## Why When an MCP or app tool is configured with approval mode `approve` (always allow), users expect that decision to be authoritative. In guardian auto-review mode, ARC could still return `ask-user`, which then routed the approval question into guardian with the ARC reason as context. That meant a tool explicitly configured as always allowed still went through both safety monitors before running. This change keeps the existing ARC behavior for non-auto-review sessions, but avoids the ARC-to-guardian sequence when `approvals_reviewer = auto_review` and the tool approval mode is `approve`. ## What changed - Short-circuit MCP tool approval handling when `approval_mode == approve` and `approvals_reviewer == auto_review`. - Updated the MCP approval regression test so the auto-review case asserts neither ARC nor guardian is called. - Preserved existing tests that verify ARC can still block always-allow MCP tools outside guardian auto-review mode. ## Verification - `cargo test -p codex-core --lib mcp_tool_call`
npm i -g @openai/codex
or brew install --cask codex
Codex CLI is a coding agent from OpenAI that runs locally on your computer.
If you want Codex in your code editor (VS Code, Cursor, Windsurf), install in your IDE.
If you want the desktop app experience, run
codex app or visit the Codex App page.
If you are looking for the cloud-based agent from OpenAI, Codex Web, go to chatgpt.com/codex.
Quickstart
Installing and running Codex CLI
Install globally with your preferred package manager:
# Install using npm
npm install -g @openai/codex
# Install using Homebrew
brew install --cask codex
Then simply run codex to get started.
You can also go to the latest GitHub Release and download the appropriate binary for your platform.
Each GitHub Release contains many executables, but in practice, you likely want one of these:
- macOS
- Apple Silicon/arm64:
codex-aarch64-apple-darwin.tar.gz - x86_64 (older Mac hardware):
codex-x86_64-apple-darwin.tar.gz
- Apple Silicon/arm64:
- Linux
- x86_64:
codex-x86_64-unknown-linux-musl.tar.gz - arm64:
codex-aarch64-unknown-linux-musl.tar.gz
- x86_64:
Each archive contains a single entry with the platform baked into the name (e.g., codex-x86_64-unknown-linux-musl), so you likely want to rename it to codex after extracting it.
Using Codex with your ChatGPT plan
Run codex and select Sign in with ChatGPT. We recommend signing into your ChatGPT account to use Codex as part of your Plus, Pro, Business, Edu, or Enterprise plan. Learn more about what's included in your ChatGPT plan.
You can also use Codex with an API key, but this requires additional setup.
Docs
This repository is licensed under the Apache-2.0 License.
