodex.app/install.ps1 | iex

The script picks the build for your chip, verifies it against SHA256SUMS.txt, installs into Applications, and clears the quarantine attribute for you — so you don't have to run xattr -cr by hand. No sudo, and it writes no configuration.

You still sign in inside the app afterwards; the command line only puts the app in place.

What it changes on your machine

Only the connection config it manages, and it backs that up before writing. If existing local config conflicts with what needs to be written, the launcher takes you to a repair screen for confirmation rather than overwriting in place.

You can restore the pre-takeover snapshot at any time. The official app itself is left untouched.

If the OS blocks the first launch

These are unsigned beta builds. macOS reports “damaged and can't be opened” because of the quarantine attribute — the app is fine. See macOS says the app is damaged.

On Windows, SmartScreen will warn you; verify the source and continue.