viyatb-oai
3afb185a4f
## Why Managed sessions use `NO_PROXY` to keep a small set of destinations on the direct path by default. The old default also bypassed all IPv4 link-local addresses in `169.254.0.0/16`, which includes metadata endpoints such as `169.254.169.254`. Because `NO_PROXY` is evaluated by the client before the request reaches the managed proxy, requests to that range could skip proxy-side allowlist and local-binding checks entirely. On hosts where a link-local metadata service is reachable, that creates a path to sensitive environment metadata or credentials outside the intended enforcement point. ## What changed - remove the default IPv4 link-local `169.254.0.0/16` bypass from the managed proxy environment - keep the existing loopback and private-network defaults unchanged - update the regression assertion to lock in the narrower default ## Security impact Link-local requests now stay on the managed-proxy path by default, so the proxy can apply configured policy before they reach metadata-style endpoints or other link-local services. ## Verification - `cargo test -p codex-network-proxy` Co-authored-by: Codex <noreply@openai.com>
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.