Codex Setup Guide

Forthcoming

The author works in Codex every day, and this guide will be written from that work.

Overview

Codex is OpenAI's coding agent. It works in a project's files, as Claude Code does.

In this book, Codex is one of three workspaces, with Claude Code and Kimi Code, that share a project through its files. Agentic Workflows describes how they hand work to each other.

Forthcoming

A full guide is forthcoming. Until it is written, start from these:

• Codex documentation (opens in a new tab) and the Codex repository on GitHub (opens in a new tab), for installation and current features
• Kimi Plugin, to invite Kimi into a Codex session
• Claude Code Setup Guide, for a terminal workspace this book already covers in full

@misc{docs-implementation-agentic-ai-tools-codex-setup-guide-2026,
  author = {Xule Lin},
  title = {Codex Setup Guide},
  year = {2026},
  howpublished = {\url{https://research-memex.org/docs/implementation/agentic-ai-tools/codex-setup-guide}},
  note = {ORCID: 0000-0001-7885-4194}
}