Codex CLI

The open-source AI coding agent from OpenAI: It brings the power of o4-mini models directly to your terminal for local, secure development.

Codex CLI is OpenAI's open-source, lightweight AI coding agent, leveraging models like o4-mini to execute complex coding tasks directly in your terminal. It translates natural language prompts into executable code, file edits, and shell commands. The tool runs locally in a sandboxed environment, ensuring your source code remains private and secure. Developers gain control via three distinct approval modes: Suggest (default), Auto Edit, and Full Auto. Installation is fast: use `npm install -g @openai/codex` or `brew install --cask codex`.

https://github.com/openai/codex