xlsx

65 / 100 · Review before installing

Check before installing. Some of what it can do is expected: a data skill usually connects to databases or online services with your credentials.

By asgeirtj/system_prompts_leaks (GitHub) · data · 71,387 stars · scanned at commit 2209631

Use this skill any time a spreadsheet file is the primary input or output. This means any task where the user wants to: open, read, edit, or fix an existing .xlsx, .xlsm, .csv, or .tsv file; create a new spreadsheet from scratch or from other data sources; analyze data and output results as an Excel file with charts; convert between tabular file formats (CSV/TSV/JSON/PDF-table → XLSX, or XLSX → CSV/JSON); clean, merge, pivot, or transform tabular data. Trigger especially when the user reference…

Works with any agent that supports SKILL.md skills.

What this skill can do

Runs commands on your computer

The author does not mention this.

Found in 2 places.

GLM/skills/xlsx/SKILL.md, line 17source "<skill_directory>/env_setup/env_check.sh"
GLM/skills/xlsx/SKILL.md, line 185XLSX_SKILL_DIR="<skill_directory>" # ← parent directory of this SKILL.md

Downloads and installs other software

The author does not mention this.

Found in 15 places.

GLM/skills/xlsx/SKILL.md, line 264`brew install --cask libreoffice`; Linux (Debian/Ubuntu) `sudo apt install libreoffice-core`;
GLM/skills/xlsx/env_setup/setup.md, line 57brew install python3
GLM/skills/xlsx/env_setup/setup.md, line 58python3 -m pip install openpyxl XlsxWriter

Show 12 more

GLM/skills/xlsx/env_setup/setup.md, line 59brew install --cask libreoffice # on demand (not substitutable) — prefer the Tsinghua mirror below
GLM/skills/xlsx/env_setup/setup.md, line 65sudo apt install python3 python3-pip
GLM/skills/xlsx/env_setup/setup.md, line 66python3 -m pip install openpyxl XlsxWriter
GLM/skills/xlsx/env_setup/setup.md, line 67sudo apt install libreoffice-core # on demand (not substitutable) — prefer the Tsinghua mirror below
GLM/skills/xlsx/env_setup/setup.md, line 74python -m pip install openpyxl XlsxWriter
GLM/skills/xlsx/env_setup/setup.md, line 175python3 -m pip install -i https://pypi.tuna.tsinghua.edu.cn/simple \
GLM/skills/xlsx/env_setup/setup.md, line 183python -m pip install -i https://pypi.tuna.tsinghua.edu.cn/simple --trusted-host pypi.tuna.tsinghua.edu.cn openpyxl XlsxWriter
GLM/skills/xlsx/env_setup/setup.md, line 235sudo apt-get install -f -y # resolve any missing dependencies
GLM/skills/xlsx/env_setup/setup.md, line 242`sudo apt install libreoffice-core` from the distro repo remains an acceptable fallback if the
GLM/skills/xlsx/env_setup/setup.md, line 260`brew install --cask libreoffice` is the fallback if the mirror is unreachable.
GLM/skills/xlsx/quality/pipeline.md, line 28> `.../libreoffice/stable/`), with `brew install --cask libreoffice` /
GLM/skills/xlsx/quality/pipeline.md, line 29> `sudo apt install libreoffice-core` / `winget install TheDocumentFoundation.LibreOffice` as

Connects to the internet

The author does not mention this. Expected for a data skill.

Found in 3 places.

GLM/skills/xlsx/env_setup/setup.md, line 232curl -fSLO "$BASE/LibreOffice_${LO_VER}_Linux_${LO_TAG}_deb.tar.gz"
GLM/skills/xlsx/env_setup/setup.md, line 253curl -fSLO "$BASE/LibreOffice_${LO_VER}_MacOS_${LO_TAG}.dmg"
GLM/skills/xlsx/env_setup/setup.md, line 271Invoke-WebRequest -Uri "$Base/LibreOffice_${LoVer}_Win_${LoTag}.msi" -OutFile $Msi

Changes files outside its own folder

The author does not mention this.

Found in 2 places.

GLM/skills/xlsx/env_setup/setup.md, line 300sudo ln -sf /opt/libreoffice*/program/soffice /usr/local/bin/soffice
GLM/skills/xlsx/env_setup/setup.md, line 310sudo ln -sf /Applications/LibreOffice.app/Contents/MacOS/soffice /usr/local/bin/soffice

Safer alternatives

Low-risk skills in the same category (data) that look related. Check that one does what you need.

Other copies in this repository

asgeirtj/system_prompts_leaks has 1 more folder with a skill named xlsx. This page shows the lowest-scoring copy.

Anthropic/claude-code/skills/xlsx 80/100 · 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=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/asgeirtj/system_prompts_leaks' "$d" && git -C "$d" checkout --quiet '2209631d6d3da737c22159ed03c5127734b187f3' -- 'GLM/skills/xlsx' && mkdir -p ~/.agents/skills && cp -R "$d"/'GLM/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
2026-11-14	`2209631`	65
2026-11-10	`fc0108f`	65