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## Why The first auto-review currently creates its Guardian child session on demand, adding avoidable latency before the review can begin. Creating the ordinary Guardian child during parent-session initialization lets that child use the existing session startup WebSocket prewarm before the first escalation. This does not introduce a Guardian-specific prewarm mechanism. ## What changed - initialize the existing Guardian review-session manager owned by `Session` when a thread starts with auto-review enabled and an approval policy that routes to Guardian - use the standard Guardian child-session construction and the existing session startup WebSocket prewarm - preserve the existing reuse-key invalidation and lazy creation fallback when startup initialization fails or the effective review configuration changes - add an integration test that verifies normal root-session startup emits a Guardian `generate=false` prewarm request ## Benchmark I compared release builds against main. Each prompt first ran a non-escalated `sleep 3`, then requested an escalated marker command. | binary | count | avg Guardian duration | median Guardian duration | avg Guardian TTFT | |---|---:|---:|---:|---:| | origin-main | 10 | 4008.7 ms | 3949.5 ms | 3746.5 ms | | session-fix | 10 | 2865.0 ms | 2594.0 ms | 2492.7 ms | Guardian duration fell by 28.5% and Guardian TTFT fell by 33.5%. These measurements cover Guardian review latency; they do not measure parent thread-start latency.
15f448d8b0
·
2026-06-22 11:54:44 -07:00
7,682 Commits
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.