replicate-macos-app: Codex skill for authorized macOS rebuilds
A polished macOS replication skill is useful **only** when the operator has rights. On rea.run we frame it as own shipping apps / licensed research — never “clone any commercial title.”
What it is. MIT Codex skill installed via npx skills add. Uses REA (pinned), Build macOS Apps, and Computer Use plugins to investigate behavior and rewrite a new source tree.
Relation to REA. Investigation MCP/skill for macOS apps; complements Electron playbook and browser UI demos.
Authorized workflow. Confirm license/permission → install skill for Codex on that Mac → investigate with Evidence ledger → recreate in a new project named *-replicate.
Evaluation. Strong tooling; compliance tone is the hard part. We reject DRM bypass and unauthorized commercial cloning as out of scope.
Compliance
Only apps you own, ship, or have written permission to study. No App Store “clone anything,” no DRM/license bypass, no credential theft.
Takeaways
- Rights first, tools second.
- Evidence ledgers keep rebuilds honest.
- New source ≠ redistributing the original binary.
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