Codex forces `core.fsmonitor=false` on internal Git commands so a repository cannot select an executable fsmonitor helper. This also disables Git's built-in daemon for `status`, `diff`, and `ls-files`, turning those worktree reads into full scans in large repositories. Read the raw effective `core.fsmonitor` value and preserve it only when Git interprets it as true and advertises built-in daemon support through `git version --build-options`. Query uncommon boolean spellings back through Git using the exact effective value. Unset, false, helper paths, malformed values, probe failures, and unsupported Git builds continue to force `core.fsmonitor=false`. Centralize this policy in `git-utils` while keeping process execution in the existing local and workspace-command adapters. Probe once per worktree workflow and reuse the result for its Git commands, including the TUI `/diff` path. Metadata-only commands and repository discovery remain disabled without probing. Each probe and requested Git process keeps its own existing timeout, and the decision is not cached because layered and conditional Git configuration can change while Codex runs. --------- Co-authored-by: Chris Bookholt <bookholt@openai.com>
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.
