## Why The client and tool pipeline still carried compatibility code for legacy structured shell output. Current shell and apply_patch responses are already plain text for model consumption, so keeping a JSON-serialization path plus shell-item rewrite logic makes the request formatter and tests preserve a format we do not need anymore. ## What Changed - Removed the client-side shell output rewrite from `core/src/client_common.rs`. - Removed the structured exec-output formatter and the shell `freeform` switch so tool emitters use one model-facing formatter. - Collapsed apply_patch/shell serialization tests around the remaining plain-text output expectations and removed duplicate one-variant parameterized cases. - Kept the `ApplyPatchModelOutput::ShellCommandViaHeredoc` compatibility input shape, but no longer treats it as a separate output-format mode. ## Validation - `cargo test -p codex-core client_common` - `cargo test -p codex-core shell_serialization` - `cargo test -p codex-core apply_patch_cli` - `just fix -p codex-core` ## Documentation No external Codex documentation update is needed.
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.
