Excel files (.xlsx)
Reads, creates, edits, and analyzes Excel workbooks and templates.
Anthropic
What this skill does
Use for spreadsheet file creation, editing, and analysis.
Where, why and how to use it
Use when Excel files are the requested input or output. Preserve formulas and formatting, then reopen the saved workbook to inspect results.
The repository README identifies this implementation as source-available and not open source. Link to the official source; do not copy it into this product.
Source location
anthropics/skills:skills/xlsx/SKILL.md
Compatibility and setup
Skill reader may be portable; spreadsheet libraries vary by environment.
Workbook libraries and formula/render checks may be required.
Boundaries
Respect restricted source status and preserve originals; do not claim recalculation unless verified.
Source version
anthropics/skills main; unpinned. Reference checked 2026-10-14. Source verification does not mean this skill is installed, its connector is available or its service entitlement active.
Example instruction
Add a summary sheet to this workbook while preserving formulas and number formats.