Edit the intended source file directly when a temporary replacement would create unnecessary copies or cleanup.
Install
npx skills add alivirgo/Major-AI-Skills --skill in-place-file-mutationnpx skills add alivirgo/Major-AI-Skills --skill in-place-file-mutation -a claude-code -gnpx skills add alivirgo/Major-AI-Skills --skill in-place-file-mutation -a codex -ggemini skills install https://github.com/alivirgo/Major-AI-Skills.git --path skills/in-place-file-mutationgh skill install alivirgo/Major-AI-Skills in-place-file-mutationgit clone --depth 1 https://github.com/alivirgo/Major-AI-Skills /tmp/alivirgo__Major-AI-Skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/alivirgo__Major-AI-Skills/skills/in-place-file-mutation ~/.claude/skills/in-place-file-mutation # Claude Code
cp -R /tmp/alivirgo__Major-AI-Skills/skills/in-place-file-mutation ~/.agents/skills/in-place-file-mutation # Codex, Cursor, Gemini CLI, Copilot, OpenCode