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codex/codex-rs
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mcgrew-oai dee5f5ea38 Harden package-manager install policy (#19163)
## Summary

This PR hardens package-manager usage across the repo to reduce
dependency supply-chain risk. It also removes the stale `codex-cli`
Docker path, which was already broken on `main`, instead of keeping a
bitrotted container workflow alive.

## What changed

- Updated pnpm package manager pins and workspace install settings.
- Removed stale `codex-cli` Docker assets instead of trying to keep a
broken local container path alive.
- Added uv settings and lockfiles for the Python SDK packages.
- Updated Python SDK setup docs to use `uv sync`.

## Why

This is primarily a security hardening change. It reduces
package-install and supply-chain risk by ensuring dependency installs go
through pinned package managers, committed lockfiles, release-age
settings, and reviewed build-script controls.

For `codex-cli`, the right follow-up was to remove the local Docker path
rather than keep patching it:

- `codex-cli/Dockerfile` installed `codex.tgz` with `npm install -g`,
which bypassed the repo lockfile and age-gated pnpm settings.
- The local `codex-cli/scripts/build_container.sh` helper was already
broken on `main`: it called `pnpm run build`, but
`codex-cli/package.json` does not define a `build` script.
- The container path itself had bitrotted enough that keeping it would
require extra packaging-specific behavior that was not otherwise needed
by the repo.

## Gaps addressed

- Global npm installs bypassed the repo lockfile in Docker and CLI
reinstall paths, including `codex-cli/Dockerfile` and
`codex-cli/bin/codex.js`.
- CI and Docker pnpm installs used `--frozen-lockfile`, but the repo was
missing stricter pnpm workspace settings for dependency build scripts.
- Python SDK projects had `pyproject.toml` metadata but no committed
`uv.lock` coverage or uv age/index settings in `sdk/python` and
`sdk/python-runtime`.
- The secure devcontainer install path used npm/global install behavior
without a local locked package-manager boundary.
- The local `codex-cli` Docker helper was already broken on `main`, so
this PR removes that stale Docker path instead of preserving a broken
surface.
- pnpm was already pinned, but not to the current repo-wide pnpm version
target.

## Verification

- `pnpm install --frozen-lockfile`
- `.devcontainer/codex-install`: `pnpm install --prod --frozen-lockfile`
- `.devcontainer/codex-install`: `./node_modules/.bin/codex --version`
- `sdk/python`: `uv lock --check`, `uv sync --locked --all-extras
--dry-run`, `uv build`
- `sdk/python-runtime`: `uv lock --check`, `uv sync --locked --dry-run`,
`uv build --wheel`
- `pnpm -r --filter ./sdk/typescript run build`
- `pnpm -r --filter ./sdk/typescript run lint`
- `pnpm -r --filter ./sdk/typescript run test`
- `node --check codex-cli/bin/codex.js`
- `docker build -f .devcontainer/Dockerfile.secure -t codex-secure-test
.`
- `cargo build -p codex-cli`
- repo-wide package-manager audit
dee5f5ea38 · 2026-04-24 14:36:19 -04:00
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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

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.