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xlsx

Excel spreadsheets with real formulas, charts, and formatting — not flat CSV exports.

Score 0(?)OfficialAll surfacesby AnthropicSource
Verified for:

Install

$ npx skills add github.com/anthropics/skills --skill xlsx

Best for

Financial models, structured reports, anything that needs formulas.

About this skill

Create and analyze Excel spreadsheets with formulas, formatting, and charts.

ExcelFormulasCharts

Score breakdown

Score breakdown

rubric 1.0
Install count
0/20
Provenance
15/15
GitHub stars
0/15
Recency
6/10
Compatibility
2/10
Documentation depth
6.5/10
Install ergonomics
10/10
License
5/5
Verification freshness
3/5

Composite 0–100 score derived from 9 verifiable signals. See the rubric →

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Skill FAQ

About xlsx

What is the xlsx skill?

Create and analyze Excel spreadsheets with formulas, formatting, and charts.

Which agents does xlsx work with?

Claude Code, Claude.ai (web app), Claude API.

How do I install xlsx?

Run `npx skills add github.com/anthropics/skills --skill xlsx` for Claude Code. See the install panel for per-agent commands.

Is xlsx free to use?

Yes — xlsx is open source (MIT).

Who maintains xlsx?

xlsx is published by Anthropic and was last updated on 2026-04-20.

What is xlsx best for?

Financial models, structured reports, anything that needs formulas.