Skill

Excel (XLSX) skill

The spreadsheet skill is one of four document skills in Anthropic's skills repository, covering creating, editing and cleaning .xlsx, .xlsm, .csv and .tsv files.

Source (opens in a new tab)

Checked 2026-10-31

Install

Claude Code
/plugin marketplace add anthropics/skills

Commands come from the project's own docs or registry entry. Check them against the source before you run them.

The spreadsheet skill is one of four document skills in Anthropic's skills repository, covering creating, editing and cleaning .xlsx, .xlsm, .csv and .tsv files. Its SKILL.md names openpyxl for formulas and formatting, pandas for bulk data and markitdown for a quick look at a sheet. It requires formulas rather than hardcoded results and a mandatory recalculation step with LibreOffice through recalc.py. The folder holds SKILL.md and scripts including recalc.py. The README gives /plugin marketplace add anthropics/skills as the Claude Code install route. The folder's LICENSE.txt is not an open source licence: use is governed by your agreement with Anthropic, or else Anthropic's standard terms, and users may not copy the materials outside the Services, make derivative works, distribute them or reverse engineer them. The README calls these skills source-available. The repository was last pushed on 28 October 2026. It suits analysts and finance users who want spreadsheets built or repaired by an agent. A limit is that LibreOffice implements fewer functions than Excel, and the SKILL.md warns that unsupported ones can fail recalculation. We have not run it ourselves for this note.

Mentioned here

  • PDF skill

    The PDF skill is one of four document skills in Anthropic's skills repository, covering PDF reading, merging, splitting, creation and form filling.

    • Skill
    • Official

    Anthropic

  • Word (DOCX) skill

    The Word document skill is one of four document skills in Anthropic's skills repository, covering creating, editing and reading .docx and .dotx files.

    • Skill
    • Official

    Anthropic

  • PowerPoint (PPTX) skill

    The presentation skill is one of four document skills in Anthropic's skills repository, covering creating, editing and reading .pptx and .potx files.

    • Skill
    • Official

    Anthropic

  • Skill Creator skill

    The Skill Creator skill is Anthropic's tool that drafts, tests and tunes other skills. What it does, install for five agents, its eval loop and its limits.

    • Skill
    • Official

    Anthropic

  • Claude Code

    Claude Code is Anthropic's coding agent for the terminal, VS Code, JetBrains, a desktop app and the web.

    • Terminal agent
    • MCP

    Subscription, 153,977 stars

Works with

Tried it with one of these? Vote below: works for me, or not.

Questions

How do I install Excel (XLSX) skill?

Run this command: /plugin marketplace add anthropics/skills. The install box on this page has the command for each agent it works with.

Is Excel (XLSX) skill free?

It is published under the Proprietary licence.

Who maintains Excel (XLSX) skill?

It is maintained by Anthropic, as the official add-on for its service. The code is at github.com/anthropics/skills/tree/main/skills/xlsx.

Reviews

Loading reviews…

Write a review

Your rating

Up to 1000 characters. Stars alone are enough.

Prompts that use it

All prompts

Similar

  • Superpowers

    Superpowers is a skills framework and software development method for coding agents, described by its maintainer as one that works.

    • Skill

    Jesse Vincent, 309,408 stars

  • UI UX Pro Max

    UI UX Pro Max is a skill from nextlevelbuilder that gives an agent design knowledge for building interfaces across platforms and frameworks.

    • Skill

    nextlevelbuilder, 148,422 stars

  • Caveman

    Caveman is a Claude Code skill and proxy that tries to cut token use by making the agent talk in short, blunt phrases.

    • Skill

    Julius Brussee, 116,327 stars

  • Taste Skill

    Taste Skill is an Agent Skill from Leonxlnx that aims to make a coding agent build professional company websites instead of a generic landing page.

    • Skill

    Leonxlnx, 113,896 stars

  • Impeccable

    Impeccable is a design skill from Paul Bakaus that gives a coding agent words for what you want to change.

    • Skill

    Paul Bakaus, 108,653 stars

  • Archify

    Archify is a skill from tt-a1i that has an agent produce an interactive visual as one self-contained HTML file.

    • Skill

    tt-a1i, 91,820 stars