XLSX

94TrustedShips scripts

Spreadsheet file manipulation, data cleaning, and formula integration.

What it does

Installing XLSX grants your assistant the capability to read, modify, and generate professional-grade spreadsheet files directly. It moves beyond simple text summaries by allowing the assistant to handle structured data, apply complex calculations, and output files that adhere to standard formatting conventions.

The tool is designed for tasks that require persistence in spreadsheet software. It ensures that formulas remain dynamic, document metadata is included, and existing file structures are preserved during edits.

When it earns its place

Reach for it when…

Use this skill for projects involving the programmatic adjustment of tabular data, such as applying bulk formulas to a dataset, restructuring messy imports into clean sheets, or creating template workbooks with explicit input zones and legends.

Look elsewhere when…

This skill is not suitable for generating static reports in Word or PDF formats, nor is it the correct choice for building automated database pipelines or querying live web APIs, even if the eventual goal is a data table.

What to say to use it

You never invoke a skill directly — the assistant picks it up when your request matches what it covers. These are the kinds of things that do that.

can you add a formula to this spreadsheet to calculate the growth rate
please fix the headers and remove the empty rows in my data file
create a new excel sheet that summarizes this budget data
i need to merge these two files into a single master worksheet

Install it

Install for all your projects

Copy the skill directory into your personal skills folder. Claude picks it up on its own the next time your request matches what it does — there is nothing to enable.

bash

git clone --depth 1 --branch main https://github.com/anthropics/skills.git /tmp/skills
mkdir -p ~/.claude/skills
cp -r /tmp/skills/skills/xlsx ~/.claude/skills/xlsx

Install for one project only

Put it in the project's own skills folder instead, so it can be committed and shared with everyone working on that repository.

bash

cp -r /tmp/skills/skills/xlsx .claude/skills/xlsx

If a skill of the same name exists in both places, the personal one wins.

Installing on Claude.ai or through the API instead? The full guide covers every surface.

Pair it with an MCP server

XLSX changes how the work is done. These servers change what Claude can reach while doing it.

How skills and MCP servers differ →

94/100Trusted source

What checks out

Original source. Published in the repository of whoever wrote it, rather than copied out of it into a collection.
Adoption. The host repository has 169,871 stars. This counts the whole repository, not this skill alone.
Official author. Published by the organisation that owns the subject it covers.
Recently maintained. The repository was updated 3 days ago.
Spec-compliant. Frontmatter matches the Agent Skills specification, so it loads in any client implementing it.
Substantive instructions. The body carries enough detail to change how a task is actually performed.

What to know

Licensed. A licence is referenced but not in a standard form, so the exact terms have to be read in the repository.

This score describes where the skill came from — its origin, licence, upkeep and conformance to the spec. It is not a security audit, and it says nothing about whether the skill's instructions are correct. How it is calculated.

What it ships

Executable files: 12 Python files that can run on your machine
Files in total: 53
Context cost: about 2,150 tokens once activated (estimated)

Bundled scripts are normal — most skills from established authors include them. We have not run or reviewed this code; read it before installing if that matters to you.

Source

Published in: anthropics/skills
Path in repository: skills/xlsx/SKILL.md
Licence: Not stated in a standard form

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