## Summary This fixes a UX bug (https://github.com/openai/codex/issues/10442) where the **"Implement this plan?"** prompt could reappear after switching agents with `/agent` and then switching back to the original agent during plan execution. ## Root Cause On thread switch, the TUI rebuilds `ChatWidget`, replays buffered thread events, then drains any queued live events. In this flow, a `TurnComplete` can be handled twice for the same logical turn: 1. replayed (`from_replay = true`) 2. then live (`from_replay = false`) `ChatWidget` used `saw_plan_item_this_turn` to decide whether to show the plan implementation prompt, but that flag was only reset on `TurnStarted`. If duplicate completion events occurred, stale `saw_plan_item_this_turn = true` could cause the prompt to re-trigger unexpectedly. ## Fix - Clear `saw_plan_item_this_turn` at the end of `on_task_complete`, after prompt gating runs. - This keeps the flag truly turn-scoped and prevents duplicate `TurnComplete` handling from reopening the prompt.
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 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, Team, 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.
