Claude2codex

Claude to Codex (claude2codex)

Synchronize user-created Claude Code skills into Codex.

Scope

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

Default behavior is to sync user/custom Claude skills only. You do not need to include Anthropic built-in system skills because they are not stored in this source folder and Codex already has its own .system.

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

When To Use

Use this skill when the user asks to:

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

Modes

Full Sync

For requests like:

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

Run:

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

Behavior:

• Creates a backup of existing Codex user skills
• Removes all Codex skills except .system
• Copies all skills from Claude source folder into Codex
• 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 Codex"
• "update md2tex skill to Codex"

Run:

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

Behavior:

• Backs up the current Codex 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 touch %USERPROFILE%\.codex\skills\.system
• First try to detect Claude via where claude, then use the matching user Claude data directory
• Treat the discovered Claude skills directory as the source of truth for user skills
• If a skill exists in Claude as a junction/link, copy the real target contents into Codex
• skill.md and SKILL.md should both be accepted as source files
• Prefer writing SKILL.md in Codex targets
• If the user asks whether Anthropic built-in skills should be included, answer: no by default

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.