xlsx skill (Anthropic)

Spreadsheets with formulas, formatting and charts

★ Stars182k182,136 on GitHub

Last commit3 months ago17 Jul 2026

LicenceProprietary (source-available, Anthropic)Per the project

From GitHub, fetched 19 Oct 2026. Stars are for the whole anthropics/skills repository; the last-update date is for this skill's folder.

Anthropic's Excel skill for building and analysing .xlsx workbooks while keeping formulas intact. Source-available, not open source.

At a glance

Sources: github.com/anthropics/skills/tree/main/skills/xlsx, checked 19 Oct 2026. “Runs as” is from this listing. Blank means we haven't found it in official docs yet, not that it's unsupported.

Status	Source available
Licence	Proprietary (source-available, Anthropic)
Platforms	Skill
Category	Document and writing skills
Website	github.com
Source	GitHub

Make xlsx skill (Anthropic) the Top Pick on the Document and writing skills page: the first card people see there, labelled as sponsored. £39/month.

Document and writing skills

Create and edit Word documents, including tracked changes

Document and writing skills

Write status updates, newsletters and incident notes in house style

Document and writing skills

Read, merge, split, fill and create PDF files

Document and writing skills

Build and edit PowerPoint decks