XLSX Skill
XLSX Skill is a Claude Skill for spreadsheets and data entry, published by anthropics.
Anthropic's official Claude Skill for opening, editing, and creating .xlsx, .xlsm, .csv, and .tsv spreadsheets with proper formula recalculation.
Is it any good?
Effectiveness · benchmark pending
We haven't benchmarked XLSX Skill yet, so its score is provisional — computed from safety, maintenance, and documentation only, with popularity given no weight. When we benchmark it, we measure whether it produces materially better output than a frontier model alone, and that result leads the score. How we measure.
About XLSX Skill
Description · AI-summarised from the anthropics README
The xlsx skill triggers whenever a spreadsheet is the primary input or output — adding columns, computing formulas, charting, cleaning messy tabular data, or converting between tabular formats. It uses openpyxl for formula-aware editing and pandas for analysis, with a mandatory recalc step to keep computed values correct.
Where it fits
Browse related skills
Install XLSX Skill
Install
Install via Claude Skill
claude skills add @anthropics/anthropic-xlsx-skillInstall with your AI
Zero install · paste into ChatGPT, Claude, Cursor…
Install the "XLSX Skill" skill into my project by following all instructions at https://skillsdirectory.co/s/anthropic-xlsx-skill
Your assistant reads /s/anthropic-xlsx-skill and follows it — fetching the files from the source, placing them, and confirming before it runs anything. No account needed. How this works.
Frequently asked
FAQ
What does XLSX Skill do?
Anthropic's official Claude Skill for opening, editing, and creating .xlsx, .xlsm, .csv, and .tsv spreadsheets with proper formula recalculation.
How do I install XLSX Skill?
XLSX Skill is a Claude Skill. Primary install path: claude skills add @anthropics/anthropic-xlsx-skill
What is the Skill Score for XLSX Skill?
XLSX Skill has a Skill Score of 7.7/10 (High Quality). It is currently a provisional score — XLSX Skill hasn't been benchmarked yet, so it weights safety 55/100 (40%), maintenance 92/100 (30%), and documentation 85/100 (30%). Popularity carries zero weight until effectiveness is measured. See methodology.
Is XLSX Skill free?
XLSX Skill is published under the Apache-2.0 license. See the vendor's source repository for any usage limits or paid tiers.
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Embed this score
For maintainers · always-current, links back
Put it in your README — it updates as the score changes.[](https://skillsdirectory.co/skills/anthropic-xlsx-skill)
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