Articles: Codex
CLAUDE.md vs AGENTS.md: which file each coding agent reads
Claude Code now reads AGENTS.md when no CLAUDE.md exists. Here is what Codex, Copilot, Cursor and Gemini CLI read.
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.
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.
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.
Claude Code vs Codex: plans, config, MCP and sandboxes
Claude Code vs Codex: Claude Code needs a paid Claude or Console account; Codex is in every ChatGPT plan, even Free.
Codex usage: five-hour and weekly limits, credits, /status
Codex usage draws on your ChatGPT plan, metered in five-hour and weekly windows; Pro has no five-hour cap. See /status.
What is Codex: OpenAI's coding agent, CLI, IDE and cloud
Codex is OpenAI's coding agent.