OpenAI Codex CLI: Lightweight coding agent that runs in your terminal
a year ago
- #OpenAI
- #Codex CLI
- #Terminal Tool
- Install Codex CLI globally via npm: `npm install -g @openai/codex`
- Set OpenAI API key as environment variable: `export OPENAI_API_KEY="your-api-key-here"`
- Run Codex interactively with `codex` or with a prompt: `codex "explain this codebase to me"`
- Codex CLI offers different approval modes: Suggest (default), Auto Edit, and Full Auto
- Codex runs in a sandboxed environment for security, with network disabled by default
- Supported operating systems: macOS 12+, Ubuntu 20.04+/Debian 10+, or Windows 11 via WSL2
- Requirements include Node.js 22 or newer and 4GB RAM minimum (8GB recommended)
- Codex can be used in pipelines, e.g., GitHub Actions, for automated tasks
- Custom instructions can be added via `~/.codex/instructions.md`
- Contributions are welcome, with high standards for code quality and maintainability
- All commits must include a Signed-off-by footer for licensing purposes