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XLSX

XLSX is an agent skill (a SKILL.md file) from ThinkInAIXYZ/deepchat. Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization. It works with Claude Code, Codex, Cursor, GitHub Copilot and OpenCode and has 6,371 GitHub stars across a repository of 4 listed skills.

github.com/ThinkInAIXYZ/deepchat/resources/skills/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/ThinkInAIXYZ/deepchat.git
cp -r deepchat/resources/skills/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/ThinkInAIXYZ/deepchat.git
cp -r deepchat/resources/skills/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/ThinkInAIXYZ/deepchat.git
cp -r deepchat/resources/skills/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

Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization. When Claude needs to work with spreadsheets (.xlsx, .xlsm, .csv, .tsv, etc) for: (1) Creating new spreadsheets with formulas and formatting, (2) Reading or analyzing data, (3) Modify existing spreadsheets while preserving formulas, (4) Data analysis and visualization in spreadsheets, or (5) Recalculating formulas A user may ask you to create, edit, or analyze the…

More skills in ThinkInAIXYZ/deepchat

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 v1.1.3. appsgit only lists skills from repositories with a commit in the last six months.