OpenAI Codex CLI is a lightweight coding agent that runs in your terminal. It is built for developers who prefer using the terminal to get things done. Open Codex CLI is a fork of it that lets you use Gemini, OpenRouter, and Ollama. It uses Chat Completion API instead of the Responses. Just bring your API key, and you are ready to go.
This tool lets you pass screenshots or diagrams. It is fully open source. Simply change your “provider” in your config file. You can find out more here.
