Resolve or inject installation IDs at the host boundary and pass them into ThreadManager and Session as plain Strings. This removes filesystem access from the core session startup path, keeps spawned children on the same installation ID, and propagates startup failures without panicking in mcp-server. Validation: - just fix -p codex-core -p codex-core-api -p codex-app-server -p codex-mcp-server -p codex-thread-manager-sample - just fmt - cargo test -p codex-mcp-server - cargo test -p codex-core --test all includes_conversation_id_and_model_headers_in_request - cargo test -p codex-core --test all chatgpt_auth_sends_correct_request - cargo test -p codex-core --test all prefers_apikey_when_config_prefers_apikey_even_with_chatgpt_tokens - cargo test -p codex-core --test all list_skills_skips_cwd_roots_when_environment_disabled - cargo test -p codex-core --test all with_additional_permissions_requires_approval_under_on_request - cargo test -p codex-core thread_manager::tests::explicit_installation_id_skips_codex_home_file Co-authored-by: Codex <noreply@openai.com>
npm i -g @openai/codex
or brew install --cask codex
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
Install globally with your preferred package manager:
# 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.
