# XLSX (agent skill)

> 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 7,087 GitHub stars across a repository of 4 listed skills.

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.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/TokenRhythm/opensquilla |
| Skill path | src/opensquilla/skills/bundled/xlsx/SKILL.md |
| Skill name | xlsx |
| GitHub stars | 7,087 |
| Installs on skills.sh | not listed |
| License | Apache-2.0 |
| Skills in repo | 4 |
| Plugin marketplace | no |
| Official | no |
| Works with | Claude Code |
| Category | Data & analysis |
| Last commit | Sep 30, 2026 |

## Add this skill

### Claude Code

```sh
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 skill folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

### ChatGPT / Codex

```sh
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
```

### Cursor

```sh
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
```

Sources (checked 2026-10-07): https://code.claude.com/docs/en/skills, https://support.claude.com/en/articles/12512180-using-skills-in-claude, https://learn.chatgpt.com/docs/build-skills, https://cursor.com/docs/context/skills

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Canonical page: https://appsgit.com/skills/tokenrhythm-xlsx
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