Overview
xlsx is an open-source data skill for Claude Code and compatible agents, published by ThinkInAIXYZ. Its author describes it as: “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) C…”. The project has 6.2k stars on GitHub and is available under the Apache-2.0 license. Add it to your setup with `git clone https://github.com/ThinkInAIXYZ/deepchat ~/.claude/skills/xlsx`.
What xlsx does
- Every Excel model MUST be delivered with ZERO formula errors (#REF!, #DIV/0!, #VALUE!, #N/A, #NAME?)
What’s inside
The SKILL.md for xlsx is organised into these sections:
- All Excel files
- Zero Formula Errors
- Preserve Existing Templates (when updating templates)
- Financial models
- Color Coding Standards
- Number Formatting Standards
- Formula Construction Rules
- Overview
- Important Requirements
- Reading and analyzing data
- Data analysis with pandas
- Excel File Workflows
Installation
Add xlsx to your agent with:
git clone https://github.com/ThinkInAIXYZ/deepchat ~/.claude/skills/xlsxReview a skill’s source before installing it — skills can instruct your agent to run commands. This command comes from the skill’s public repository, which is the source of truth for setup steps. New to skills? Read how to install Claude Code skills.
Supported agents
Neither the skill nor its repository names a specific agent. It uses the SKILL.md format, which several agents can load — check the repository for any agent-specific requirements.
License
xlsx is published under the Apache-2.0 license.
Strengths
- Clear Apache-2.0 license — safe to read and adapt within its terms
- Ships in ThinkInAIXYZ/deepchat, an established project with 6,228 GitHub stars
- Actively maintained — repository updated in the last 90 days
Author
Topics
Frequently asked questions
- What does xlsx do?
- 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
- How do I install xlsx?
- Run git clone https://github.com/ThinkInAIXYZ/deepchat ~/.claude/skills/xlsx in your agent, then reload your skills. Review the source at https://github.com/ThinkInAIXYZ/deepchat before installing.
- Is xlsx free to use?
- Yes. xlsx is free and open source under the Apache-2.0 license, so you can read, run, and adapt it within that license's terms.
- Where does xlsx come from?
- xlsx ships inside ThinkInAIXYZ/deepchat, a repository that contains 25 catalogued skills in total. The repository's 6,228 GitHub stars apply to that whole collection, not to this skill on its own.
