Secure
Every skin is checked by the PO9 Validator before it runs. Security-first by default — no arbitrary code, no surprises.
PO9 — The Standard for AI Workspace Skins
The standard for AI workspace skins. One secure, versioned format — .po9-skin — for building, sharing, and deploying themes across the ecosystem.
Why PO9
Section titled “Why PO9”Compatible
A versioned specification and a compatibility promise. Skins built today keep working as the standard evolves.
Open
An open creator ecosystem. Build, share, and deploy — the format belongs to everyone, not one vendor.
How it works
Section titled “How it works”Create with any tool. Run through po9. Build a .po9-skin with AI, code, or the
po9 Creator Kit — no app needed to create. Validate it against the open specification.
Then import it through the po9 App, which re-checks it and applies it to Codex.
The lifecycle is one straight line — from an idea to a running skin:
Create → Validate → Package → Import → Use
Create
Build a .po9-skin with AI, code, or the Creator Kit — no app needed.
Validate
Run the Validator: security, compatibility, structure, version.
Package
Bundle into a single, portable .po9-skin file.
Import & Use
Import through the po9 App — the runtime and trust boundary — to apply your skin to Codex.
Latest
Section titled “Latest”Latest ReleaseDownload PO9 for macOS and Windows.
Creator KitTemplates and tooling to build your first skin.
Specification v1The .po9-skin standard, stable.