## Why Turn construction passed resolved environments through several layers while leaving the environment shell unresolved. As a result, model-visible environment context could fall back to the session shell instead of reporting the selected remote environment's shell. Resolve environment metadata at the turn-context boundary so each turn carries the shell that belongs to its selected environment. Keep request validation in app-server, where invalid selections can be returned as straightforward JSON-RPC errors without coupling core turn construction to that policy. ## What changed - resolve environment selections eagerly in `new_turn_context_from_configuration` - store the full resolved `Shell` on each `TurnEnvironment` - simplify the now-redundant resolved-environment constructor plumbing - keep duplicate and unknown-environment validation as a small app-server preflight - add a remote-environment integration test that runs a full `test_codex` turn and verifies the model-visible environment message reports `bash` ## Testing - `cargo check -p codex-core --test all -p codex-app-server` - `remote_test_env_exposes_bash_shell_to_model` on the Linux remote-executor harness
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.
