## Summary - read the request-scoped safety-buffering treatment from HTTP response headers and per-turn WebSocket metadata through one shared header parser - combine that treatment with Responses API safety-buffering signals - propagate `showBufferingUi` and nullable `fasterModel` through the existing `model/safetyBuffering/updated` app-server notification - update the app-server documentation and generated JSON and TypeScript schemas The public implementation contains no model mapping or real model identifier. Tests and protocol examples use generic `current-model` and `faster-model` placeholders only. ## Dependencies - server-side treatment evaluation: https://github.com/openai/openai/pull/1060247 - initial Responses API safety-buffering propagation: https://github.com/openai/codex/pull/29371 - Codex App UI: https://github.com/openai/openai/pull/1057789 ## Validation - Codex API tests: 129 passed - focused Codex core safety-buffering integration test passed - app-server protocol tests passed after regenerating schema fixtures - Clippy fix and repository formatting completed successfully The broader app-server run compiled all changed crates and completed with 1,269 passing tests. Its remaining failures were unrelated environment limitations: macOS sandbox application was denied, one expected test binary was unavailable, and several existing subprocess tests timed out as a result.
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.
