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Adam Perry @ OpenAI
236b50125d
## Why We want to remove implicit use of `$CODEX_HOME` from `codex-core` and make embedders responsible for supplying user-level instructions. This also ensures user instructions load when no primary environment is selected. ## What changed Stacked on #27415, which makes `codex exec` surface thread-scoped runtime warnings. - Added `UserInstructionsProvider` to `codex-extension-api`, with absolute source attribution and recoverable loading warnings. - Added `codex-home` with the filesystem-backed provider for `AGENTS.override.md` and `AGENTS.md`, preserving precedence, fallback, trimming, lossy UTF-8 handling, and the existing uncapped global instruction size. - Removed global instruction loading from `Config` and require `ThreadManager` callers to inject a provider. - Load provider instructions once for each fresh root runtime, including runtimes without a primary environment. Running sessions retain their snapshot, while child agents inherit the parent snapshot without invoking the provider. - Keep provider instructions separate while loading project `AGENTS.md`, then assemble the model-visible instructions with the existing ordering, source attribution, warning, and turn-context behavior. - Wired the Codex home provider through the CLI, app server, MCP server, core facade, and thread-manager sample. ## Validation - `just test -p codex-home -p codex-extension-api` - `just test -p codex-core agents_md` - `just test -p codex-core guardian` - `just test -p codex-app-server thread_start_without_selected_environment_includes_only_global_instruction_source` - `just test -p codex-exec warning` - `just bazel-lock-check`
236b50125d
·
2026-06-11 19:28:47 +00:00
7,361 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.