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## Summary - distinguish expired, non-refreshable stored MCP OAuth credentials from first-time missing credentials - carry a typed `failureReason: "reauthenticationRequired"` on the existing `mcpServer/startupStatus/updated` notification only when user action is required - keep the public MCP auth-status API unchanged and regenerate the app-server protocol schemas and documentation ## Why An MCP server with an expired access token and no usable refresh token currently fails startup without giving clients a reliable, typed recovery signal. The existing startup-status notification is the natural place to carry this state. Its nullable `failureReason` keeps the recovery reason attached to the failed startup transition without adding a one-off notification. Internally, Codex distinguishes first-time login from reauthentication and emits the reason only when the startup error itself requires authentication. ## User impact App clients can prompt an existing user to reconnect an MCP server when automatic recovery is impossible by handling a failed `mcpServer/startupStatus/updated` notification whose `failureReason` is `reauthenticationRequired`. Starting, ready, cancelled, unrelated failures, and first-time setup carry no reauthentication reason. ## Companion app PR - openai/openai#1069582 ## Validation - `just test -p codex-app-server-protocol` — 248 passed; schema fixture tests passed - `cargo check -p codex-app-server -p codex-tui` - `just test -p codex-rmcp-client -p codex-mcp` — 184 passed, 2 skipped - `just test -p codex-protocol -p codex-app-server-protocol -p codex-mcp` — 579 passed - `just write-app-server-schema` - `just fmt`
a6d20ed297
·
2026-06-25 21:50:36 +00:00
7,860 Commits
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
Run the following on Mac or Linux to install Codex CLI:
curl -fsSL https://chatgpt.com/codex/install.sh | sh
Run the following on Windows to install Codex CLI:
powershell -ExecutionPolicy ByPass -c "irm https://chatgpt.com/codex/install.ps1 | iex"
Codex CLI can also be installed via the following package managers:
# 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.