Claude Code and Codex can now share AGENTS.md

One instruction file for Claude Code and Codex.

AGENTS.md holds your project’s rules—things like writing style and when to ask for your approval.

Claude Code now supports it too (v2.1.277+). By default, it falls back to AGENTS.md when no applicable CLAUDE.md is present.

Already have both? Compare them, resolve disagreements and keep the useful rules. Check your setup before deleting anything.

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Claude Code and Codex can now share AGENTS.md

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