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## Summary This keeps inter-agent communication on the existing raw response item path and adds a join key for MAv2 tool calls. MAv2 `spawn_agent`, `send_message`, and `followup_task` now stamp the originating tool call id into `ResponseItemMetadata.source_call_id` on the raw `ResponseItem::AgentMessage`. App-server clients can join that raw item back to the existing tool/activity event by call id, while using the raw agent message's existing sender, receiver, and content fields. No new app-server `ThreadItem` or notification type is added. ## Tests - `just fmt` - `just write-app-server-schema` - `just test -p codex-protocol` - `just test -p codex-app-server-protocol` - `just test -p codex-core multi_agent_v2_spawn_returns_path_and_send_message_accepts_relative_path` - `just test -p codex-core multi_agent_v2_followup_task_completion_notifies_parent_on_every_turn` - `just fix -p codex-protocol` - `just fix -p codex-app-server-protocol` - `just fix -p codex-core`
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.