This skill should be activated when the user asks to create, edit, read, or analyze Excel spreadsheet files (.xlsx, .xlsm, .csv, .tsv). Triggers for: building financial models, creating data tables, formatting spreadsheets, adding formulas, cleaning tabular data, converting between tabular formats. Also triggers when user mentions 'spreadsheet', 'Excel', 'workbook', or references an .xlsx file. Do NOT trigger when the primary deliverable is a document, presentation, or visualization.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# XLSX Spreadsheet Skill
Create and edit professional Excel spreadsheets using **openpyxl** for spreadsheet generation, **pandas** for data analysis, and **LibreOffice** for formula recalculation.
## Quick Reference
| Task | Go To |
|------|-------|
| Create from scratch | [Creating from Scratch](#creating-from-scratch) below |
| Edit existing XLSX | [editing.md](editing.md) |
| Read/analyze data | [Reading and Analyzing](#reading-and-analyzing) below |
| Financial models | [references/financial-modeling.md](${CLAUDE_PLUGIN_ROOT}/skills/xlsx/references/financial-modeling.md) |
| openpyxl API | [references/openpyxl-api.md](${CLAUDE_PLUGIN_ROOT}/skills/xlsx/references/openpyxl-api.md) |
## Setup
```bash
# Install dependencies (first time only)
pip install openpyxl pandas lxml defusedxml --break-system-packages
# Verify LibreOffice is available (required for formula recalculation)
which soffice || echo "LibreOffice not installed — install with: sudo apt install libreoffice"
```
…
The line at the top of this page pins the label git:20260406.f86f8b0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
GET https://markdownregistry.com/api/v1/artifacts/art_gnfwc53o3lyyhoij
GET https://markdownregistry.com/api/v1/resolve?ref=lukaskellerstein/claude-my-marketplace/xlsx
GET https://markdownregistry.com/api/v1/blob/723508e3036a79dca7ddb59c02a3e07a15c29f96eb3092265ae6cf0b4853162f
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
lukaskellerstein/claude-my-marketplace · _archive/paperclip-plugin/skills/infrastructure-planning/SKILL.md · Plan and document the required software, infrastructure, and logistics for a Paperclip company — domains, GitHub…
lukaskellerstein/claude-my-marketplace · _archive/paperclip-plugin/skills/work-planning/SKILL.md · Design the complete work hierarchy for a Paperclip company — Goals, Projects, and Tasks as a unified top-down planning…
lukaskellerstein/claude-my-marketplace · plugins/demo-video-plugin/skills/demo-app-prep/SKILL.md · Gets a project into a demo-worthy, deterministic state before recording — boots the app, seeds realistic data, bypasses…
lukaskellerstein/claude-my-marketplace · plugins/demo-video-plugin/skills/demo-assembly/SKILL.md · Assembles measured clips and narration into a finished demo video — reconciles real durations into a timeline, then…
lukaskellerstein/claude-my-marketplace · plugins/demo-video-plugin/skills/demo-capture/SKILL.md · Records demo video clips by driving a running app — one clip per storyboard section, with human-feeling pointer motion…
lukaskellerstein/claude-my-marketplace · plugins/demo-video-plugin/skills/demo-graphics/SKILL.md · Dresses the Final Cut Pro finish of a demo video with Motion templates — MotionVFX DesignStudio elements downloaded…
lukaskellerstein/claude-my-marketplace · plugins/demo-video-plugin/skills/demo-review/SKILL.md · Quality-checks a rendered demo video before it ships — extracts frames, grades each section against its…
lukaskellerstein/claude-my-marketplace · plugins/demo-video-plugin/skills/demo-scripting/SKILL.md · Turns a codebase into a demo narrative that has value — picks which capabilities earn screen time, structures them into…
lukaskellerstein/claude-my-marketplace · plugins/demo-video-plugin/skills/demo-video/SKILL.md · Orchestrates building a narrated demo video of a project — reads the codebase, writes a storyboard, prepares…
lukaskellerstein/claude-my-marketplace · plugins/demo-video-plugin/skills/demo-voiceover/SKILL.md · Generates demo narration with the ElevenLabs MCP server — one audio file per storyboard section, measured so the editor…
anthropics/skills · skills/xlsx/SKILL.md · Use this skill any time a spreadsheet file is the primary input or output. This means any task where the user wants to…
eigent-ai/eigent · resources/example-skills/xlsx/SKILL.md · Use this skill any time a spreadsheet file is the primary input or output. This means any task where the user wants to…
thinkinaixyz/deepchat · resources/skills/xlsx/SKILL.md · Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and…
davepoon/buildwithclaude · plugins/all-skills/skills/xlsx/SKILL.md · Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and…
ginlix-ai/langalpha · plugins/langalpha_deliverables/skills/xlsx/SKILL.md · Excel workbooks with live formulas: build or edit .xlsx models with openpyxl, recalculate with IronCalc or LibreOffice…
fcakyon/claude-codex-settings · plugins/anthropic-office-skills/skills/xlsx/SKILL.md · Use this skill any time a spreadsheet file is the primary input or output. This means any task where the user wants to…
