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## Why Pending model input was split across `Session`, `TurnState`, and the agent mailbox. That made it easy for new paths to manage queued user input or mailbox delivery outside the intended ownership boundary. This PR consolidates the model-facing input lifecycle behind the session input queue so turn-local pending input, next-turn queued items, and mailbox delivery coordination are owned in one place. ## What Changed - Added `session/input_queue.rs` to own pending input queues and mailbox delivery coordination. - Removed the standalone `agent/mailbox.rs` channel wrapper and store mailbox items directly in the input queue. - Moved pending-input mutations off `TurnState`; `TurnState` now exposes the queue-owned storage directly for now. - Routed abort cleanup, mailbox delivery phase changes, next-turn queued items, and active-turn pending input through `InputQueue`. - Boxed stack-heavy agent resume/fork startup futures that the refactor pushed over the default test stack. - Updated session, task, goal, stream-event, and multi-agent call sites and tests to use the new queue ownership. ## Verification - `cargo test -p codex-core --lib agent::control::tests` - `cargo test -p codex-core --lib agent::control::tests::resume_closed_child_reopens_open_descendants -- --exact` - `cargo test -p codex-core --lib agent::control::tests::spawn_agent_fork_last_n_turns_keeps_only_recent_turns -- --exact` - `cargo test -p codex-core --lib agent::control::tests::resume_thread_subagent_restores_stored_nickname_and_role -- --exact` - `cargo test -p codex-core` was also run; it completed with 1814 passed, 4 ignored, and one timeout in `agent::control::tests::resume_thread_subagent_restores_stored_nickname_and_role`, which passed when rerun in isolation.
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.