Read, create, or edit Excel spreadsheets (.xlsx/.xlsm) — sheet data, formulas, styles, charts, multi-sheet workbooks — and bulk .csv/.tsv tables; use whenever a spreadsheet is the input or the deliverable (extract/analyze data, add columns/formulas/formatting/charts, clean messy tables, build from scratch), but not for Google Sheets API or Word/PDF/script outputs.
Install
npx skills add HKUDS/DeepTutor --skill xlsxnpx skills add HKUDS/DeepTutor --skill xlsx -a claude-code -gnpx skills add HKUDS/DeepTutor --skill xlsx -a codex -ggemini skills install https://github.com/HKUDS/DeepTutor.git --path deeptutor/skills/builtin/xlsxgh skill install HKUDS/DeepTutor xlsxgit clone --depth 1 https://github.com/HKUDS/DeepTutor /tmp/HKUDS__DeepTutor
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/HKUDS__DeepTutor/deeptutor/skills/builtin/xlsx ~/.claude/skills/xlsx # Claude Code
cp -R /tmp/HKUDS__DeepTutor/deeptutor/skills/builtin/xlsx ~/.agents/skills/xlsx # Codex, Cursor, Gemini CLI, Copilot, OpenCode