## Why Clients need a stable app-server protocol surface for enrolling a local device key, retrieving its public key, and producing a device-bound proof. The protocol reports `protectionClass` explicitly so clients can distinguish hardware-backed keys from an explicitly allowed OS-protected fallback. Signing uses a tagged `DeviceKeySignPayload` enum rather than arbitrary bytes so each signed statement is auditable at the API boundary. ## What changed - Added v2 JSON-RPC methods for `device/key/create`, `device/key/public`, and `device/key/sign`. - Added request/response types for device-key metadata, SPKI public keys, protection classes, and ECDSA signatures. - Added `DeviceKeyProtectionPolicy` with hardware-only default behavior and an explicit `allow_os_protected_nonextractable` option. - Added the initial `remoteControlClientConnection` signing payload variant. - Regenerated JSON Schema and TypeScript fixtures for app-server clients. ## Stack This is PR 1 of 4 in the device-key app-server stack. ## Validation - `just write-app-server-schema` - `cargo test -p codex-app-server-protocol`
npm i -g @openai/codex
or brew install --cask codex
Codex CLI is a coding agent from OpenAI that runs locally on your computer.
If you want Codex in your code editor (VS Code, Cursor, Windsurf), install in your IDE.
If you want the desktop app experience, run
codex app or visit the Codex App page.
If you are looking for the cloud-based agent from OpenAI, Codex Web, go to chatgpt.com/codex.
Quickstart
Installing and running Codex CLI
Install globally with your preferred package manager:
# Install using npm
npm install -g @openai/codex
# Install using Homebrew
brew install --cask codex
Then simply run codex to get started.
You can also go to the latest GitHub Release and download the appropriate binary for your platform.
Each GitHub Release contains many executables, but in practice, you likely want one of these:
- macOS
- Apple Silicon/arm64:
codex-aarch64-apple-darwin.tar.gz - x86_64 (older Mac hardware):
codex-x86_64-apple-darwin.tar.gz
- Apple Silicon/arm64:
- Linux
- x86_64:
codex-x86_64-unknown-linux-musl.tar.gz - arm64:
codex-aarch64-unknown-linux-musl.tar.gz
- x86_64:
Each archive contains a single entry with the platform baked into the name (e.g., codex-x86_64-unknown-linux-musl), so you likely want to rename it to codex after extracting it.
Using Codex with your ChatGPT plan
Run codex and select Sign in with ChatGPT. We recommend signing into your ChatGPT account to use Codex as part of your Plus, Pro, Business, Edu, or Enterprise plan. Learn more about what's included in your ChatGPT plan.
You can also use Codex with an API key, but this requires additional setup.
Docs
This repository is licensed under the Apache-2.0 License.
