## Why `/clear` starts a fresh thread with `InitialHistory::Cleared`, which re-enters the thread/session startup path. That path now builds large async futures through `ThreadManagerState::spawn_thread_with_source`, `Codex::spawn`, and `Session::new`. Separately, TUI config rebuilds for cwd and permission-profile changes build a similarly heavy `ConfigBuilder::build()` future inside the app task. In debug and Bazel runs, those call chains can put enough state on the caller stack to abort before startup or config refresh completes. This change keeps the behavior the same while moving the heaviest future frames off the caller stack. ## What changed - Box `Codex::spawn(...)` in `codex-rs/core/src/thread_manager.rs` before awaiting it from `spawn_thread_with_source`. - Box `Session::new(...)` in `codex-rs/core/src/session/mod.rs` before awaiting it from `Codex::spawn_internal`. - Route `ConfigBuilder::build()` through a small `tokio::spawn` helper in `codex-rs/tui/src/app/config_persistence.rs` so cwd and permission-profile config rebuilds run on a runtime worker stack while preserving error context. ## Verification CI is running on the PR. No new targeted tests were added. This is a mechanical stack-pressure reduction that keeps the existing behavior and error propagation intact.
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.
