Reduce redundant prompt whitespace and repeated wording while checking that requirements remain intact.
Install
npx skills add alivirgo/Major-AI-Skills --skill system-prompt-minifiernpx skills add alivirgo/Major-AI-Skills --skill system-prompt-minifier -a claude-code -gnpx skills add alivirgo/Major-AI-Skills --skill system-prompt-minifier -a codex -ggemini skills install https://github.com/alivirgo/Major-AI-Skills.git --path skills/system-prompt-minifiergh skill install alivirgo/Major-AI-Skills system-prompt-minifiergit 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/system-prompt-minifier ~/.claude/skills/system-prompt-minifier # Claude Code
cp -R /tmp/alivirgo__Major-AI-Skills/skills/system-prompt-minifier ~/.agents/skills/system-prompt-minifier # Codex, Cursor, Gemini CLI, Copilot, OpenCode