mom-oai
25a0f6784d
## What Show an inline `ctrl + t to view transcript` hint when exec output is truncated in the main TUI chat view. ## Why Today, truncated exec output shows `… +N lines`, but it does not tell users that the full content is already available through the existing transcript overlay. That makes hidden output feel lost instead of discoverable. This change closes that discoverability gap without introducing a new interaction model. Fixes: CLI-5740 ## How - added an output-specific truncation hint in `ExecCell` rendering - applied that hint in both exec-output truncation paths: - logical head/tail truncation before wrapping - row-budget truncation after wrapping - preserved the existing row-budget behavior on narrow terminals by reserving space for the longer hint line - updated the relevant snapshot and added targeted regression coverage ## Intentional design decisions - **Aligned shortcut styling with the visible footer UI** The inline hint uses `ctrl + t`, not `Ctrl+T`, to match the TUI’s rendered key-hint style. - **Kept the noun `transcript`** The product already exposes this flow as the transcript overlay, so the hint points at the existing concept instead of inventing a new label. - **Preserved narrow-terminal behavior** The longer hint text is accounted for in the row-budget truncation path so the visible output still respects the existing viewport cap. - **Did not add the hint to long command truncation** This PR only changes hidden **output** truncation. Long command truncation still uses the plain ellipsis form because `ctrl + t` is not the same kind of “show hidden output” escape hatch there. - **Did not widen scope to other truncation surfaces** This does not change MCP/tool-call truncation in `history_cell.rs`, and it does not change transcript-overlay behavior itself. ## Validation ### Automated - `just fmt` - `cargo test -p codex-tui` ### Manual - ran `just tui-with-exec-server` - executed `!seq 1 200` - confirmed the main view showed the new `ctrl + t to view transcript` truncation hint - pressed `ctrl + t` and confirmed the transcript overlay still exposed the full output - closed the overlay and returned to the main view ## Visual proof Screenshot/video attached in the PR UI showing: - the truncated exec output row with the new hint - the transcript overlay after `ctrl + t`
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. 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 [--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".
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 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.
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.