Codex2claude

Codex to Claude (codex2claude)

Synchronize user-created Codex skills into Claude Code.

Scope

• Source: %USERPROFILE%\.codex\skills
• Exclude from source: %USERPROFILE%\.codex\skills\.system
• Target: Claude user skills folder, auto-discovered from the local Claude environment
• Default target fallback: %USERPROFILE%\.claude\skills

Default behavior is to sync user/custom Codex skills only. Do not copy Codex built-in .system into Claude.

The sync logic should treat both SKILL.md and skill.md as valid skill entry files. When copying to Claude, normalize to SKILL.md so skill discovery is more reliable across environments.

When To Use

Use this skill when the user asks to:

• sync Codex skills to Claude
• update Claude skills from Codex
• replace a Claude skill with the Codex version
• copy one specific skill from Codex to Claude

Modes

Full Sync

For requests like:

• "sync all Codex skills to Claude"
• "update Claude skills from Codex"

Run:

powershell -ExecutionPolicy Bypass -File "\scripts\sync-skills.ps1" -Mode full

Behavior:

• Creates a backup of existing Claude user skills
• Removes all Claude target skills
• Copies all Codex user skills except .system
• Resolves junction/source links by copying real contents
• Normalizes skill.md to SKILL.md when needed
• Verifies sync result before cleaning up backup

Single Skill Sync

For requests like:

• "sync github-trending to Claude"
• "update md2tex skill to Claude"

Run:

powershell -ExecutionPolicy Bypass -File "\scripts\sync-skills.ps1" -Mode single -SkillName github-trending

Behavior:

• Backs up the current Claude copy of that skill if it exists
• Replaces only that one target skill
• Normalizes skill.md to SKILL.md when needed
• Verifies sync result before cleaning up backup

Output Handling

The script prints a JSON summary. Report to the user:

• mode used
• source and target paths
• backup path
• synced skills
• skipped items
• any errors

Notes

• Do not copy %USERPROFILE%\.codex\skills\.system
• First try to detect Claude via where claude, then use the matching user Claude data directory
• Treat %USERPROFILE%\.codex\skills as the source of truth for Codex user skills
• If a skill exists as a junction/link, copy the real target contents
• skill.md and SKILL.md should both be accepted as source files
• Prefer writing SKILL.md in Claude targets

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: phanghonghao
• Source: phanghonghao/THU-Awesome-Skills
• License: MIT

Install and usage instructions live in the source repository linked above.