XLSX

by anthropics

XLSX is a Data skill for Claude Code, published by anthropics in skills.

168.6K stars20.1K forkson anthropics/skillsAdded 2026/08/13Repository updated 2026/08/07

View source on GitHub Download repo ZIP

agent-skills

Install in seconds

Install XLSX

Copy XLSX into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/anthropics/skills/tree/main/skills/xlsx ~/.claude/skills/xlsx

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/anthropics/skills.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: skills/xlsx/SKILL.md in anthropics/skills
Installs to: ~/.claude/skills/xlsx
Collection: One of 18 skills cataloged from this repository
Category: Data — 668 skills

What XLSX does

XLSX creates, edits, and analyzes spreadsheet files such as .xlsx, .xlsm, .csv, and .tsv. Use it when a spreadsheet is the primary input or output, including cleaning messy tabular data, adding formulas, formatting, and converting between formats.

XLSX is cataloged under Data on DirSkills. XLSX comes from a repository tagged agent-skills.

Documentation

README

Excerpt

XLSX creation, editing, and analysis

Task	Approach
Create or edit with formulas/formatting	`openpyxl` — see gotchas below
Bulk data in or out	`pandas` (`read_excel`, `to_excel`)
Quick look at a sheet	`markitdown file.xlsx` — `## SheetName` per sheet; reads `.xlsm` too. No cell coordinates, so don't plan edits from it
Read a model (formulas and values)	two `load_workbook` passes — see gotchas

openpyxl, pandas, and markitdown are preinstalled — do not run pip install first; write the script and import directly. Only if an import fails (or the markitdown command is missing): pip install the missing package.

Script paths below are relative to this skill's directory.

Requirements for every output

This is the opening of the README. Read the full README on GitHub.

Frequently asked about XLSX

What else does anthropics publish alongside XLSX?
XLSX is one of 18 skills that DirSkills catalogs from anthropics/skills, the repository it ships in. Its siblings there include Algorithmic Art, Brand Guidelines and Canvas Design. Each one is a separate skill with its own page in this directory, installs the same way XLSX does, and is maintained by anthropics in that same repository. The rest of the collection is listed on the anthropics/skills page.
How does XLSX compare to other Data skills?
XLSX ranks #6 by stars among the 668 Data skills in this catalog. The most-starred ones next to it are Benchmark Methodology, Jupyter Notebook and Solana. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of XLSX against them. Open each page to compare what they document and how they install.