xlsx

97 / 100 · Low risk

Fine to try. Some of what it can do is expected: a coding skill usually runs build and test commands.

By sinhoneyy/master-skills (GitHub) · coding · 17 stars · scanned at commit 8e70b78

Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization. When Claude needs to work with spreadsheets (.xlsx, .xlsm, .csv, .tsv, etc) for: (1) Creating new spreadsheets with formulas and formatting, (2) Reading or analyzing data, (3) Modify existing spreadsheets while preserving formulas, (4) Data analysis and visualization in spreadsheets, or (5) Recalculating formulas

Works with any agent that supports SKILL.md skills.

What this skill can do

Runs commands on your computer

This is disclosed by the author in the skill's SKILL.md or README. Expected for a coding skill.

Found in 7 places.

skills/xlsx/SKILL.md, line 136python recalc.py output.xlsx
skills/xlsx/SKILL.md, line 209python recalc.py <excel_file> [timeout_seconds]
skills/xlsx/SKILL.md, line 214python recalc.py output.xlsx 30

Show 4 more

skills/xlsx/recalc.py, line 31subprocess.run(['soffice', '--headless', '--terminate_after_init'],
skills/xlsx/recalc.py, line 84subprocess.run(['gtimeout', '--version'], capture_output=True, timeout=1, check=False)
skills/xlsx/recalc.py, line 86except (FileNotFoundError, subprocess.TimeoutExpired):
skills/xlsx/recalc.py, line 92result = subprocess.run(cmd, capture_output=True, text=True)

Other copies in this repository

sinhoneyy/master-skills has 1 more folder with a skill named xlsx. This page shows the lowest-scoring copy.

plugins/master-skills-productivity/skills/xlsx 97/100 · Low risk

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'xlsx' ] || [ -L ~/.agents/skills/'xlsx' ]; then echo 'A skill folder named xlsx already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/sinhoneyy/master-skills' "$d" && git -C "$d" checkout --quiet '8e70b780359915a1f197ca37a1add2d4016115a2' -- 'skills/xlsx' && mkdir -p ~/.agents/skills && cp -R "$d"/'skills/xlsx' ~/.agents/skills/'xlsx' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'xlsx' ~/.claude/skills/'xlsx' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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Score history

Date	Version	Score
2026-11-09	`8e70b78`	97