Overview
xlsx is an open-source workflow skill for Claude Code and compatible agents, published by eigent-ai. Its author describes it as: “Use this skill any time a spreadsheet file is the primary input or output. This means any task where the user wants to: open, read, edit, or fix an existing .xlsx, .xlsm, .csv, or .tsv file (e.g., adding columns, comp…”. The project has 15k stars on GitHub and is available under the Apache-2.0 license. Add it to your setup with `git clone https://github.com/eigent-ai/eigent ~/.claude/skills/xlsx`.
What xlsx does
- Use a consistent, professional font (e.g., Arial, Times New Roman) for all deliverables unless otherwise instructed by the user
Best for
What’s inside
The SKILL.md for xlsx is organised into these sections:
- All Excel files
- Professional Font
- 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
Installation
Add xlsx to your agent with:
git clone https://github.com/eigent-ai/eigent ~/.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 eigent-ai/eigent, an established project with 15,032 GitHub stars
- Actively maintained — repository updated in the last 90 days
Author
Topics
Frequently asked questions
- What does xlsx do?
- Use this skill any time a spreadsheet file is the primary input or output. This means any task where the user wants to: open, read, edit, or fix an existing .xlsx, .xlsm, .csv, or .tsv file (e.g., adding columns, computing formulas, formatting, charting, cleaning messy data); create a new spreadsheet from scratch or from other data sources; or convert between tabular file formats. Trigger especially when the user references a spreadsheet file by name or path — even casually (like "the xlsx in my downloads") — and wants something done to it or produced from it. Also trigger for cleaning or restructuring messy tabular data files (malformed rows, misplaced headers, junk data) into proper spreadsheets. The deliverable must be a spreadsheet file. Do NOT trigger when the primary deliverable is a Word document, HTML report, standalone Python script, database pipeline, or Google Sheets API integration, even if tabular data is involved.
- How do I install xlsx?
- Run git clone https://github.com/eigent-ai/eigent ~/.claude/skills/xlsx in your agent, then reload your skills. Review the source at https://github.com/eigent-ai/eigent 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 eigent-ai/eigent, a repository that contains 7 catalogued skills in total. The repository's 15,032 GitHub stars apply to that whole collection, not to this skill on its own.