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Guide · Claude & Claude Code

The Second-Opinion Review Setup

Run Claude Code inside Codex as a second reviewer, then make GPT-6 check every finding. Both prompts included.

Added 11 September 2026. Free.

What’s inside

  • What the loop actually does
  • The run order
  • Step one · Open the project and the terminal
  • Step two · Install Claude Code if you need it, then sign in
  • Step three · The first prompt, review and verify
  • The second prompt · Fix once, then stop
  • Why bother with a second model

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