Plan Mode in Codex. Similar to Claude code

Thanks for sharing this idea @jon.power, and welcome to the community. Good news: a Plan Mode workflow is already available in Codex. You can instruct Codex to inspect the repository, analyze the task, ask clarifying questions, and produce a proposed implementation and validation plan before making any changes. This is especially useful for larger refactors, migrations, and multi-agent coordination. The current approach is prompt-driven rather than a dedicated UI toggle, but it supports the same separation between planning and execution that you’re describing. You can find more details and examples here: https://developers.openai.com/codex/learn/best-practices That said, a dedicated user-facing toggle could still make this workflow more discoverable and easier to use, so it’s a reasonable feature request. Curious to hear how others are handling planning vs. execution in their Codex workflows. -Mark G.