Get started with Codex Styler
Install Codex Styler, connect to OpenAI Codex Desktop through a temporary loopback session, and apply your first reversible theme.
Download and install
Use Download Beta in the site navigation to choose the macOS Apple Silicon DMG or Windows 11 x64 installer EXE. On macOS, drag Codex Styler to Applications, then Control-click it and choose Open on first launch. On Windows, run the per-user NSIS installer.
The macOS Beta is ad-hoc signed but not notarized, and the Windows Beta is not Authenticode-signed. Verify the published checksum and provenance before continuing. Do not disable Gatekeeper or SmartScreen globally.
Install OpenAI Codex Desktop separately. Codex Styler does not bundle, replace, patch, or redistribute the Codex application.
Apply a theme
Open Codex Styler, review the safety guide, choose a starting theme, and select Apply to Codex. If Codex is already open, close it so Styler can relaunch it with a random loopback debugging port.
The connection lives only for that Codex process. Restoring or restarting Codex removes the visual runtime.
Return to official
Select Restore official at any time. Styler removes its isolated scene root and runtime style node, then leaves your Codex installation untouched.