Anthropic's spreadsheet skill for reading, editing and creating .xlsx, .xlsm, .csv and .tsv files, with formulas, formatting, charts and data cleanup.
Install
npx skills add anthropics/skills --skill xlsxnpx skills add anthropics/skills --skill xlsx -a claude-code -gnpx skills add anthropics/skills --skill xlsx -a codex -ggemini skills install https://github.com/anthropics/skills.git --path skills/xlsxgh skill install anthropics/skills xlsxgit clone --depth 1 https://github.com/anthropics/skills /tmp/anthropics__skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/anthropics__skills/skills/xlsx ~/.claude/skills/xlsx # Claude Code
cp -R /tmp/anthropics__skills/skills/xlsx ~/.agents/skills/xlsx # Codex, Cursor, Gemini CLI, Copilot, OpenCodeTry this task
Review this workbook’s data and formulas. Add a monthly summary and trend chart, preserving original data and marking missing or anomalous values.
- What to provide
- The workbook, field meanings, metric definitions and desired output.
- What to review
- Check formulas, dates, ranges and aggregation definitions, then inspect chart labels.