The original title is: "Splitting Work Between Claude Code and Codex on One Mac: Claude Designs, Codex Implements"

Short summary

The author splits work between Claude Code (design, research, review) and Codex CLI (implementation, refactoring) on a single Mac. Codex runs headless via codex exec with timeout and closed stdin. State is persisted to files for resumability. The key insight: delegate only predetermined boilerplate, keep hard design decisions in the main Claude session.

• •Claude Code handles design and review; Codex CLI handles implementation via headless exec
• •Practical tips: close stdin with /dev/null, wrap in timeout, use full nvm path for cron/launchd
• •State persisted to files for cross-engine resumability, mirroring a four-layer memory approach

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