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Shijie Rao
fc8c6b7384
## Why Multi-agent v2 currently carries an explicit-request-only delegation rule in its static usage hint. That provides a safe default, but it prevents clients from selecting proactive delegation per turn without changing static guidance or rewriting prior model context. This change makes delegation mode a session selection that can be updated through `turn/start`, while deriving the effective model-visible mode separately for each turn. Eligible multi-agent v2 turns remain explicit-request-only unless proactive mode is both selected and enabled. ## What changed - Add the experimental `turn/start.multiAgentMode` parameter with `explicitRequestOnly` and `proactive` values. Omission retains the loaded session's current optional selection. - Add the default-off `features.multi_agent_mode` feature gate. Eligible multi-agent v2 turns use the selected mode when enabled; an unset selection or disabled gate resolves to `explicitRequestOnly`. - Treat mode prompting as inapplicable for multi-agent v1 and other unsupported session configurations, producing no multi-agent mode developer message rather than rejecting the turn. - Move the explicit-request-only rule out of the static v2 usage hint and into a bounded, tagged developer context fragment. - Emit the effective mode in initial context and only when that effective mode changes on later turns. - Persist the effective mode in `TurnContextItem` as the durable baseline for resume and context-update comparisons. Historical rollout items are not rewritten. Later mode developer messages establish the current rule incrementally. ## Not covered - Initial selection through `thread/start` and selected-mode reporting from thread lifecycle/settings APIs; those are isolated in the stacked #28792. - A TUI control or slash command for selecting the mode. - Persisting a preferred mode to `config.toml`; selection remains session/turn scoped. - Changes to multi-agent concurrency limits, tool availability, or model catalog capability declarations. - Rewriting historical rollout prompt items. Cold resume restores the latest persisted effective mode when available while leaving historical developer messages intact. ## Verification - `CARGO_INCREMENTAL=0 just test -p codex-core multi_agent_mode` - Focused app-server coverage verifies that `turn/start.multiAgentMode` produces proactive developer instructions for an eligible v2 turn. ## Stack Followed by #28792, which adds `thread/start` initialization and lifecycle/settings observability.
fc8c6b7384
·
2026-06-18 22:47:51 -07:00
7,635 Commits
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.