Agent Skills Index

Directory / Anthropic Agent Skills / xlsx

xlsx

skill Documents & office files

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, .xltx, .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.
Description from the SKILL.md front matter.

Install

Add the marketplace (once, in Claude Code)
/plugin marketplace add anthropics/skills
Install the document-skills bundle that contains it
/plugin install document-skills@anthropic-agent-skills
Or with GitHub CLI v2.90+ (any supported agent)
gh skill install anthropics/skills xlsx

Commands follow each host's documentation (Claude Code, Claude.ai, Claude API docs). gh skill needs GitHub CLI 2.90 or later and is in public preview.

Catalog
Anthropic Agent Skills (anthropic-agent-skills)
Author
Anthropic
Source code
anthropics/skills
License
Proprietary. LICENSE.txt has complete terms
Repository stars
182,130 for anthropics/skills (the whole catalog repo)
Added to catalog
2025-12-01
Last change
2026-07-17
Installed via bundle
document-skills

What it contains

Similar in Documents & office files