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XLSX

XLSX is an agent skill (a SKILL.md file) from TokenRhythm/opensquilla. Read, inspect, edit, or create Microsoft Excel .xlsx workbooks, including structured data extraction, formula-aware cell edits, and workbook generation from rows. It works with Claude Code and has 7,084 GitHub stars across a repository of 4 listed skills.

github.com/TokenRhythm/opensquilla/src/opensquilla/skills/bundled/xlsx (opens in a new tab)

Data as of from the GitHub API; description from the skill's SKILL.md. Report an error

View on GitHub (opens in a new tab)

Add this skill

Claude

Claude Code loads skills from ~/.claude/skills/ (all projects) or .claude/skills/ (one project):

git clone --depth 1 https://github.com/TokenRhythm/opensquilla.git
cp -r opensquilla/src/opensquilla/skills/bundled/xlsx ~/.claude/skills/xlsx   # personal, or .claude/skills in a project

In the Claude apps, zip the xlsx folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

ChatGPT / Codex

Codex reads skills from .agents/skills/ in a repo or ~/.agents/skills/ for every project:

git clone --depth 1 https://github.com/TokenRhythm/opensquilla.git
cp -r opensquilla/src/opensquilla/skills/bundled/xlsx .agents/skills/xlsx   # repo; ~/.agents/skills for all projects

Standalone skills also load in the ChatGPT desktop app.

Cursor

Cursor loads skills from .cursor/skills/ (or ~/.cursor/skills/) and also reads .claude/skills/:

git clone --depth 1 https://github.com/TokenRhythm/opensquilla.git
cp -r opensquilla/src/opensquilla/skills/bundled/xlsx .cursor/skills/xlsx   # project; ~/.cursor/skills for all projects

Source (checked Oct 7, 2026): code.claude.com/docs/en/skills (opens in a new tab), support.claude.com/en/articles/12512180-using-skills-in-claude (opens in a new tab), learn.chatgpt.com/docs/build-skills (opens in a new tab), cursor.com/docs/context/skills (opens in a new tab)

What this skill does

Read, inspect, edit, or create Microsoft Excel .xlsx workbooks, including structured data extraction, formula-aware cell edits, and workbook generation from rows. Work with .xlsx workbooks. The format is OOXML SpreadsheetML — a zip container of XML parts. Treat each cell as a typed value: a number, a string, a datetime, or a formula. Mixing the four causes Excel to flag the workbook or compute incorrect totals.

More skills in TokenRhythm/opensquilla

4 skills are listed from this repository.

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FAQ

XLSX FAQ

Still curious? Email info@appsgit.com.

How do I install the XLSX skill?

Copy the xlsx folder (the one containing SKILL.md) into ~/.claude/skills/ for Claude Code, .agents/skills/ for Codex or .cursor/skills/ for Cursor. The agent picks it up automatically when a task matches its description.

Is the XLSX skill free?

Yes. The repository is open source under the Apache-2.0 license.

Is XLSX maintained?

The repository's most recent commit was on Oct 26, 2026. Its latest release is v0.5.7. appsgit only lists skills from repositories with a commit in the last six months.