3395ebd96e
What - Limit the TUI "user shell" output panel by the number of visible screen lines rather than by the number of logical lines. - Apply middle truncation after wrapping, so a few extremely long lines cannot expand into hundreds of visible lines. - Add a regression test to guard this behavior. Why When the `ExecCommandSource::UserShell` tool returns a small number of very long logical lines, the TUI wraps those lines into many visual lines. The existing truncation logic applied `USER_SHELL_TOOL_CALL_MAX_LINES` to the number of logical lines *before* wrapping. As a result, a command like: - `Ran bash -lc "grep -R --line-number 'maskAssetId' ."` or a synthetic command that prints a single ~50,000‑character line, can produce hundreds of screen lines and effectively flood the viewport. The intended middle truncation for user shell output does not take effect in this scenario. How - In `codex-rs/tui/src/exec_cell/render.rs`, change the `ExecCell` rendering path for `ExecCommandSource::UserShell` so that: - Each logical line from `CommandOutput::aggregated_output` is first wrapped via `word_wrap_line` into multiple screen lines using the appropriate `RtOptions` and width from the `EXEC_DISPLAY_LAYOUT` configuration. - `truncate_lines_middle` is then applied to the wrapped screen lines, with `USER_SHELL_TOOL_CALL_MAX_LINES` as the limit. This means the limit is enforced on visible screen lines, not logical lines. - The existing layout struct (`ExecDisplayLayout`) continues to provide `output_max_lines`, so user shell output is subject to both `USER_SHELL_TOOL_CALL_MAX_LINES` and the layout-specific `output_max_lines` constraint. - Keep using `USER_SHELL_TOOL_CALL_MAX_LINES` as the cap, but interpret it as a per‑tool‑call limit on screen lines. - Add a regression test `user_shell_output_is_limited_by_screen_lines` in `codex-rs/tui/src/exec_cell/render.rs` that: - Constructs two extremely long logical lines containing a short marker (`"Z"`), so each wrapped screen line still contains the marker. - Wraps them at a narrow width to generate many screen lines. - Asserts that the unbounded wrapped output would exceed `USER_SHELL_TOOL_CALL_MAX_LINES` screen lines. - Renders an `ExecCell` for `ExecCommandSource::UserShell` at the same width and counts rendered lines containing the marker. - Asserts `output_screen_lines <= USER_SHELL_TOOL_CALL_MAX_LINES`, guarding against regressions where truncation happens before wrapping. This change keeps user shell output readable while ensuring it cannot flood the TUI, even when the tool emits a few extremely long lines. Tests - `cargo test -p codex-tui` Issue - Fixes #7447 |
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| .. | ||
| .cargo | ||
| .config | ||
| .github/workflows | ||
| ansi-escape | ||
| app-server | ||
| app-server-protocol | ||
| app-server-test-client | ||
| apply-patch | ||
| arg0 | ||
| async-utils | ||
| backend-client | ||
| chatgpt | ||
| cli | ||
| cloud-tasks | ||
| cloud-tasks-client | ||
| codex-api | ||
| codex-backend-openapi-models | ||
| codex-client | ||
| common | ||
| core | ||
| docs | ||
| exec | ||
| exec-server | ||
| execpolicy | ||
| execpolicy-legacy | ||
| feedback | ||
| file-search | ||
| keyring-store | ||
| linux-sandbox | ||
| lmstudio | ||
| login | ||
| mcp-server | ||
| mcp-types | ||
| ollama | ||
| otel | ||
| process-hardening | ||
| protocol | ||
| responses-api-proxy | ||
| rmcp-client | ||
| scripts | ||
| stdio-to-uds | ||
| tui | ||
| utils | ||
| windows-sandbox-rs | ||
| .gitignore | ||
| Cargo.lock | ||
| Cargo.toml | ||
| clippy.toml | ||
| code | ||
| config.md | ||
| default.nix | ||
| deny.toml | ||
| justfile | ||
| README.md | ||
| rust-toolchain.toml | ||
| rustfmt.toml | ||
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? Follow the walkthrough in
docs/getting-started.mdfor prompts, keyboard shortcuts, and session management. - Already shipping with Codex and want deeper control? Jump to
docs/advanced.mdand the configuration reference atdocs/config.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.
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.