## What Built on the realtime speech-control plumbing merged in #27917. - Add optional `codexResponseHandoffPrefix` to `thread/realtime/start`. - Apply that prefix only to automatic V1 commentary sent through `conversation.handoff.append`; final answers remain unprefixed. - Add opt-in `clientManagedHandoffs`. When true, core suppresses automatic response handoffs and completion output so delivery is controlled by explicit client append APIs. - Preserve existing automatic behavior by default. `codexResponsesAsItems: true` continues to select item routing when client-managed mode is disabled. ## Why Voice clients need two delivery policies: automatic background context with silent commentary instructions and fully client-owned handoffs. Phase-aware prefixing keeps routine commentary silent without suppressing the final answer, while client-managed mode lets an app decide exactly which updates to append. ## Validation - `just fmt` - `cargo test -p codex-app-server-protocol serialize_thread_realtime_start` - `RUST_MIN_STACK=16777216 cargo test -p codex-core --test all conversation_handoff_persists_across_item_done_until_turn_complete` - `RUST_MIN_STACK=16777216 cargo test -p codex-app-server --test all webrtc_v1_client_managed_handoffs_disable_automatic_output` - `RUST_MIN_STACK=16777216 cargo test -p codex-app-server --test all webrtc_v1_final_automatic_handoff_omits_silent_prefix` - `cargo build -p codex-cli --bin codex` - Local Codex Apps compatibility check: 43 focused webview tests passed, and a live voice session routed through the source-built app-server. The explicit `RUST_MIN_STACK` avoids a macOS Tokio test-worker stack overflow seen with the default test environment.
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.
