## Why Filesystem helpers intentionally run with a minimal environment that excludes proxy variables. After filesystem operations started using the Windows sandbox wrapper, the wrapper derived an empty proxy configuration from that helper environment and compared it with the persistent sandbox setup marker. When the marker contained proxy ports, every filesystem operation appeared to require a firewall update, which could launch elevated setup, show a UAC or loader dialog, and fail operations such as `apply_patch` with error 1223. Filesystem helpers do not use network access, so they should preserve the proxy/firewall state established by normal sandboxed process launches. ## What changed - Add an explicit Windows sandbox proxy-settings mode for reconciling or preserving persistent proxy state. - Use preserve mode for filesystem helpers while normal process launches continue to reconcile proxy settings from their environment. - Carry the selected proxy state consistently through setup validation, elevated setup, and non-elevated ACL refreshes. - Cover wrapper argument propagation and marker-derived proxy preservation. ## Validation - `cargo build -p codex-cli --bin codex` - `just test -p codex-windows-sandbox preserving_proxy_settings_uses_the_existing_marker` - `just test -p codex-windows-sandbox windows_wrapper_args_round_trip` - `just test -p codex-windows-sandbox setup_request_prefers_explicit_proxy_settings` - `just test -p codex-sandboxing transform_for_direct_spawn_windows` - `just test -p codex-exec-server fs_sandbox::tests` - Ran the same sandboxed `fs/writeFile` reproduction against published `0.142.0-alpha.6` and the new CLI. The published CLI launched elevated setup and failed with `ShellExecuteExW ... 1223`; the new CLI completed without elevation. Related to #28359.
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
Run the following on Mac or Linux to install Codex CLI:
curl -fsSL https://chatgpt.com/codex/install.sh | sh
Run the following on Windows to install Codex CLI:
powershell -ExecutionPolicy ByPass -c "irm https://chatgpt.com/codex/install.ps1 | iex"
Codex CLI can also be installed via the following package managers:
# 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.
