Codex

Guides to OpenAI Codex across its terminal CLI, IDE extension, desktop app and cloud tasks. Each one is written from OpenAI’s own documentation and pricing pages and states the Codex version or docs date it reflects.

Three dark panels split by two mint seams: white chevrons with a mint underscore, square brackets around three stacked bars with the middle one mint, and curly braces around short grey lines and a mint cursor

Codex · Oct 11

Codex CLI vs Codex app vs IDE extension: which surface to use

What the Codex CLI, the Codex app in the ChatGPT desktop app and the IDE extension each do, and when to pick each.

Dark brackets around a mint-striped band on a pale grid.

Codex · Oct 7

Codex: dangerously skip permissions and safer modes

The exact Codex bypass flag, what it removes, and how to run unattended jobs while keeping a sandbox.

Four angle chevrons pointing right on a dark grid, the last one mint, with a mint cursor bar below them

Codex · Oct 2

Codex hooks: hooks.json, config.toml, events and exit codes

Codex hooks run commands at events like PreToolUse and Stop, set in hooks.json or the hooks table of config.toml.

A row of chevrons ending in a mint chevron and a cursor bar

Codex · Oct 2

What is Codex: OpenAI's coding agent, CLI, IDE and cloud

Codex is OpenAI's coding agent.

The section covers installing and signing in, how Codex usage is counted against a ChatGPT plan or an API key, sandbox and approval modes, AGENTS.md project instructions, MCP servers, skills and hooks. It also answers the questions people ask before choosing a plan, such as what each tier includes and how the five-hour and weekly windows work. Current prices for every Codex plan are tracked in the plans tracker.