Felipe CouryandGitHub
5e0a4adbe5
## Why Granular copy is particularly difficult with the current output. Part of it was solved with the introduction of the `/copy` command but when you only need to copy parts of a response, you still encounter some issues: - When you copy a paragraph, the result is a sequence of separate lines instead of one correctly joined paragraph. - When a word wraps, part of it stays on the original line and the rest appears at the start of the next line. - When you copy a long command, extra line breaks are often inserted, and command arguments can be split across multiple lines. https://github.com/user-attachments/assets/0ef85c84-9363-4aad-b43a-15fce062a443 ## Solution Now that we own the scrollback and we re-create it when we resize, we have the opportunity of toggling between the raw text and the rich text we see today. - Add TUI raw scrollback mode with `tui.raw_output_mode`, `/raw [on|off]`, and the configurable `tui.keymap.global.toggle_raw_output` action. - Render transcript cells through rich/raw-aware paths so raw mode preserves source text and lets the terminal soft-wrap selection-friendly output. - Bind raw-mode toggle to `alt-r` by default, with the keybinding path toggling silently while `/raw` continues to emit confirmation messages. ## Related Issues Likely addressed by raw mode: - #12200: clean copy for multiline and soft-wrapped output. Raw mode removes Codex-inserted wrapping/indentation and lets the terminal soft-wrap logical lines. - #9252: command suggestions gain unwanted leading spaces when copied. Raw mode renders transcript text without the rich-mode left padding/gutter. - #8258: prompt output is hard to copy because of leading indentation. Raw mode renders user/source-backed transcript text without that decorative indentation. Partially or conditionally addressed: - #2880: copy/export message as Markdown. Raw mode exposes raw Markdown for terminal selection, but this PR does not add a dedicated export/copy-message command. - #19820: mouse drag selection + copy in the TUI. Raw mode improves terminal-native selection of output/history text, but this PR does not implement in-TUI mouse selection, highlighting, auto-copy, or composer selection. - #18979: copied content is divided into two parts. This should improve cases caused by Codex-inserted wraps/padding in rendered output; if the report is about pasting into the composer/input path, that remains outside this PR. ## Validation - `just write-config-schema` - `just fmt` - `cargo test -p codex-config` - `cargo test -p codex-tui` - `just fix -p codex-tui` - `just argument-comment-lint` - `cargo test -p codex-tui raw_output_mode_can_change_without_inserting_notice -- --nocapture` - `cargo test -p codex-tui raw_slash_command_toggles_and_accepts_on_off_args -- --nocapture` - `cargo test -p codex-tui raw_output_toggle -- --nocapture` - `git diff --check` - `cargo insta pending-snapshots`
Codex CLI (Rust Implementation)
We provide Codex CLI as a standalone 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. If you provide both a prompt argument and piped stdin, Codex appends stdin as a <stdin> block after the prompt so patterns like echo "my output" | codex exec "Summarize this concisely" work naturally. Output is printed to the terminal directly. You can set the RUST_LOG environment variable to see more about what's going on.
Use codex exec --ephemeral ... to run without persisting session rollout files to disk.
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 [--log-denials] [COMMAND]...
# Linux
codex sandbox linux [COMMAND]...
# Windows
codex sandbox windows [COMMAND]...
# Legacy aliases
codex debug seatbelt [--log-denials] [COMMAND]...
codex debug landlock [COMMAND]...
To try a writable legacy sandbox mode with these commands, pass an explicit config override such
as -c 'sandbox_mode="workspace-write"'.
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".
In workspace-write, Codex also includes ~/.codex/memories in its writable roots so memory maintenance does not require an extra approval.
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 becomes 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.
If you want to contribute or inspect behavior in detail, start by reading the module-level README.md files under each crate and run the project workspace from the top-level codex-rs directory so shared config, features, and build scripts stay aligned.