605d43719e
- Added a `/permissions` command with a shorter approval set while keeping `/approvals` for compatibility. (#9561) - Added a `/skill` UI to enable or disable individual skills. (#9627) - Improved slash-command selection by prioritizing exact and prefix matches over fuzzy matches. (#9629) - App server now supports `thread/read` and can filter archived threads in `thread/list`. (#9569, #9571) - App server clients now support layered `config.toml` resolution and `config/read` can compute effective config from a given cwd. (#9510) - Release artifacts now include a stable URL for the published config schema. (#9572) ## Bug Fixes - Prevented tilde expansion from escaping HOME on paths like `~//...`. (#9621) - TUI turn timing now resets between assistant messages so elapsed time reflects the latest response. (#9599) ## Documentation - Updated MCP subcommand docs to match current CLI behavior. (#9622) - Refreshed the `skills/list` protocol README example to match the latest response shape. (#9623) ## Chores - Removed the TUI2 experiment and its related config/docs, keeping Codex on the terminal-native UI. (#9640) ## Changelog Full Changelog: https://github.com/openai/codex/compare/rust-v0.88.0...rust-v0.89.0 - #9576 [bazel] Upgrade to bazel9 @zbarsky-openai - #9606 nit: ui on interruption @jif-oai - #9609 chore: defensive shell snapshot @jif-oai - #9621 fix: Fix tilde expansion to avoid absolute-path escape @tiffanycitra - #9573 define/emit some metrics for windows sandbox setup @iceweasel-oai - #9622 docs: fix outdated MCP subcommands documentation @htiennv - #9623 Update skills/list protocol readme @gverma-openai - #9616 [bazel] Upgrade llvm toolchain and enable remote repo cache @zbarsky-openai - #9624 forgot to add some windows sandbox nux events. @iceweasel-oai - #9633 Add websockets logging @pakrym-oai - #9592 Chore: update plan mode output in prompt @shijie-oai - #9583 Add collaboration_mode to TurnContextItem @charley-oai - #9510 Add layered config.toml support to app server @etraut-openai - #9629 feat: better sorting of shell commands @jif-oai - #9599 fix(tui) turn timing incremental @dylan-hurd-oai - #9572 feat: publish config schema on release @sayan-oai - #9549 Reduce burst testing flake @charley-oai - #9640 feat(tui): retire the tui2 experiment @joshka-oai - #9597 feat(core) ModelInfo.model_instructions_template @dylan-hurd-oai - #9627 Add UI for skill enable/disable. @xl-openai - #9650 chore: tweak AGENTS.md @dylan-hurd-oai - #9656 Add tui.experimental_mode setting @pakrym-oai - #9561 feat(tui) /permissions flow @dylan-hurd-oai - #9653 Fix: Lower log level for closed-channel send @Kbediako - #9659 Chore: add cmd related info to exec approval request @shijie-oai - #9693 Revert "feat: support proxy for ws connection" @pakrym-oai - #9698 Support end_turn flag @pakrym-oai - #9645 Modes label below textarea @charley-oai - #9644 feat(core) update Personality on turn @dylan-hurd-oai - #9569 feat(app-server): thread/read API @owenlin0 - #9571 feat(app-server): support archived threads in thread/list @owenlin0
Codex CLI (Rust Implementation)
We provide Codex CLI as a standalone, native executable to ensure a zero-dependency install.
Installing Codex
Today, the easiest way to install Codex is via npm:
npm i -g @openai/codex
codex
You can also install via Homebrew (brew install --cask codex) or download a platform-specific release directly from our GitHub Releases.
Documentation quickstart
- First run with Codex? Start with
docs/getting-started.md(links to the walkthrough for prompts, keyboard shortcuts, and session management). - Want deeper control? See
docs/config.mdanddocs/install.md.
What's new in the Rust CLI
The Rust implementation is now the maintained Codex CLI and serves as the default experience. It includes a number of features that the legacy TypeScript CLI never supported.
Config
Codex supports a rich set of configuration options. Note that the Rust CLI uses config.toml instead of config.json. See docs/config.md for details.
Model Context Protocol Support
MCP client
Codex CLI functions as an MCP client that allows the Codex CLI and IDE extension to connect to MCP servers on startup. See the configuration documentation for details.
MCP server (experimental)
Codex can be launched as an MCP server by running codex mcp-server. This allows other MCP clients to use Codex as a tool for another agent.
Use the @modelcontextprotocol/inspector to try it out:
npx @modelcontextprotocol/inspector codex mcp-server
Use codex mcp to add/list/get/remove MCP server launchers defined in config.toml, and codex mcp-server to run the MCP server directly.
Notifications
You can enable notifications by configuring a script that is run whenever the agent finishes a turn. The notify documentation includes a detailed example that explains how to get desktop notifications via terminal-notifier on macOS. When Codex detects that it is running under WSL 2 inside Windows Terminal (WT_SESSION is set), the TUI automatically falls back to native Windows toast notifications so approval prompts and completed turns surface even though Windows Terminal does not implement OSC 9.
codex exec to run Codex programmatically/non-interactively
To run Codex non-interactively, run codex exec PROMPT (you can also pass the prompt via stdin) and Codex will work on your task until it decides that it is done and exits. Output is printed to the terminal directly. You can set the RUST_LOG environment variable to see more about what's going on.
Experimenting with the Codex Sandbox
To test to see what happens when a command is run under the sandbox provided by Codex, we provide the following subcommands in Codex CLI:
# macOS
codex sandbox macos [--full-auto] [--log-denials] [COMMAND]...
# Linux
codex sandbox linux [--full-auto] [COMMAND]...
# Windows
codex sandbox windows [--full-auto] [COMMAND]...
# Legacy aliases
codex debug seatbelt [--full-auto] [--log-denials] [COMMAND]...
codex debug landlock [--full-auto] [COMMAND]...
Selecting a sandbox policy via --sandbox
The Rust CLI exposes a dedicated --sandbox (-s) flag that lets you pick the sandbox policy without having to reach for the generic -c/--config option:
# Run Codex with the default, read-only sandbox
codex --sandbox read-only
# Allow the agent to write within the current workspace while still blocking network access
codex --sandbox workspace-write
# Danger! Disable sandboxing entirely (only do this if you are already running in a container or other isolated env)
codex --sandbox danger-full-access
The same setting can be persisted in ~/.codex/config.toml via the top-level sandbox_mode = "MODE" key, e.g. sandbox_mode = "workspace-write".
Code Organization
This folder is the root of a Cargo workspace. It contains quite a bit of experimental code, but here are the key crates:
core/contains the business logic for Codex. Ultimately, we hope this to be a library crate that is generally useful for building other Rust/native applications that use Codex.exec/"headless" CLI for use in automation.tui/CLI that launches a fullscreen TUI built with Ratatui.cli/CLI multitool that provides the aforementioned CLIs via subcommands.