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Winston Howes
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## Why The managed MITM trust bundle must be readable by sandboxed commands. Persisting its sibling CA private key under `$CODEX_HOME/proxy` therefore requires a deny-read sandbox rule, but the Windows unelevated backend rejects deny-read paths and WSL1's legacy Landlock path cannot enforce that rule. A persistent OS credential store also does not provide the same cross-platform boundary from other processes running as the same user. Keeping the signer inside the network proxy process avoids both problems: ordinary sandbox setup stays independent of CA-key state, and no private signing key is exposed through the filesystem or a persistent credential record. ## What - generate one managed CA per proxy process and retain its private signer only in proxy memory - emit only content-addressed public CA certificates and trust bundles under `$CODEX_HOME/proxy` - hold a cross-process lease for each active public certificate and prune artifacts from inactive proxy processes - keep all CA ownership in `codex-network-proxy`; no `codex-core` or sandbox-policy changes - validate generated trust-bundle paths by their content hash - keep the public bundle readable by sandboxed commands on Windows, WSL1, macOS, and Linux The independent startup custom-CA follow-up is #29014. ## Validation - `CODEX_HOME=/private/tmp/codex-test-home-network-proxy just test -p codex-network-proxy` (179 tests) - `just bazel-lock-check` - `just fix -p codex-network-proxy` - `just fmt` --------- Co-authored-by: viyatb-oai <viyatb@openai.com>
c5a9a95ab6
·
2026-06-23 12:20:51 -07:00
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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.