## Why MCP error-code telemetry special-cased Codex Apps: its reported error codes were retained, while codes from every other MCP server were replaced with `unknown`. Error reporting should behave consistently for every MCP server. The server name already identifies where an error came from, so telemetry does not need a separate Codex Apps classification. This follows up on [#28976](https://github.com/openai/codex/pull/28976), which introduced MCP error-code telemetry. ## What changed - Add the MCP server name to call, duration, and error metrics. - Retain bounded, sanitized tool error codes from every MCP server. - Remove `McpErrorCodeSource` and the Codex Apps ownership lookup from telemetry collection. - Use the same metric-tagging path for blocked, rejected, and executed MCP calls. ## Test plan - Verify the complete metric tag set includes the sanitized MCP server name. - Verify error codes from ordinary MCP servers are retained, bounded, and sanitized. - Preserve coverage for request failures, tool-result failures, nested auth failures, and span attributes.
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.
