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## Why Intel macOS release binaries crash on the first Code Mode tool call while V8 creates its code range. The x86_64 V8 allocator later makes a non-`MAP_JIT` reservation executable, which Hardened Runtime rejects when the signature contains only `com.apple.security.cs.allow-jit`. Tracks [SE-8006](https://linear.app/openai/issue/SE-8006/intel-macos-codex-cli-crashes-in-v8-startup-on-gpt-56-sol-tool-calls). Fixes #28390. ## What - add an expanded entitlement profile only for x86_64 `codex` and `codex-app-server`, the release binaries that link V8 - keep arm64 and `codex-responses-api-proxy` on the existing narrower profile - share one fail-closed target/binary selector between signing and final verification - verify the expected Mach-O architecture and exact entitlement dictionary for the signed binary, tar.gz, zstd, package, and DMG copies ## Verification - `just test-github-scripts` (34 tests) - `UV_CACHE_DIR=/private/tmp/codex-uv-cache just fmt-check` - `bash -n .github/scripts/macos-signing/select_codex_entitlements.sh` - `plutil -lint` on both entitlement profiles - parsed `rust-release.yml` as YAML - `git diff --check` - ad-hoc Hardened Runtime signing smoke on an x86_64 Mach-O slice: strict `codesign` verification passed; the Codex profile contained exactly both keys and the proxy profile retained exactly `allow-jit` ## Release validation Run a native Intel smoke of the final Developer ID-signed x86_64 Codex binary through V8 isolate creation before shipping. PR #30849 is diagnostic scaffolding, but its non-sandbox release job currently fails in the harness before V8 starts, so it is not counted as coverage here.
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.