Use when tasks involve creating, editing, analyzing, or formatting spreadsheets (`.xlsx`, `.csv`, `.tsv`) using Python (`openpyxl`, `pandas`), especially when formulas, references, and formatting need to be preserved and verified. Originally from OpenAI's curated skills catalog.
Install
npx skills add trailofbits/skills-curated --skill openai-spreadsheetnpx skills add trailofbits/skills-curated --skill openai-spreadsheet -a claude-code -gnpx skills add trailofbits/skills-curated --skill openai-spreadsheet -a codex -ggemini skills install https://github.com/trailofbits/skills-curated.git --path plugins/openai-spreadsheet/skills/openai-spreadsheetgh skill install trailofbits/skills-curated openai-spreadsheetgit clone --depth 1 https://github.com/trailofbits/skills-curated /tmp/trailofbits__skills-curated
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/trailofbits__skills-curated/plugins/openai-spreadsheet/skills/openai-spreadsheet ~/.claude/skills/openai-spreadsheet # Claude Code
cp -R /tmp/trailofbits__skills-curated/plugins/openai-spreadsheet/skills/openai-spreadsheet ~/.agents/skills/openai-spreadsheet # Codex, Cursor, Gemini CLI, Copilot, OpenCode