Codex CLI guides

Learn Codex CLI step by step: install it, sign in, and run your first task. Plain words, copyable commands, checked against the official docs.

  1. Install Codex CLI on a Mac or on WindowsInstall OpenAI's Codex CLI with one copied command, check that it works, and sign in with your ChatGPT plan or an API key. Includes common install fixes.
  2. Your First Session with Codex CLIStart Codex in a project folder, type a first request, choose how much it may do without asking, and learn how to interrupt it and how to quit the session.
  3. Install a Skill in Codex CLIGive Codex a new superpower: install a curated skill with one line, or copy a skill folder into the right place, then pick it from the skills menu.
  4. Add an MCP Connector to Codex CLIConnect Codex CLI to another tool or service with one command, check the connection inside a session, and learn where Codex saves your connectors.