1
Comprehensive .xlsx creation, editing and analysis with formulas, formatting, data analysis and charts — the canonical all-round Excel skill.
Best Excel Spreadsheet Skills for Claude Code (2026)
The best Claude Code skills for excel spreadsheet work — from official skill repos to community contributors. Hand-filtered from 11 genuinely relevant results across 30,000+ skills.
✅ 10 curated📊 11 relevant in catalog
At a glance
Our top pick for excel spreadsheet is xlsx-official: Comprehensive .xlsx creation, editing and analysis with formulas, formatting, data analysis and charts — the canonical all-round Excel skill. xlsx and spreadsheet round out the podium. This list includes skills maintained by K-Dense AI, OpenAI, OpenClaw. 8 of the 10 picks are rated high-relevance for this exact use case.
2
Purpose-built to open, read, edit, or fix .xlsx/.xlsm/.csv files whenever a spreadsheet is the primary input or output.
3
OpenAI's spreadsheet skill for creating, editing, and formatting .xlsx/.csv with formula-aware workflows and cached recalculation.
4
Read, write, edit and format .xlsx files: manage sheets, merge cells, find/replace, and export to CSV/JSON/Markdown.
5
Writes and debugs Excel/Sheets formulas, pivot tables, and array formulas with dialect translation and edge-case examples.
6
Microsoft Excel API integration with OAuth to read/write live workbooks, worksheets, ranges, tables and charts stored in OneDrive.
7
Methodology for building bulletproof financial models, dashboards and data systems across Excel, Google Sheets and LibreOffice.
8
Read and write Google Sheets — get content, update cells, append rows, fetch ranges — covering the cloud-spreadsheet side of the workflow.
9
Runs financial ratio analysis, DCF valuation and budget variance/forecasts — the analytical modeling layer on top of spreadsheets.
10
Office workflow covering spreadsheet automation alongside docs and slides with LibreOffice/Microsoft Office format support.
Frequently asked
What is the best excel spreadsheet skill for Claude Code?
xlsx-official (from sickn33/antigravity-awesome-skills) is our #1 pick. Comprehensive .xlsx creation, editing and analysis with formulas, formatting, data analysis and charts — the canonical all-round Excel skill. It ranked first out of 11 genuinely relevant skills we evaluated for excel spreadsheet.
Are there official excel spreadsheet skills from major companies?
Yes — this ranking includes skills maintained by K-Dense AI, OpenAI, OpenClaw. Official and corporate-maintained skills tend to be better documented and more actively updated than one-off community scripts.
How do I install a excel spreadsheet skill in Claude Code?
Open any skill on this list for full instructions. In most cases you copy the skill folder (with its SKILL.md) into your project's .claude/skills/ directory, or install it via the source repo's plugin marketplace. All 10 listed skills are open source and free.