TLDR
You can have Claude talk to Codex for better results at agentic tasks. What works well in May 2026:
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Wire Codex in as an MCP to Claude code. Claude stays as the main loop. Minute of effort, find the latest instructions by search or ask Claude.
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From that point on, Claude can consult Codex.
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Done.
For tasks where code quality matters, you can now use one of the prompting patterns:
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“Come up with the implementation plan, then discuss with Codex. Discuss the feedback. Once the conclusion is reached, implement.”
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Have Claude implement something, then prompt it to ask for Codex to review.
I usually like to prompt the planning, codex review, review discussion and implementation in a single prompt. This way, the human is only brought to context once the dirty work is done.
Footnote
I heard about the approach peripherally about a few months ago.
The method’s effectiveness was vouched to by a colleague a few weeks ago on a Monday. I implemented it for myself the same week Tuesday. By Friday, it seemed odd if someone is not using this method.
This post will either sound mind-blowing to you or completely trivial, depending on where you are located on the AI exponential.