## Summary - Coerce `path: ""` to `None` at the v2 protocol params deserialization boundary for `thread/resume` and `thread/fork`. - Restore the pre-ThreadStore running-thread resume behavior: if `threadId` is already running, rejoin it by id and treat a non-empty `path` only as a consistency check; otherwise cold resume keeps `history > path > threadId` precedence. - Add protocol, resume, and fork regression coverage for empty path payloads; refresh app-server schema fixtures for the clarified params docs. ## Tests - `just fmt` - `just write-app-server-schema` - `cargo test -p codex-app-server-protocol thread_path_params_deserialize_empty_path_as_none` - `cargo test -p codex-app-server-protocol --test schema_fixtures` - `cargo test -p codex-app-server empty_path` - `RUST_MIN_STACK=8388608 cargo test -p codex-app-server --test all thread_resume_rejects_mismatched_path_for_running_thread_id` - `RUST_MIN_STACK=8388608 cargo test -p codex-app-server --test all thread_resume_uses_path_over_non_running_thread_id`
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.
