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# Summary GitHub's latest-release endpoint can return compact, single-line JSON. The standalone installer treated release metadata as line-oriented text, so those responses could make asset lookup fail even though the requested assets were present. The regression was introduced by [#31056](https://github.com/openai/codex/pull/31056). That change reused the `/releases/latest` metadata response for both version resolution and asset lookup, exposing the existing formatting-sensitive asset parser to compact responses from that endpoint. This change parses the release metadata once with a one-pass POSIX awk scanner. The scanner tracks JSON strings and nesting, extracts the root release tag plus direct asset name/digest pairs, and produces the same result regardless of whitespace or object field order. It uses POSIX `fold` to bound awk record sizes so compact responses stay fast across awk implementations. Fixes #31520. ## Changes - replace line-oriented release metadata matching with structure-aware parsing - reuse the parsed metadata for latest-version and asset-digest lookup - add regression coverage for compact JSON, reordered fields, nested decoys, and JSON-looking release text ## Design decisions - Keep the installer dependency-free by using standard POSIX tools already required by the shell installer. - Parse only the GitHub release fields the installer consumes, in one pass, instead of vendoring a general JSON library. - Preserve asset-object boundaries so nested or string-encoded `name` and `digest` fields cannot be mistaken for release assets. ## Testing - Tests: focused installer suite locally and on Linux. - Smoke tests: real pretty and compact GitHub release metadata, latest-release resolution, and checksum-asset selection. - Portability: macOS awk plus Linux gawk, mawk, and nawk. - Stress coverage: randomized formatting and field order, adversarial nested/string content, and a synthetic 2,000-asset compact response.
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.