topskills

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
Install without a terminal (Claude.ai)

xlsx is verified on Claude.ai, so you can install it from the browser — no command line. It then runs in Claude’s server-side sandbox, which has no shell and no access to your computer’s files: you upload what it should read and download what it produces.

  1. 1Turn on code execution. On claude.ai, open Settings → Capabilities and enable "Code execution and file creation". Skills that produce files need it, and it is off for some accounts by default.
  2. 2Download the skill folder. Follow the source link on the skill page to its repository and download the skill’s folder. Read the SKILL.md before you install it — it is plain text, and it is the instructions the agent will follow.
  3. 3Zip it and upload. Compress the folder into a .zip, then on claude.ai go to Customize → Skills and upload it. Skills you upload are private to your account.
  4. 4Ask for the work. Start a normal conversation and describe the job in your own words. The skill loads itself when your request matches what its description covers — you never invoke it by name.

Anthropic documents this flow in Use skills in Claude. See every Skill that installs this way.

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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Ranked #10 in Documents

Publish the ranking in your README. The badge reads the live score, so it updates when the ranking does.

xlsx — ranked #10 in Documents on Top Agent Skills
Markdown
[![xlsx — ranked #10 in Documents on Top Agent Skills](https://top-agent-skills.com/badge/xlsx.svg)](https://top-agent-skills.com/skill/xlsx)
HTML
<a href="https://top-agent-skills.com/skill/xlsx"><img src="https://top-agent-skills.com/badge/xlsx.svg" alt="xlsx — ranked #10 in Documents on Top Agent Skills"></a>

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.