Codex CLI

Codex CLI is a command-line coding agent from OpenAI for developers who want an AI assistant that works directly in their local development environment. It is designed to run on your computer rather than in a cloud workspace, and the repository is licensed under Apache-2.0.

You can install it with npm, Homebrew, or download a binary from the GitHub releases page. The project also points to an IDE integration for VS Code, Cursor, and Windsurf, plus a desktop app experience. According to the README, you can sign in with a ChatGPT account or use an API key to get started.

This is a real agentic coding tool, but the public page does not spell out the full level of autonomy or how much confirmation it requires before making changes. The documentation is clearer on setup than on workflow details, so the exact guardrails and task-handling behavior may need to be checked in the fuller docs.

A few product details are still somewhat unclear from the crawled content, especially pricing beyond the note that it can be used with ChatGPT Plus, Pro, Team, Edu, or Enterprise plans, or via API key setup. Since it runs locally, it is a better fit for developers than non-technical users. If you need a general-purpose assistant or a browser-only agent, this is not the right fit.