Treat compatibility as a dated, testable statement
A screenshot or successful installation from months ago cannot prove that the current Codex app, operating system, and upstream source still work together. Compatibility involves the official app distribution, processor architecture, script prerequisites, renderer behavior, local endpoint selection, image processing, and recovery. This page was reviewed on 20 July 2026 and does not claim continuous testing after that date. Before use, compare the current original repository, its recent commits and issues, and the official app state on your machine. Preserve the source commit and environment details so your result can be repeated rather than described only as works for me.
- Record review date and source commit.
- Name official app distribution.
- Include operating system and architecture.
- Retest after any relevant update.
Documented Windows scope
The reviewed upstream Windows guide targets the official Microsoft Store Codex app and lists Node.js 22 or newer with PowerShell. Its lifecycle includes installation, launch, verification, background selection through the current Windows tray experience, and restore. The project documentation describes package-identity checks and a local runtime styling connection rather than repackaging the signed Store application. These are attributed repository facts, not guarantees from OpenAI or CodexSkin. Windows editions, Store package changes, managed-device policy, security software, explicit local-port configuration, and future Codex renderer changes can still affect behavior.
- Official Microsoft Store Codex app.
- Node.js 22 or newer and PowerShell.
- Separate install, start, verify, and restore stages.
- Recheck after Store or project updates.
Documented macOS scope
The reviewed macOS material addresses Apple Silicon and Intel Macs, expects the official Codex app to have been launched, and describes a local configuration under the user account. It says no separate global Node.js installation is required for that workflow. Finder .command launchers cover installation, launch, customization, verification, and restoration, with an optional menu integration. Documented image inputs include several common formats and size limits. Those facts remain source-dependent. Gatekeeper state, architecture, PATH differences between Finder and Terminal, file access, managed-device policy, and future official-app changes can produce environment-specific outcomes.
- Apple Silicon and Intel are addressed.
- Official Codex should open first.
- No separate global Node.js is documented.
- Permission and architecture checks remain environment-specific.
Separate CodexSkin practice notes from upstream facts
CodexSkin’s first-party contribution is editorial organization, composition practice, readability checks, and independent review of public source documentation. The 20:9 canvas, right-side focal zone, left 55% quiet area, and bottom composer exclusion are practical findings for a shared home and task image; they are not platform requirements. CodexSkin does not distribute or alter the helper and does not claim to test every official Codex build. A theme that becomes visible is not automatically compatible: native navigation, task reading, composer use, focus states, verification output, and restore must also work in the user’s actual environment.
- Composition percentages are practice guidance.
- Visibility alone is not compatibility.
- Native interaction and readability must remain intact.
- Restore is part of the compatibility test.
Label unknown or unverified environments honestly
Do not infer support for Linux, unofficial Codex builds, repackaged desktop clients, remote debugging exposure, managed enterprise configurations, prerelease operating systems, or future processor architectures unless the current upstream project explicitly documents them. Absence from an issue tracker is not evidence of support. Likewise, one community comment cannot establish a general compatibility claim. For an unknown environment, read source, determine whether official app identity and platform entry points match, and stop if the workflow would require bypassing security or modifying the signed installation. Ask upstream maintainers before publishing a workaround as supported behavior.
- Unknown does not mean unsupported or supported.
- Do not generalize from one report.
- Avoid unsigned mirrors and repackaged clients.
- Ask upstream before making broad claims.
Build a personal compatibility record
Before relying on the theme, record operating system version, architecture, official Codex source, source commit, prerequisite versions, launcher, image format, and whether home, task, verify, and restore checks pass. After an update, restore first and confirm official Codex independently. Then compare the changed component and rerun the full record. If a failure remains, provide sanitized evidence to the responsible upstream tracker. Remove task content, usernames, tokens, personal paths, and private images. The useful outcome is not a permanent green badge; it is a dated matrix showing what you checked, what remains unknown, and how to return to the official appearance. Keep failed and successful records together so a later change can be associated with one component rather than vaguely attributed to the entire system. Mark skipped checks explicitly instead of letting an empty field look like a successful result.
- Record environment and source precisely.
- Test home, task, verification, and restore.
- Repeat after updates.
- Keep unknown states visible instead of guessing.