dce99bc259
- Plan mode is now enabled by default with updated interaction guidance in the plan prompt. (#10313, #10308, #10329) - Personality configuration is now stable: default is friendly, the config key is `personality`, and existing settings migrate forward. (#10305, #10314, #10310, #10307) - Skills can be loaded from `.agents/skills`, with clearer relative-path instructions and nested-folder markers supported. (#10317, #10282, #10350) - Console output now includes runtime metrics for easier diagnostics. (#10278) ## Bug Fixes - Unarchiving a thread updates its timestamp so sidebar ordering refreshes. (#10280) - Conversation rules output is capped and prefix rules are deduped to avoid repeated rules. (#10351, #10309) - Override turn context no longer appends extra items. (#10354) ## Documentation - Fixed a broken image link in the npm README. (#10303) ## Changelog Full Changelog: https://github.com/openai/codex/compare/rust-v0.93.0...rust-v0.94.0 - #10278 feat: show runtime metrics in console @apanasenko-oai - #10285 display promo message in usage error @willwang-openai - #10302 fix(nix): update flake for newer Rust toolchain requirements @douglaz - #10296 chore(features) remove Experimental tag from UTF8 @dylan-hurd-oai - #10303 Fix npm README image link @fouad-openai - #10306 chore(app-server) add personality update test @dylan-hurd-oai - #10308 plan mode prompt @aibrahim-oai - #10305 chore(core) Default to friendly personality @dylan-hurd-oai - #10307 feat(core,tui,app-server) personality migration @dylan-hurd-oai - #10313 enable plan mode @aibrahim-oai - #10120 feat: fire tracking events for skill invocation @alexsong-oai - #10317 feat: Support loading skills from .agents/skills @gverma-openai - #10282 Make skills prompt explicit about relative-path lookup @xl-openai - #10316 Add websocket telemetry metrics and labels @apanasenko-oai - #10314 chore(config) Rename config setting to personality @dylan-hurd-oai - #10310 chore(features) Personality => Stable @dylan-hurd-oai - #10320 Sync system skills from public repo @gverma-openai - #10322 Sync system skills from public repo for openai yaml changes @gverma-openai - #10323 fix(config) config schema newline @dylan-hurd-oai - #10329 Improve plan mode interaction rules @charley-oai - #10280 Bump thread updated_at on unarchive to refresh sidebar ordering @charley-oai - #10350 fix: System skills marker includes nested folders recursively @gverma-openai - #10351 fix(rules) Limit rules listed in conversation @dylan-hurd-oai - #10354 Do not append items on override turn context @pakrym-oai - #10309 fix(core) Deduplicate prefix_rules before appending @dylan-hurd-oai - #10373 chore(core) gpt-5.2-codex personality template @dylan-hurd-oai - #10375 fix(personality) prompt patch @dylan-hurd-oai - #10371 feat: vendor app-server protocol schema fixtures @bolinfest
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.